Product Description
Product Description
KINGER Earth Auger has 26 models which are suitable for all types of excavators, skid steer loader, backhoe loader, crane, telescopic handler etc. It is widely applied to telecommunication municipal works, high-speed railway,construction and forestry project.
Suitable Equipment
Product Parameters
| Model | YDH mini | YDH1200 | YDH1500 | YDH2000 | YDH2500 | YDH4000 | YDH4500 | YDH5000 |
| Applicable(T) | 0.8-2 | 1-4 | 1-2 | 1.5-3 | 1.5-3 | 2-4 | 3-6 | 3-6 |
| Torque Range(Nm) | 300-1200 | 330-1320 | 540-1600 | 656-2300 | 860-2500 | 1300-3800 | 1600-4600 | 1600-4900 |
| Oil pressure Range(Lpm) | 60-200 | 60-220 | 60-200 | 60-200 | 60-200 | 60-200 | 60-210 | 60-210 |
| Output Shaft(mm) | 65Rd | 65Rd | 65Rd | 65Rd | 65Rd | 65Rd | 65Rd | 65Rd |
| Unit Weight(Kg) | 38 | 80 | 49 | 50 | 50 | 52 | 87 | 88 |
Our advantage
– More than 13 years manufacture experience
–18-month warranty for motor and gearbox.
– Special heat treatment for gear
– Most complete model ranges for 1-50 tons excavator
– Well performance
– Quick after-sale service
– Fast delivery
– Focus on quality all the time
-High efficiency
How to match a suitable earth auger?
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1st step: You had an excavator& backhoe loader (its weight )or skid steer (its oil flow and pressure ).
2 ed step: the diameter and depth of the hole you want to dig for.
3 rd Step: the soil condition for working, soft, sandy.or hard
Then we will suggest you the most suitable model for your projects.
Standard length: 1m, 1.2m, 1.5m, 2m
Auger thickness: 8mm, 10mm, 12mm, 16mm
Diameter: 100mm to 2000mm
The size can be customized.
Packaging & Shipping
Package: Plywood box
Delivery: Seaway, landway, airway, DDP shipment service.
Exhibitions for brand promotion
Our products showed on the Bauma Exhibition for many times and get loved with its high quality and exquisite appearance.
Why choose us
We have our own technology team which can provide superb pre-sale and after-sale service which can satisfy customers’ special request. Our product adopts high and new technology, applied with best material and supported by various advanced inspection and testing equipment to make sure the quality stable and performance more excellent.
Certifications
Passed CE, ISO9001:2015 quality system, over 30 patent rights, complete production process, control and quality inspection.
CUSTOMER FEEDBACK
________\\\ ________
OUR COMPANY
________\\\ ________
HangZhou Xihu (West Lake) Dis.heng Machinery Co., Ltd. is established in 2571, which is a professional enterprise devoted to R&D,manufacture and sell Mini excavator, Earth auger, Log splitter, Saw head, Hedge trimmer, Stump Remover, Tree Shear, Chain Trencher,Concrete Mixer Bucket,and other construction, forestry and agricultural machinery and attachments.
Our company has passed ISO9001:2015 and CE certification. We are national high-tech and professional, refined, unique and innovative enterprise. Our company owns plenty of independent intellectual property rights. So far, we have obtained more than 30 patents. That makes Xihu (West Lake) Dis.heng to be a leading position in the construction, forestry and agricultural machinery industry.
With our more than 12-year manufacturing, sales and after-sales service experience, we have created our own brand “KINGER“. Our product has been exported to USA,UK,New Zealand,Ukraine,Germany, Denmark, Russia, recognized by customers all over the world.
1. Material: We use the special raw materials and plantary gear, which has high efficiency and long service life.
2. Process: We have advanced production technology and quality testing. And passed the ISO90001:2015 quality system certification.
3. Delivery: We usually take about 7-15 days depending on the products you order after receive your payment.
4. Price: High quality with competitive price. With us your money and your business is safe. We can offer 7-days refund in case of bad quality, and Alibaba trade assurance payment for safety.
5. After-sales service: Excellent technical support, complete service system. 12 months for motor, 18 months for gearbox.
FAQ
Q: Are you trading company or manufacturer ?
A: Yes,we are manufacturer.
Q: How long is your delivery time?
A: It is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, but it is not free.
Q: If I need different measurements or weight, could you offer OEM service?
A: Sure, we can provide OEM service, also we can make new CZPT for your product, attaching your name brand.
Q:If buy your product,can the quality and after-sales service be guaranteed?
A:Yes,you can rest assured that we have our own factory and technical consultants,and you will have a pleasant shopping experience in our company.
| After-sales Service: | Provided |
|---|---|
| Warranty: | 18 Months |
| Certification: | CE, ISO 9001:2015 |
| Condition: | New |
| Drill Hole Diameter: | 100mm 200mm 300mm 400mm 500mm 600mm 700mm 800mm |
| Drill Hole Depth: | <10m |
| Customization: |
Available
| Customized Request |
|---|
What Are Screw Shaft Threads?
A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
Coefficient of friction between the mating surfaces of a nut and a screw shaft
There are two types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The two types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.
Helix angle
In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are two types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in two stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to six times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
Thread angle
The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are two different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.
Material
Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each one is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
Self-locking features
Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the two materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.
editor by CX 2023-11-21
China OEM Good Service Heat Resistant Fire System Auger Industrial Trough Screw Conveyor screw conveyor shaft seals
Product Description
Product Description
Introduction
Trough Screw Conveyor is a continuous conveying equipment which used to transport powder, granular and dry bulk materials. It consists of bearing seat, screw blade, screw shaft, hang bearing, conveyor casing and driven device,etc.Single or combination of multiple screw equipment can be used to integrate with each other to meet particular on-site requirements. It has trough type tube with multiple inlets and outlets, which also has inclination angle of maximum 20°. The rotation of the blade initiated by the motor, then material transferred along the spiral to the outlets.
Get a price at once!
Advantages and Features
1. With cover, whole sealing structure, without pollution to the environment.
2. Conveyor length can be customized according to your need.
3. Simple structure, use little material to manufacture, save cost for you.
4. Conveyor angle can be 0-30 degree. Save space on the site.
5. Screw pitch can be customized according to require of different material.
6. According to real working conditions, trough screw conveyor machine can be multiple inlets and outlets.
7. Adopts hanging bearing to connect screw blades which is longer than 3-4m.
8. Adopts the method of spot welding to weld spiral blade on the screw shaft.
Get a price at once!
Detailed Photos
Product Parameters
Technical Parameter
| LS type Screw Conveyor | |||||||||||
| Type | LS160 | LS200 | LS250 | LS315 | LS400 | LS500 | LS630 | LS800 | LS1000 | LS1250 | |
| Diameter (mm) |
160 | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 | |
| Screw Pitch (mm) |
160 | 200 | 250 | 315 | 355 | 400 | 450 | 500 | 560 | 630 | |
| Data | n | 112 | 100 | 90 | 80 | 71 | 63 | 50 | 40 | 25 | 25 |
| Q | 8 | 14 | 24 | 34 | 64 | 100 | 145 | 208 | 388 | 388 | |
| n | 90 | 80 | 71 | 63 | 56 | 50 | 40 | 32 | 20 | 20 | |
| Q | 7 | 12 | 20 | 26 | 52 | 80 | 116 | 165 | 320 | 320 | |
| n | 71 | 63 | 56 | 50 | 45 | 40 | 32 | 25 | 16 | 16 | |
| Q | 6 | 10 | 16 | 21 | 41 | 64 | 94 | 130 | 260 | 260 | |
| n | 50 | 50 | 45 | 40 | 36 | 32 | 25 | 20 | 13 | 13 | |
| Q | 4 | 7 | 13 | 16 | 34 | 52 | 80 | 110 | 150 | 200 | |
| n-Rotation Speed (r/min), Allowable Deviation < 10% Q-Capacity (m3/h) Filling Factor = 0.33 |
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Note: All the parameters are for reference only, we can design and manufacture as per your requirements.
Get a price at once!
Packaging & Shipping
1.We can deliver Trommel vibrating screen timely .
2.Standard sea shipping packaging.
Company Profile
Customer Visit
Certifications
| Warranty: | 1 Year |
|---|---|
| Structure: | Conveyor System |
| Material: | Carbon Steel |
| Material Feature: | Oil Resistant, Heat Resistant, Fire Resistant |
| Application: | Chemical Industry, Grain Transport, Mining Transport, Power Plant |
| Condition: | New |
| Samples: |
US$ 800/Set
1 Set(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Lead Screws and Clamp Style Collars
If you have a lead screw, you’re probably interested in learning about the Acme thread on this type of shaft. You might also be interested in finding out about the Clamp style collars and Ball screw nut. But before you buy a new screw, make sure you understand what the terminology means. Here are some examples of screw shafts:
Acme thread
The standard ACME thread on a screw shaft is made of a metal that is resistant to corrosion and wear. It is used in a variety of applications. An Acme thread is available in a variety of sizes and styles. General purpose Acme threads are not designed to handle external radial loads and are supported by a shaft bearing and linear guide. Their design is intended to minimize the risk of flank wedging, which can cause friction forces and wear. The Centralizing Acme thread standard caters to applications without radial support and allows the thread to come into contact before its flanks are exposed to radial loads.
The ACME thread was first developed in 1894 for machine tools. While the acme lead screw is still the most popular screw in the US, European machines use the Trapezoidal Thread (Metric Acme). The acme thread is a stronger and more resilient alternative to square threads. It is also easier to cut than square threads and can be cut by using a single-point threading die.
Similarly to the internal threads, the metric versions of Acme are similar to their American counterparts. The only difference is that the metric threads are generally wider and are used more frequently in industrial settings. However, the metric-based screw threads are more common than their American counterparts worldwide. In addition, the Acme thread on screw shafts is used most often on external gears. But there is still a small minority of screw shafts that are made with a metric thread.
ACME screws provide a variety of advantages to users, including self-lubrication and reduced wear and tear. They are also ideal for vertical applications, where a reduced frictional force is required. In addition, ACME screws are highly resistant to back-drive and minimize the risk of backlash. Furthermore, they can be easily checked with readily available thread gauges. So, if you’re looking for a quality ACME screw for your next industrial project, look no further than ACME.
Lead screw coatings
The properties of lead screw materials affect their efficiency. These materials have high anti-corrosion, thermal resistance, and self-lubrication properties, which eliminates the need for lubrication. These coating materials include polytetrafluoroethylene (PFE), polyether ether ketone (PEK), and Vespel. Other desirable properties include high tensile strength, corrosion resistance, and rigidity.
The most common materials for lead screws are carbon steel, stainless steel, and aluminum. Lead screw coatings can be PTFE-based to withstand harsh environments and remove oil and grease. In addition to preventing corrosion, lead screw coatings improve the life of polymer parts. Lead screw assembly manufacturers offer a variety of customization options for their lead screw, including custom-molded nuts, thread forms, and nut bodies.
Lead screws are typically measured in rpm, or revolutions per minute. The PV curve represents the inverse relationship between contact surface pressure and sliding velocity. This value is affected by the material used in the construction of the screw, lubrication conditions, and end fixity. The critical speed of lead screws is determined by their length and minor diameter. End fixity refers to the support for the screw and affects its rigidity and critical speed.
The primary purpose of lead screws is to enable smooth movement. To achieve this, lead screws are usually preloaded with axial load, enabling consistent contact between a screw’s filets and nuts. Lead screws are often used in linear motion control systems and feature a large area of sliding contact between male and female threads. Lead screws can be manually operated or mortised and are available in a variety of sizes and materials. The materials used for lead screws include stainless steel and bronze, which are often protected by a PTFE type coating.
These screws are made of various materials, including stainless steel, bronze, and various plastics. They are also made to meet specific requirements for environmental conditions. In addition to lead screws, they can be made of stainless steel, aluminum, and carbon steel. Surface coatings can improve the screw’s corrosion resistance, while making it more wear resistant in tough environments. A screw that is coated with PTFE will maintain its anti-corrosion properties even in tough environments.
Clamp style collars
The screw shaft clamp style collar is a basic machine component, which is attached to the shaft via multiple screws. These collars act as mechanical stops, load bearing faces, or load transfer points. Their simple design makes them easy to install. This article will discuss the pros and cons of this style of collar. Let’s look at what you need to know before choosing a screw shaft clamp style collar. Here are some things to keep in mind.
Clamp-style shaft collars are a versatile mounting option for shafts. They have a recessed screw that fully engages the thread for secure locking. Screw shaft clamp collars come in different styles and can be used in both drive and power transmission applications. Listed below are the main differences between these two styles of collars. They are compatible with all types of shafts and are able to handle axial loads of up to 5500 pounds.
Clamp-style shaft collars are designed to prevent the screw from accidentally damaging the shaft when tightened. They can be tightened with a set screw to counteract the initial clamping force and prevent the shaft from coming loose. However, when tightening the screw, you should use a torque wrench. Using a set screw to tighten a screw shaft collar can cause it to warp and reduce the surface area that contacts the shaft.
Another key advantage to Clamp-style shaft collars is that they are easy to install. Clamp-style collars are available in one-piece and two-piece designs. These collars lock around the shaft and are easy to remove and install. They are ideal for virtually any shaft and can be installed without removing any components. This type of collar is also recommended for those who work on machines with sensitive components. However, be aware that the higher the OD, the more difficult it is to install and remove the collar.
Screw shaft clamp style collars are usually one-piece. A two-piece collar is easier to install than a one-piece one. The two-piece collars provide a more effective clamping force, as they use the full seating torque. Two-piece collars have the added benefit of being easy to install because they require no tools to install. You can disassemble one-piece collars before installing a two-piece collar.
Ball screw nut
The proper installation of a ball screw nut requires that the nut be installed on the center of the screw shaft. The return tubes of the ball nut must be oriented upward so that the ball nut will not overtravel. The adjusting nut must be tightened against a spacer or spring washer, then the nut is placed on the screw shaft. The nut should be rotated several times in both directions to ensure that it is centered.
Ball screw nuts are typically manufactured with a wide range of preloads. Large preloads are used to increase the rigidity of a ball screw assembly and prevent backlash, the lost motion caused by a clearance between the ball and nut. Using a large amount of preload can lead to excessive heat generation. The most common preload for ball screw nuts is 1 to 3%. This is usually more than enough to prevent backlash, but a higher preload will increase torque requirements.
The diameter of a ball screw is measured from its center, called the ball circle diameter. This diameter represents the distance a ball will travel during one rotation of the screw shaft. A smaller diameter means that there are fewer balls to carry the load. Larger leads mean longer travels per revolution and higher speeds. However, this type of screw cannot carry a greater load capacity. Increasing the length of the ball nut is not practical, due to manufacturing constraints.
The most important component of a ball screw is a ball bearing. This prevents excessive friction between the ball and the nut, which is common in lead-screw and nut combinations. Some ball screws feature preloaded balls, which avoid “wiggle” between the nut and the ball. This is particularly desirable in applications with rapidly changing loads. When this is not possible, the ball screw will experience significant backlash.
A ball screw nut can be either single or multiple circuits. Single or multiple-circuit ball nuts can be configured with one or two independent closed paths. Multi-circuit ball nuts have two or more circuits, making them more suitable for heavier loads. Depending on the application, a ball screw nut can be used for small clearance assemblies and compact sizes. In some cases, end caps and deflectors may be used to feed the balls back to their original position.
editor by CX 2023-11-13
China Feed Screw Conveyor Auger Spiral Feeding Shaft screw conveyor end shaft seal
Condition: New
Material: Food, Agriculture, Medical..
Weight (KG): 1
Spare Parts Type: Feed Screw
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Warranty: 1 Year
Key Selling Points: Long Service Life
Applicable Industries: Hotels, Garment Shops, Building Material Shops, Manufacturing Plant, Machinery Repair Shops, JIAFEIDA CZPT Pto Shafts Harvester Tractor Spare Parts Food & Beverage Factory, Farms, Restaurant, Home Use, Retail, Food Shop, Construction works , Heavy Duty Tipper Truck double differential axle assembly rear axle Energy & Mining, Food & Beverage Shops, Advertising Company
Showroom Location: None
Product name: Feeding Screw
Application: Metering, Conveyor Industry
MOQ: 1 Piece
Screw type: Single
Screw Diameter: Dia.12-250mm
Certificate: ISO9001
Delivery: 4 Weeks
Marketing Type: Ordinary Product
Packaging Details: Sea Worthy Plywood Cases
Port: HangZhou / ZheJiang
Company Overview HangZhou CZPT Industry and Trade Co.,LTD. committed to provide system solutions for all kinds of Screws, Shaft, Barrels Product Overview Machining Control FAQ
| Q1: Warranty Period? | ||||||||
| A1: 1 Year | ||||||||
| Q2: Delivery Time? | ||||||||
| A2: 4-8 Weeks Per Ordering Details | ||||||||
| Q3: MOQ? | ||||||||
| A3: 1 Piece acceptable | ||||||||
| Q4: Can do by customized size? | ||||||||
| A4: Yes, high precision spindle bearing 7008CTYNSULP4 7008 angular contact ball bearing can do | ||||||||
What Are Screw Shaft Threads?
A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
Coefficient of friction between the mating surfaces of a nut and a screw shaft
There are two types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The two types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.
Helix angle
In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are two types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in two stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to six times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
Thread angle
The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are two different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.
Material
Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each one is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
Self-locking features
Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the two materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.
editor by czh 2023-07-03
China Food Grade Screw Auger Conveyor Stainless Steelauger Shaft in Pakistan screw shaft sizes
Product Description
Product Description
The screw conveyor consists of machine head, inlet, conveying section, screw and tail.Various external housing of the equipment is sealed with rubber pads to ensure sealing performance of the equipment.
We offer best machines and best quality. If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us.
Features of Screw Auger Conveyor
1.Large carrying capacity, safe and reliable.
2.Cycloid pinwheel do slow transmission, large transmission torque.
3.Strong adaptability, convenient installation and repair, long service life, and can be used for conveying a variety of powdery, granular and scrap materials. Levels and small angle(0°~20°).
4.Screw Conveyor is in small size, low noise, flexible arrangement of inlet and outlet position.
5.Optional material blocking preventing alarm, speed alarm.
Advantages Of Screw Auger Conveyor
1. Efficient delivery : small diameter , high rotating speed, large transmission capacity, variable pitch of spiral body, and small resistance of intermediate bearing make loading material smoothly, quickly and evenly.
2. Random arrangement : conveyor has good integral rigidity and can transport the products flatly or steeply inclined, it can be connected with its corollary equipments directly , and can be set up and dismantled easily with small floor space.
3. Good lubrication : low oil lubricating sliding tile, multilayer labyrinth oil seal design and integral lubricating system composed of of oil pump, distributor and pipeline are convenient and can completely lubricate all the running parts.
4. Reliable sealing : the dust cover of reducer is reliable for preventing leakage which can protect reducer and create good working condition. Improved peephole can prevent water seepage and material leakage.
5. Diverse connection : feed inlet and outlet can be connected not only with universal ball, bag,flange etc but also butterfly valve and gate valve.
6. Innovative design: special reducer designed and produced with introduced technology not only has the advantages of a small size, a big bearing torque ,low noise, no oil leakage etc, but also has the stable quality , reliable performance and long life.
Specifications Of Screw Auger Conveyor
| Type | Diameter of blade (mm) |
Normal screw pitch (mm) |
Referenced capacity (t/h) |
Turning speed (rpm) |
Applicable scope |
| TLSS16 | 160 | 160 | 3-5 | 65-85 | Powder material and granular material conveying. It can be widely used conveying raw materials, seimi finished grains, feed pellets etc., for CZPT warehouse, port, wharf etc. |
| TLSS20 | 200 | 200 | 5-8 | 65-85 | |
| TLSS25 | 250 | 220-250 | 8-15 | 65-85 | |
| TLSS32 | 320 | 280-320 | 15-30 | 65-85 | |
| TLSS40 | 400 | 350-400 | 30-50 | 65-85 | |
| TLSS50 | 500 | 400-500 | 50-80 | 65-85 | |
| TLSS63 | 630 | 500-630 | 80-100 | 50-75 | |
| TLSS80 | 800 | 630-800 | 100-150 | 50-75 | |
| TLSS100 | 1000 | 800-1000 | 150-200 | 50-75 | |
| TLSS120 | 1200 | 1000-1200 | 200-300 | 50-75 |
Packing Delivery
First, the brown rice is fed to rice polisher through screw head. the surface of the rice CZPT is polished by friction under a certain pressure and temperature. Through the polishing treatment, not only the floating surface of the rice CZPT can be cleared, but also the starch is pregelatinized and gelatinized on the surface of the rice starch, and the starch gelatinization makes up for cracks, thereby obtaining the smooth appearance, improving the storage life of the rice, therefore polished rice is very necessary.
Our Service
[Consulting Service] Our consultant provides you with pre-sales expertise consulting services, system evaluation, providing the best engineering solution
[Engineering Service] Set up special project team of technical, installation and sales for you. to design, install and commissioning a complete set of equipments, whole process tracking service.
[Training Service] Our experts in technology and management provide you long term production, operation, management, maintenance and other professional skills training, to help you train operation, technology, management personnel.
[Spare Part Service] We provides high-quality and reliable original accessories. And the service centers also keep store of a certain number of common accessories to meet the demand of rapid supply.
[Site service] Our service engineer goes deep into your site to solve practical problems. Conduct on-site training on the use of products and seek for improvement of a new way of thinking and method to reduce cost and increase efficiency.
FAQ
1. What is the delivery time of this machine if we book order right now?
We will deliver your order within 30-60days depend on different of machines.
2. How do you pack this machine for exporting?
We will provide packing which is suitable for the agreed means of transportation and for the foreseeable conditions of storage at the destination.
3. How can we make inspection before delivery?
We welcome you send your inspection manager come to our factory for inspection or you can nominate international the third part inspection company.
4. What is the warranty for your machine?
If any defect or non-conformity arising from faulty design, materials, we shall eliminate defects or replace machine.
5. What is the installation requirement of this machine?
The foundation of the machine should be with sufficient strength to support the weight of the machine.
There should be enough space around the machine for maintenance and inspection.
|
US $2,000-2,300 / Piece | |
1 Piece (Min. Order) |
###
| Type: | Rice Mill |
|---|---|
| Application: | All |
| Appearance: | Vertical |
| Condition: | New |
| Customized: | Customized |
| Transport Package: | Wooden Box |
###
| Customization: |
Available
|
|---|
###
| Type | Diameter of blade (mm) |
Normal screw pitch (mm) |
Referenced capacity (t/h) |
Turning speed (rpm) |
Applicable scope |
| TLSS16 | 160 | 160 | 3-5 | 65-85 | Powder material and granular material conveying. It can be widely used conveying raw materials, seimi finished grains, feed pellets etc., for grain warehouse, port, wharf etc. |
| TLSS20 | 200 | 200 | 5-8 | 65-85 | |
| TLSS25 | 250 | 220-250 | 8-15 | 65-85 | |
| TLSS32 | 320 | 280-320 | 15-30 | 65-85 | |
| TLSS40 | 400 | 350-400 | 30-50 | 65-85 | |
| TLSS50 | 500 | 400-500 | 50-80 | 65-85 | |
| TLSS63 | 630 | 500-630 | 80-100 | 50-75 | |
| TLSS80 | 800 | 630-800 | 100-150 | 50-75 | |
| TLSS100 | 1000 | 800-1000 | 150-200 | 50-75 | |
| TLSS120 | 1200 | 1000-1200 | 200-300 | 50-75 |
|
US $2,000-2,300 / Piece | |
1 Piece (Min. Order) |
###
| Type: | Rice Mill |
|---|---|
| Application: | All |
| Appearance: | Vertical |
| Condition: | New |
| Customized: | Customized |
| Transport Package: | Wooden Box |
###
| Customization: |
Available
|
|---|
###
| Type | Diameter of blade (mm) |
Normal screw pitch (mm) |
Referenced capacity (t/h) |
Turning speed (rpm) |
Applicable scope |
| TLSS16 | 160 | 160 | 3-5 | 65-85 | Powder material and granular material conveying. It can be widely used conveying raw materials, seimi finished grains, feed pellets etc., for grain warehouse, port, wharf etc. |
| TLSS20 | 200 | 200 | 5-8 | 65-85 | |
| TLSS25 | 250 | 220-250 | 8-15 | 65-85 | |
| TLSS32 | 320 | 280-320 | 15-30 | 65-85 | |
| TLSS40 | 400 | 350-400 | 30-50 | 65-85 | |
| TLSS50 | 500 | 400-500 | 50-80 | 65-85 | |
| TLSS63 | 630 | 500-630 | 80-100 | 50-75 | |
| TLSS80 | 800 | 630-800 | 100-150 | 50-75 | |
| TLSS100 | 1000 | 800-1000 | 150-200 | 50-75 | |
| TLSS120 | 1200 | 1000-1200 | 200-300 | 50-75 |
Lead Screws and Clamp Style Collars
If you have a lead screw, you’re probably interested in learning about the Acme thread on this type of shaft. You might also be interested in finding out about the Clamp style collars and Ball screw nut. But before you buy a new screw, make sure you understand what the terminology means. Here are some examples of screw shafts:
Acme thread
The standard ACME thread on a screw shaft is made of a metal that is resistant to corrosion and wear. It is used in a variety of applications. An Acme thread is available in a variety of sizes and styles. General purpose Acme threads are not designed to handle external radial loads and are supported by a shaft bearing and linear guide. Their design is intended to minimize the risk of flank wedging, which can cause friction forces and wear. The Centralizing Acme thread standard caters to applications without radial support and allows the thread to come into contact before its flanks are exposed to radial loads.
The ACME thread was first developed in 1894 for machine tools. While the acme lead screw is still the most popular screw in the US, European machines use the Trapezoidal Thread (Metric Acme). The acme thread is a stronger and more resilient alternative to square threads. It is also easier to cut than square threads and can be cut by using a single-point threading die.
Similarly to the internal threads, the metric versions of Acme are similar to their American counterparts. The only difference is that the metric threads are generally wider and are used more frequently in industrial settings. However, the metric-based screw threads are more common than their American counterparts worldwide. In addition, the Acme thread on screw shafts is used most often on external gears. But there is still a small minority of screw shafts that are made with a metric thread.
ACME screws provide a variety of advantages to users, including self-lubrication and reduced wear and tear. They are also ideal for vertical applications, where a reduced frictional force is required. In addition, ACME screws are highly resistant to back-drive and minimize the risk of backlash. Furthermore, they can be easily checked with readily available thread gauges. So, if you’re looking for a quality ACME screw for your next industrial project, look no further than ACME.
Lead screw coatings
The properties of lead screw materials affect their efficiency. These materials have high anti-corrosion, thermal resistance, and self-lubrication properties, which eliminates the need for lubrication. These coating materials include polytetrafluoroethylene (PFE), polyether ether ketone (PEK), and Vespel. Other desirable properties include high tensile strength, corrosion resistance, and rigidity.
The most common materials for lead screws are carbon steel, stainless steel, and aluminum. Lead screw coatings can be PTFE-based to withstand harsh environments and remove oil and grease. In addition to preventing corrosion, lead screw coatings improve the life of polymer parts. Lead screw assembly manufacturers offer a variety of customization options for their lead screw, including custom-molded nuts, thread forms, and nut bodies.
Lead screws are typically measured in rpm, or revolutions per minute. The PV curve represents the inverse relationship between contact surface pressure and sliding velocity. This value is affected by the material used in the construction of the screw, lubrication conditions, and end fixity. The critical speed of lead screws is determined by their length and minor diameter. End fixity refers to the support for the screw and affects its rigidity and critical speed.
The primary purpose of lead screws is to enable smooth movement. To achieve this, lead screws are usually preloaded with axial load, enabling consistent contact between a screw’s filets and nuts. Lead screws are often used in linear motion control systems and feature a large area of sliding contact between male and female threads. Lead screws can be manually operated or mortised and are available in a variety of sizes and materials. The materials used for lead screws include stainless steel and bronze, which are often protected by a PTFE type coating.
These screws are made of various materials, including stainless steel, bronze, and various plastics. They are also made to meet specific requirements for environmental conditions. In addition to lead screws, they can be made of stainless steel, aluminum, and carbon steel. Surface coatings can improve the screw’s corrosion resistance, while making it more wear resistant in tough environments. A screw that is coated with PTFE will maintain its anti-corrosion properties even in tough environments.
Clamp style collars
The screw shaft clamp style collar is a basic machine component, which is attached to the shaft via multiple screws. These collars act as mechanical stops, load bearing faces, or load transfer points. Their simple design makes them easy to install. This article will discuss the pros and cons of this style of collar. Let’s look at what you need to know before choosing a screw shaft clamp style collar. Here are some things to keep in mind.
Clamp-style shaft collars are a versatile mounting option for shafts. They have a recessed screw that fully engages the thread for secure locking. Screw shaft clamp collars come in different styles and can be used in both drive and power transmission applications. Listed below are the main differences between these two styles of collars. They are compatible with all types of shafts and are able to handle axial loads of up to 5500 pounds.
Clamp-style shaft collars are designed to prevent the screw from accidentally damaging the shaft when tightened. They can be tightened with a set screw to counteract the initial clamping force and prevent the shaft from coming loose. However, when tightening the screw, you should use a torque wrench. Using a set screw to tighten a screw shaft collar can cause it to warp and reduce the surface area that contacts the shaft.
Another key advantage to Clamp-style shaft collars is that they are easy to install. Clamp-style collars are available in one-piece and two-piece designs. These collars lock around the shaft and are easy to remove and install. They are ideal for virtually any shaft and can be installed without removing any components. This type of collar is also recommended for those who work on machines with sensitive components. However, be aware that the higher the OD, the more difficult it is to install and remove the collar.
Screw shaft clamp style collars are usually one-piece. A two-piece collar is easier to install than a one-piece one. The two-piece collars provide a more effective clamping force, as they use the full seating torque. Two-piece collars have the added benefit of being easy to install because they require no tools to install. You can disassemble one-piece collars before installing a two-piece collar.
Ball screw nut
The proper installation of a ball screw nut requires that the nut be installed on the center of the screw shaft. The return tubes of the ball nut must be oriented upward so that the ball nut will not overtravel. The adjusting nut must be tightened against a spacer or spring washer, then the nut is placed on the screw shaft. The nut should be rotated several times in both directions to ensure that it is centered.
Ball screw nuts are typically manufactured with a wide range of preloads. Large preloads are used to increase the rigidity of a ball screw assembly and prevent backlash, the lost motion caused by a clearance between the ball and nut. Using a large amount of preload can lead to excessive heat generation. The most common preload for ball screw nuts is 1 to 3%. This is usually more than enough to prevent backlash, but a higher preload will increase torque requirements.
The diameter of a ball screw is measured from its center, called the ball circle diameter. This diameter represents the distance a ball will travel during one rotation of the screw shaft. A smaller diameter means that there are fewer balls to carry the load. Larger leads mean longer travels per revolution and higher speeds. However, this type of screw cannot carry a greater load capacity. Increasing the length of the ball nut is not practical, due to manufacturing constraints.
The most important component of a ball screw is a ball bearing. This prevents excessive friction between the ball and the nut, which is common in lead-screw and nut combinations. Some ball screws feature preloaded balls, which avoid “wiggle” between the nut and the ball. This is particularly desirable in applications with rapidly changing loads. When this is not possible, the ball screw will experience significant backlash.
A ball screw nut can be either single or multiple circuits. Single or multiple-circuit ball nuts can be configured with one or two independent closed paths. Multi-circuit ball nuts have two or more circuits, making them more suitable for heavier loads. Depending on the application, a ball screw nut can be used for small clearance assemblies and compact sizes. In some cases, end caps and deflectors may be used to feed the balls back to their original position.
editor by czh 2022-11-25