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?
________\\\ ________
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 Haitan CL272 steel screw PC shaft hinges adjustable torque position control black PA hinge screw adjustable axle stands
Type: Furniture Hinge
Mail packing: Y
Application: Outdoor, Apartment, Office Building, Mall, Warehouse, Other, Garage & Shed, Gym
Design Style: Modern
Model Number: CL272
Size: As drawing
Opening angle: As drawing
Material: PLASTIC
Packaging Details: Standard export packing
| 1.ITEM NO. | CL272 |
| 2.Lock Type | Hinge |
| 3.Material | Stainless steel |
1.Are your company a trading 1 or a factory?
Factory.We are the manufacturer of Locks,Cam Lock,Cabinet Lock, CZPT Radial Bearing HI-CAP ST5186 Truck Wheel HC ST5186 LFT 90366-51001 Taper Roller Bearings Industrial Lock, hinges,Aluminum door & windows hardware Accessories.
2.Any MOQ for your products?
No, but we appreciated you to reach 100pcs each.
3.How can I get some samples?
Please advise us your courier account no. Such as DHL/TNT/FEDEX. Free samples will be ready within 3 days.
4.What’s your terms?
Payment Terms: T/T,LC at sight
5.After an order is placed, what’s the delivery time?
We always keep hot-selling goods in stocks. When you place the order, we could send you within 3days. If no ready goods, 32216 Textile Bearing 35716 Chinese Factory Good Quality Tapered Roller Bearing 35716 32216 we could finish within 15-20days depending items.
6. Do your company accept customization?
Yes, We have professional R &D team to support custom design products, We will also use 3D printer to make the prototype quickly.
7.Are you able to produce custom parts?
ISO AND SGS
8.Could I see 3D-effect of the lock?
Yes, 3D model drawing & CAD drawing are available CZPT request.
9.Where is your factory located?How can I visit there?
Our factory is located inHangZhou City, ZHangZhoug Province, China. All our clients, from home or abroad, are warmly welcome to visit us! 24V power unit hydraulic oil pump motor manufacturer Small DC brush mechanical equipment motor
Screw Sizes and Their Uses
Screws have different sizes and features. This article will discuss screw sizes and their uses. There are two main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.
The major diameter of a screw shaft
The major diameter of a screw shaft is the distance from the outer edge of the thread on one side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between two and sixteen inches. A screw with a pointy tip has a smaller major diameter than one without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is one element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
The pitch diameter of a screw shaft
When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of one thread to the corresponding point on the next thread. Measurement is made from one thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.
The thread depth of a screw shaft
Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in one revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
The lead of a screw shaft
Pitch and lead are two measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are two ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with two or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.
The thread angle of a screw shaft
The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are two types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
The tapped hole (or nut) into which the screw fits
A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.
editor by czh 2023-07-03
China Factory Directly Supply ISO&JIP High Durability Rigidity Torque Rigid Shaft Coupling Aluminum Alloy Shaft Couplings screw shaft cleaning
Warranty: 1 year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Farms, Printing Shops, Construction works , Energy & Mining, Other
Customized support: OEM, ODM, OBM
Structure: Set Screw
Flexible or Rigid: Rigid
Standard or Nonstandard: Standard
Material: Steel
Brand: Transfer
Type: Aluminum Rigid Set Screws Coupling
Inner Hole Diameter: 3~32
Outer Diameter: 16~63
Body Material: High Strength Aluminum
Tightening Method: Jack Screw(keyway is available)
Rotate Speed (r/min): 0~23000
Allowable Torque Range(N.m): 5~115N.M
Usage: asynchromous motor/stepping motor
keyword: rigid servo motor coupling
Packaging Details: carton box + wooden box
| Factory Directly Supply ISO&JIP High Durability Rigidity Torque Rigid Shaft Coupling Aluminum Alloy Shaft Couplings | ||||||||
Types of Screw Shafts
Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which one is the best choice for your project? Here are some tips to choose the right screw:
Machined screw shaft
The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
Acme screw
An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
Lead screw
A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, one should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.
Fully threaded screw
A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are two major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically one millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect two elements.
Ball screw
The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.
editor by czh 2023-06-27
China High Torque Twin Screw Extruder Shat Tex54 Extruder Shaft Wr15e Material threaded arbor shaft
Solution Description
Large Torque Twin Screw Extruder Shat TEX54 Extruder Shaft WR15E Material
Desigend for substantial-stop consumers of twin screw extruders: Large Torque, Large Power, Higher Precision Extruder Shaft
Creation description:
| Item title | Twin screw shaft | manufacturer title | JOINER |
| Design number | TEX54 | Substance | WR15E WR30 40CrNiMo |
| Spline kind | involute internal spline | Area of unique | ZheJiang , China |
| Size | Dia 10-120mm/ L 500-900mm | Screw mixture | Brick patern construction |
| Construction | With or with no cooling program | L/D | forty:1 / 44:1 / forty eight:one |
As the twin screw extruder moves towards high pace and higher torque, increased requirements are put on the strength (especially thermal power) and precision of the twin screw extruder shaft, Via in depth analysis and painstaking analysis, our company adopts impots impoted pre-hard alloy tool metal from Germany. The spline processing adopts cold rolling processing of imported CNC products type Europe. The goods have been tested by consumers and fully fulfill the overall performance high quality specifications of comparable imported high finish products.
Chilly Rolling Shaft Creation Products
We manufacture screw shafts for co-rotating twin screw extruders ranging from 10 mm to 120 mm /Length five hundred-900mm and more than. With cooling system /without cooling method. Our production specializes in shafts for twin screw extruders and is optimized for flexible order managing.
Sorts of shaft:
One keyway Square keyslot High torque crucial button Dual keyslot
Involute inner spline Round keyslot Retackle spline Client demands offered
Content choice:
WR15E WR30 40CrNiMo
| Ralloy WR15E | WR30 | 40CrNiMo |
|
Ralloy WR15E is a chromium-molybdenum-vanadium-slloyed steel which is characterised by: |
Ralloy WR30 is a high pressure nitriding iron-based Cr-Mo alloy Which is characterised by | 40CrNiMo i a sort of alloy constructional steel. |
| Excellent tensile strength merged with great toughness | Superior corrosion resistance | |
| High thermal balance, high resistant to thermal shocks | Excellent machinablity | |
| Good large-temperature toughness | High dimensional stablity after heat remedy. | |
| Good machinability and polishablity | Excellent grinding and sharpening capability to obtain optimum surface high quality | |
| Exceptional by way of-hardening properties | High toughness by maximun hardness underneath static and dynamic demands | |
| Good dimensional security during hardening. | Good wear resistance | |
| High mood resistance up to 500 °C |
Packaging and Delivery
Packaging Details: Picket Situation,Sea-deserving or export standard.
Port: HangZhou
Lead time: forty-fifty days right after buy affirmation.
FRQ
1. Q: Are you a factory or trading company?
—-A: A manufacturing unit
2. Q: Where is your factory located? How can I visit there?
—–A: Our factory is located in HangZhou, ZheJiang Province, China,
one) You can fly to HangZhou Airport directly. We will pick you up when you arrive in the airport
All our clients, from domestic or abroad, are warmly welcome to visit us!
3.Q: What makes you different with others?
—-A: 1) Our Excellent Service
For a quick, no hassle quote just send email to us
We promise to reply with a price within 24 hours – sometimes even within the hour.
If you need an advice, just call our export office at 571 87226313, we will answer your questions immediately.
two) Our quick manufacturing time
For Normal orders, we will promise to produce within 30 working days.
As a manufacturer, we can ensure the delivery time according to the formal contract.
4.Q: How about the delivery time?
—-A: This depends on the product. Typically standard products are delivered within 30 days.
- Q: What is the term of payment?
—-A: 1) T/T payment 2) LC
6.Q: May I know the status of my order?
—-A: Yes .We will send you information and photos at different production stage of your order. You will get the latest information in time.
|
US $300-2,000 / Piece | |
10 Pieces (Min. Order) |
###
| Transport Package: | Wood |
|---|---|
| Trademark: | JOINER |
| Origin: | Sichuan |
###
| Samples: |
US$ 500/Piece
1 Piece(Min.Order) |
|---|
###
| Customization: |
Available
|
|---|
###
| Product name | Twin screw shaft | brand name | JOINER |
| Model number | TEX54 | Material | WR15E WR30 40CrNiMo |
| Spline type | involute inner spline | Place of original | Sichuan, China |
| Size | Dia 10-120mm/ L 500-900mm | Screw combination | Brick patern construction |
| Construction | With or without cooling system | L/D | 40:1 / 44:1 / 48:1 |
###
 |
|
###
| Ralloy WR15E | WR30 | 40CrNiMo |
|
Ralloy WR15E is a chromium-molybdenum-vanadium-slloyed steel which is characterized by: |
Ralloy WR30 is a high pressure nitriding iron-based Cr-Mo alloy Which is characterized by | 40CrNiMo i a kind of alloy constructional steel. |
| Excellent tensile strength combined with good toughness | Superior corrosion resistance | |
| High thermal stability, high resistant to thermal shocks | Excellent machinablity | |
| Good high-temperature strength | High dimensional stablity after heat treatment. | |
| Good machinability and polishablity | Excellent grinding and polishing ability to obtain optimal surface quality | |
| Excellent through-hardening properties | High durability by maximun hardness under static and dynamic demands | |
| Good dimensional stability during hardening. | Good wear resistance | |
| High temper resistance up to 500 °C |
|
US $300-2,000 / Piece | |
10 Pieces (Min. Order) |
###
| Transport Package: | Wood |
|---|---|
| Trademark: | JOINER |
| Origin: | Sichuan |
###
| Samples: |
US$ 500/Piece
1 Piece(Min.Order) |
|---|
###
| Customization: |
Available
|
|---|
###
| Product name | Twin screw shaft | brand name | JOINER |
| Model number | TEX54 | Material | WR15E WR30 40CrNiMo |
| Spline type | involute inner spline | Place of original | Sichuan, China |
| Size | Dia 10-120mm/ L 500-900mm | Screw combination | Brick patern construction |
| Construction | With or without cooling system | L/D | 40:1 / 44:1 / 48:1 |
###
|
|
###
| Ralloy WR15E | WR30 | 40CrNiMo |
|
Ralloy WR15E is a chromium-molybdenum-vanadium-slloyed steel which is characterized by: |
Ralloy WR30 is a high pressure nitriding iron-based Cr-Mo alloy Which is characterized by | 40CrNiMo i a kind of alloy constructional steel. |
| Excellent tensile strength combined with good toughness | Superior corrosion resistance | |
| High thermal stability, high resistant to thermal shocks | Excellent machinablity | |
| Good high-temperature strength | High dimensional stablity after heat treatment. | |
| Good machinability and polishablity | Excellent grinding and polishing ability to obtain optimal surface quality | |
| Excellent through-hardening properties | High durability by maximun hardness under static and dynamic demands | |
| Good dimensional stability during hardening. | Good wear resistance | |
| High temper resistance up to 500 °C |
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 2022-12-20