Product Description

Product Description

Hot Sales Products

Our Advantages

Company Profile

Packaging & Shipping

FAQ

1.Are you a manufacturer or a trading company?
We are a 3000-square-meter factory located in zHangZhoug, China.

2.How can I get a quote?
Detailed drawings (PDF/STEP/IGS/DWG…) with material, quantity and surface treatment information.

3. Can I get a quote without drawings?
Sure, we appreciate to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.

4.Will my drawings be divulged if you benefit?
No, we pay much attention to protect our customers’ privacy of drawings

4. Can you provide samples before mass production?
Sure, sample fee is needed, will be returned when mass production if possible.

5. How about the lead time?
Generally, 1-2 weeks for samples, 3-4 weeks for mass production.

6. How do you control the quality?
(1) Material inspection–Check the material surface and roughly dimension.
(2) Production first inspection–To ensure the critical dimension in mass production.
(3) Sampling inspection–Check the quality before sending to the warehouse.
(4) Pre-shipment inspection–100% inspected by QC assistants before shipment.

8. What will you do if we receive poor quality parts?
Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap.

Back to homepage>>>

The benefits of rubber bushings and how they work

If you have experienced increased vibration while driving, you know the importance of replacing the control arm bushings. The resulting metal-to-metal contact can cause annoying driving problems and be a threat to your safety. Over time, the control arm bushings begin to wear out, a process that can be exacerbated by harsh driving conditions and environmental factors. Additionally, larger tires that are more susceptible to bushing wear are also prone to increased vibration transfer, especially for vehicles with shorter sidewalls. Additionally, these plus-sized tires, which are designed to fit on larger rims, have a higher risk of transmitting vibrations through the bushings.

rubber

Rubber bushings are rubber tubes that are glued into the inner or outer curve of a cylindrical metal part. The rubber is made of polyurethane and is usually prestressed to avoid breaking during installation. In some cases, the material is also elastic, so it can slide. These properties make rubber bushings an integral part of a vehicle’s suspension system. Here are some benefits of rubber bushings and how they work.
Rubber bushings are used to isolate and reduce vibration caused by the movement of the 2 pieces of equipment. They are usually placed between 2 pieces of machinery, such as gears or balls. By preventing vibrations, rubber bushings improve machine function and service life. In addition to improving the overall performance of the machine, the rubber bushing reduces noise and protects the operator from injury. The rubber on the shock absorber also acts as a vibration isolator. It suppresses the energy produced when the 2 parts of the machine interact. They allow a small amount of movement but minimize vibration.
Both rubber and polyurethane bushings have their advantages and disadvantages. The former is the cheapest, but not as durable as polyurethane. Compared to polyurethane, rubber bushings are a better choice for daily commutes, especially long commutes. Polyurethane bushings provide better steering control and road feel than rubber, but can be more expensive than the former. So how do you choose between polyurethane and rubber bushings?

Polyurethane

Unlike rubber, polyurethane bushings resist high stress environments and normal cycling. This makes them an excellent choice for performance builds. However, there are some disadvantages to using polyurethane bushings. Read on to learn about the advantages and disadvantages of polyurethane bushings in suspension applications. Also, see if a polyurethane bushing is suitable for your vehicle.
Choosing the right bushing for your needs depends entirely on your budget and application. Softer bushings have the lowest performance but may have the lowest NVH. Polyurethane bushings, on the other hand, may be more articulated, but less articulated. Depending on your needs, you can choose a combination of features and tradeoffs. While these are good options for everyday use, for racing and hardcore handling applications, a softer option may be a better choice.
The initial hardness of the polyurethane bushing is higher than that of the rubber bushing. The difference between the 2 materials is determined by durometer testing. Polyurethane has a higher hardness than rubber because it does not react to load in the same way. The harder the rubber, the less elastic, and the higher the tear. This makes it an excellent choice for bushings in a variety of applications.

hard

Solid bushings replace the standard bushings on the subframe, eliminating axle clutter. New bushings raise the subframe by 0.59″ (15mm), correcting the roll center. Plus, they don’t create cabin noise. So you can install these bushings even when your vehicle is lowered. But you should consider some facts when installing solid casing. Read on to learn more about these casings.
The stiffest bushing material currently available is solid aluminum. This material hardly absorbs vibrations, but it is not recommended for everyday use. Its stiffness makes it ideal for rail vehicles. The aluminum housing is prone to wear and tear and may not be suitable for street use. However, the solid aluminum bushings provide the stiffest feel and chassis feedback. However, if you want the best performance in everyday driving, you should choose a polyurethane bushing. They have lower friction properties and eliminate binding.
Sturdy subframe bushings will provide more driver feedback. Additionally, it will strengthen the rear body, eliminating any movement caused by the subframe. You can see this structural integration on the M3 and M4 models. The benefits of solid subframe bushings are numerous. They will improve rear-end handling without compromising drivability. So if you plan to install a solid subframe bushing, be sure to choose a solid bushing.

Capacitor classification

In the circuit, there is a high electric field on both sides of the capacitor grading bushing. This is due to their capacitor cores. The dielectric properties of the primary insulating layer have a great influence on the electric field distribution within the bushing. This article discusses the advantages and disadvantages of capacitor grade bushings. This article discusses the advantages and disadvantages of grading bushings for capacitors in DC power systems.
One disadvantage of capacitor grading bushings is that they are not suitable for higher voltages. Capacitor grading bushings are prone to serious heating problems. This may reduce their long-term reliability. The main disadvantage of capacitor grading bushings is that they increase the radial thermal gradient of the main insulation. This can lead to dielectric breakdown.
Capacitor grading bushing adopts cylindrical structure, which can suppress the influence of temperature on electric field distribution. This reduces the coefficient of inhomogeneity of the electric field in the confinement layer. Capacitor grading bushings have a uniform electric field distribution across their primary insulation. Capacitive graded bushings are also more reliable than nonlinear bushings.
Electric field variation is the most important cause of failure. The electrode extension layer can be patterned to control the electric field to avoid flashover or partial discharge of the primary insulating material. This design can be incorporated into capacitor grading bushings to provide better electric fields in high voltage applications. This type of bushing is suitable for a wide range of applications. This article discusses the advantages and disadvantages of capacitor grade bushings.

Metal

When choosing between plastic and metal sleeves, it is important to choose a product that can handle the required load. Plastic bushings tend to deteriorate and often crack under heavy loads, reducing their mechanical strength and service life. Metal bushings, on the other hand, conduct heat more efficiently, preventing any damage to the mating surfaces. Plastic bushings can also be made with lubricating fillers added to a resin matrix.
Plastic bushings have many advantages over metal bushings, including being cheap and versatile. Plastic bushings are now used in many industries because they are inexpensive and quick to install. These plastic products are also self-lubricating and require less maintenance than metals. They are often used in applications where maintenance costs are high or parts are difficult to access. Also, if they are prone to wear and tear, they are easy to replace.
Metal bushings can be made of PTFE, plastic or bronze and are self-lubricating. Graphite plugs are also available for some metal bushings. Their high load capacity and excellent fatigue resistance make them a popular choice for automotive applications. The bi-metallic sintered bronze layer in these products provides excellent load-carrying capacity and good friction properties. The steel backing also helps reduce processing time and avoids the need for additional pre-lubrication.

plastic

A plastic bushing is a small ball of material that is screwed onto a nut or locknut on a mechanical assembly. Plastic bushings are very durable and have a low coefficient of friction, making them a better choice for durable parts. Since they do not require lubrication, they last longer and cost less than their metal counterparts. Unlike metal bushings, plastic bushings also don’t scratch or attract dirt.
One type of acetal sleeve is called SF-2. It is made of metal alloy, cold rolled steel and bronze spherical powder. A small amount of surface plastic penetrated into the voids of the copper spherical powder. Plastic bushings are available in a variety of colors, depending on the intended application. SF-2 is available in black or grey RAL 7040. Its d1 diameter is sufficient for most applications.
Another acetal sleeve is UHMW-PE. This material is used in the production of bearings and in low load applications. This material can withstand pressures from 500 to 800 PSI and is widely available. It is also self-lubricating and readily available. Due to its high resistance to temperature and chemical agents, it is an excellent choice for low-load industrial applications. If you’re in the market for an alternative to nylon, consider acetal.
Positional tolerances in many automotive components can cause misalignment. Misaligned plastic bushings can negatively impact the driver’s experience. For example, the cross tubes used to mount the seat to the frame are made by a stamping process. The result is a misalignment that can increase torque. Also, the plastic bushing is pushed to 1 side of the shaft. The increased pressure results in higher friction, which ultimately results in a poor driving experience.
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Product Description

Product Description

Hot Sales Products

Our Advantages

Company Profile

Packaging & Shipping

FAQ

1.Are you a manufacturer or a trading company?
We are a 3000-square-meter factory located in zHangZhoug, China.

2.How can I get a quote?
Detailed drawings (PDF/STEP/IGS/DWG…) with material, quantity and surface treatment information.

3. Can I get a quote without drawings?
Sure, we appreciate to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.

4.Will my drawings be divulged if you benefit?
No, we pay much attention to protect our customers’ privacy of drawings

4. Can you provide samples before mass production?
Sure, sample fee is needed, will be returned when mass production if possible.

5. How about the lead time?
Generally, 1-2 weeks for samples, 3-4 weeks for mass production.

6. How do you control the quality?
(1) Material inspection–Check the material surface and roughly dimension.
(2) Production first inspection–To ensure the critical dimension in mass production.
(3) Sampling inspection–Check the quality before sending to the warehouse.
(4) Pre-shipment inspection–100% inspected by QC assistants before shipment.

8. What will you do if we receive poor quality parts?
Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap.

Back to homepage>>>

Types of Ball Bearings

There are many types of Ball Bearings available on the market, but which 1 is best for your application? Here, we will discuss the differences between Angular contact, Single-row, High-carbon steel, and Ceramic ball bearings. These types of bearings also feature races, or a groove in the center of each. These races are important in keeping the balls contained within the cylinder. They also provide a groove-baed pathway.

Ceramic

The ceramic ball used in ball bearings has many advantages. It is lightweight, operates at lower temperatures, has reduced skidding, and is resistant to electrolysis. The ball also exhibits longer fatigue life. All of these factors make the ceramic ball a good choice for many applications. But, how do you know if a ceramic ball bearing is right for your application? Read on to discover why ceramic ball bearings are a better choice than steel or stainless steel ones.
The ceramic balls are 40% more dense than steel. This means less centrifugal force is generated on the bearing, which suppresses heat generation. Because of this reduced friction, ceramic bearings are more efficient at transferring energy. Compared to steel bearings, ceramic balls have longer life spans. Nonetheless, these ceramic balls aren’t as strong as steel. Therefore, it is important to understand the limitations of the ceramic ball bearing before buying one.
The ceramic materials used for ball bearings are resistant to micro-welding. Metals undergo this process when imperfections in the surfaces interact. Eventually, this results in a brittle ball that reduces the life of a bearing. Unlike metals, ceramic materials have a stable behavior at high temperatures and exhibit less thermal expansion. This means that they can be used for applications where lubrication isn’t an option.
While steel balls can easily absorb contaminants and foreign particles, the ceramic ball is insensitive to this, and doesn’t require lubrication. This means they’re not susceptible to corrosion and other common problems. These are just a few reasons why ceramics are a better choice. This technology has a wide range of uses. It’s easy to see why it is so popular. If you’re looking for a new bearing for your application, be sure to contact an AST Applications Engineer. They can analyze your operating conditions and potential failure modes.

Angular contact

An Angular Contact Ball Bearing (also known as an angular-contact bearing) has an axial component that is generated when radial loads are applied. They are generally used in pairs, triplex sets, or quadruplex sets. These bearings are also available with Super Finished Raceways to reduce noise and improve lubricant distribution. Angular contact ball bearings have various design units, such as bore size, outer diameter, and outer ring width.
A single-row angular contact bearing has a radial contact angle that is equal to the angular distance between the 2 rings. Double-row angular bearings are designed for two-way thrust capability. These types of bearings can be purchased at Grainger and other online retailers. A typical angular contact bearing will last up to a million revolutions. They are often used in industrial angular contact bearings.
Single-row angular contact ball bearings feature a set contact angle. These bearings can support radial and axial loads, but they can’t withstand high speeds. Single-row angular contact ball bearings may also have 1 or 2 shoulders relieved. Thrust load is a pressure placed on the bearing when it is installed in an assembly, and it is used to create an angle between the races.
Angular contact ball bearings come in single and double-row configurations. They differ in the axial load they can carry and the type of lubrication they use. Angular contact ball bearings are ideal for high-speed applications and can accommodate both radial and axial loads. The type of contact and lubrication used in angular-contact ball bearings depends on the intended use for the bearing.

High-carbon steel

Carbon steel is a low-alloy and high-carbon steel used in bearings. This material provides superior strength and fatigue properties for ball and roller bearings. Its mechanical properties are ideal for applications where the temperature is less than 400 degrees Fahrenheit. High-carbon steel is also used to make bearing components for chrome steel bearings. These types of steels are softer than chrome steel but provide superior durability in applications where the material is exposed to severe conditions.
Hardened carbon steel balls with an AISI 1015 hardness index are used in a variety of automotive, commercial, and semi-precision applications. In addition to automotive applications, they are also used in slides, trolleys, and conveyors. AISI 1015 carbon steel balls are used in bearings. They can be purchased in a variety of weights and diameters. Carbon steel balls can also be purchased in nickel-plated or uncoated varieties for decorative purposes.
In order to determine whether a ball bearing is made of high-carbon steel, the material must be tested for its hardness. An ordinary pocket magnet will work well, but an ordinary rare earth magnet isn’t powerful enough to measure the hardness. If it attracts the magnet strongly, the metal is steel, while a weak magnet indicates a non-ferrous material. A hardness test requires a special microhardness test.
A lower-carbon steel is another option. Some miniature bearing manufacturers use a material with less carbon than AISI 440C. This material is also known as KS440 or X65Cr13. After being heat-treated, it develops smaller carbides, resulting in superior low-noise characteristics and the same corrosion-resistance as 440C. These materials are a less expensive alternative than chrome steel, but they are often less durable than chrome alloy steel.

Single-row

Single-row angular contact ball bearings accommodate axial loads in 1 direction. These are normally adjusted against a second bearing. Unlike other ball bearings, they are non-separable and contain an upper and lower shoulder. Single-row ball bearings are made of Chromium Steel (GCr15) which is heat-treated to achieve high uniform hardness and excellent wear resistance. They are the most commonly used type of bearings in the world.
Because of the angular contact between the radial plane and the raceway, single-row ball bearings transmit radial forces from raceway to raceway. A higher a, the greater the axial load carrying capacity of the bearing. Single-row angular contact ball bearings are ideal for high axial loads. However, they have limited preload capabilities and must be installed in pairs. Hence, they are best used for applications where axial forces must be distributed.
Single-row ball bearings can be pre-lubricated and have steel shields. They are also available with rubber seals or snap rings on the outside edge. They are available with various retainers, including pressed steel cages, plastic shields, and rubber seals. A tapered bore is also available upon request. They are ideal for applications where space is limited. The 6200 series of bearings are especially well suited for electrical motors, dental hand tools, and optical encoders.
Single-row angular contact ball bearings are widely used for axial loads. The outer and inner rings have slightly larger radii than the balls. These bearings can accommodate high speeds and low torque. They can also be supplied with different grease levels. If grease is needed, you can choose a lubricant that has different characteristics depending on the application. They are easy to install and maintain. However, they are not recommended for adjacent mounting.

Plastic

A plastic ball bearing is a highly versatile component that can be mounted in a variety of components, including wheels, pulleys and housings. The outer ring of a plastic bearing is usually the pulley profile. The inner ring can be made of a shaft or polymer. The integrated design of a plastic ball bearing helps to reduce assembly time and cost. Here are some of the benefits of this type of bearing:
First and foremost, plastic balls are lighter than metal balls. They also have less magnetic properties than steel balls, making them the best option for applications requiring low weight and noise. Glass balls are also lighter than stainless steel balls, making them the ideal metal-free choice. They are also very corrosion-resistant, which makes them a great choice for some applications. In addition to being lightweight, polymer ball bearings are also quiet. And because of their low weight, plastic ball bearings are ideal for applications that require fast speed.
Another advantage of plastic bearings is their ability to withstand high temperatures. This material is also abrasion and corrosion-resistant. It meets FDA and USDA acceptance requirements. Aside from its abrasion-resistant and corrosion-resistant properties, these plastics do not transfer heat. Aside from being extremely durable and flexible, most plastics are also self-lubricating. Common plastics include phenolics, acetals, nylon, and ultra high molecular weight polyethylene. Nonetheless, plastics have limitations, and these materials may be damaged by extreme temperatures or cold flow under heavy loads.
Other advantages of plastic ball bearings include their low density, high hardness and low friction coefficient, and ability to withstand heat and corrosion. Ceramics are also lightweight, non-conductive, and have superior resistance to friction. These products can withstand temperatures up to 1,800 degrees Fahrenheit. If you’re in the market for a plastic ball bearing, it’s important to choose the right type of material. And if you’re looking for a high-quality bearing, look no further.

Product Description

Product Description

Hot Sales Products

Our Advantages

Company Profile

Packaging & Shipping

FAQ

1.Are you a manufacturer or a trading company?
We are a 3000-square-meter factory located in zHangZhoug, China.

2.How can I get a quote?
Detailed drawings (PDF/STEP/IGS/DWG…) with material, quantity and surface treatment information.

3. Can I get a quote without drawings?
Sure, we appreciate to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.

4.Will my drawings be divulged if you benefit?
No, we pay much attention to protect our customers’ privacy of drawings

4. Can you provide samples before mass production?
Sure, sample fee is needed, will be returned when mass production if possible.

5. How about the lead time?
Generally, 1-2 weeks for samples, 3-4 weeks for mass production.

6. How do you control the quality?
(1) Material inspection–Check the material surface and roughly dimension.
(2) Production first inspection–To ensure the critical dimension in mass production.
(3) Sampling inspection–Check the quality before sending to the warehouse.
(4) Pre-shipment inspection–100% inspected by QC assistants before shipment.

8. What will you do if we receive poor quality parts?
Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap.

Back to homepage>>>

Analytical Approaches to Estimating Contact Pressures in Spline Couplings

A spline coupling is a type of mechanical connection between 2 rotating shafts. It consists of 2 parts – a coupler and a coupling. Both parts have teeth which engage and transfer loads. However, spline couplings are typically over-dimensioned, which makes them susceptible to fatigue and static behavior. Wear phenomena can also cause the coupling to fail. For this reason, proper spline coupling design is essential for achieving optimum performance.

Modeling a spline coupling

Spline couplings are becoming increasingly popular in the aerospace industry, but they operate in a slightly misaligned state, causing both vibrations and damage to the contact surfaces. To solve this problem, this article offers analytical approaches for estimating the contact pressures in a spline coupling. Specifically, this article compares analytical approaches with pure numerical approaches to demonstrate the benefits of an analytical approach.
To model a spline coupling, first you create the knowledge base for the spline coupling. The knowledge base includes a large number of possible specification values, which are related to each other. If you modify 1 specification, it may lead to a warning for violating another. To make the design valid, you must create a spline coupling model that meets the specified specification values.
After you have modeled the geometry, you must enter the contact pressures of the 2 spline couplings. Then, you need to determine the position of the pitch circle of the spline. In Figure 2, the centre of the male coupling is superposed to that of the female spline. Then, you need to make sure that the alignment meshing distance of the 2 splines is the same.
Once you have the data you need to create a spline coupling model, you can begin by entering the specifications for the interface design. Once you have this data, you need to choose whether to optimize the internal spline or the external spline. You’ll also need to specify the tooth friction coefficient, which is used to determine the stresses in the spline coupling model 20. You should also enter the pilot clearance, which is the clearance between the tip 186 of a tooth 32 on 1 spline and the feature on the mating spline.
After you have entered the desired specifications for the external spline, you can enter the parameters for the internal spline. For example, you can enter the outer diameter limit 154 of the major snap 54 and the minor snap 56 of the internal spline. The values of these parameters are displayed in color-coded boxes on the Spline Inputs and Configuration GUI screen 80. Once the parameters are entered, you’ll be presented with a geometric representation of the spline coupling model 20.

Creating a spline coupling model 20

The spline coupling model 20 is created by a product model software program 10. The software validates the spline coupling model against a knowledge base of configuration-dependent specification constraints and relationships. This report is then input to the ANSYS stress analyzer program. It lists the spline coupling model 20’s geometric configurations and specification values for each feature. The spline coupling model 20 is automatically recreated every time the configuration or performance specifications of the spline coupling model 20 are modified.
The spline coupling model 20 can be configured using the product model software program 10. A user specifies the axial length of the spline stack, which may be zero, or a fixed length. The user also enters a radial mating face 148, if any, and selects a pilot clearance specification value of 14.5 degrees or 30 degrees.
A user can then use the mouse 110 to modify the spline coupling model 20. The spline coupling knowledge base contains a large number of possible specification values and the spline coupling design rule. If the user tries to change a spline coupling model, the model will show a warning about a violation of another specification. In some cases, the modification may invalidate the design.
In the spline coupling model 20, the user enters additional performance requirement specifications. The user chooses the locations where maximum torque is transferred for the internal and external splines 38 and 40. The maximum torque transfer location is determined by the attachment configuration of the hardware to the shafts. Once this is selected, the user can click “Next” to save the model. A preview of the spline coupling model 20 is displayed.
The model 20 is a representation of a spline coupling. The spline specifications are entered in the order and arrangement as specified on the spline coupling model 20 GUI screen. Once the spline coupling specifications are entered, the product model software program 10 will incorporate them into the spline coupling model 20. This is the last step in spline coupling model creation.

Analysing a spline coupling model 20

An analysis of a spline coupling model consists of inputting its configuration and performance specifications. These specifications may be generated from another computer program. The product model software program 10 then uses its internal knowledge base of configuration dependent specification relationships and constraints to create a valid three-dimensional parametric model 20. This model contains information describing the number and types of spline teeth 32, snaps 34, and shoulder 36.
When you are analysing a spline coupling, the software program 10 will include default values for various specifications. The spline coupling model 20 comprises an internal spline 38 and an external spline 40. Each of the splines includes its own set of parameters, such as its depth, width, length, and radii. The external spline 40 will also contain its own set of parameters, such as its orientation.
Upon selecting these parameters, the software program will perform various analyses on the spline coupling model 20. The software program 10 calculates the nominal and maximal tooth bearing stresses and fatigue life of a spline coupling. It will also determine the difference in torsional windup between an internal and an external spline. The output file from the analysis will be a report file containing model configuration and specification data. The output file may also be used by other computer programs for further analysis.
Once these parameters are set, the user enters the design criteria for the spline coupling model 20. In this step, the user specifies the locations of maximum torque transfer for both the external and internal spline 38. The maximum torque transfer location depends on the configuration of the hardware attached to the shafts. The user may enter up to 4 different performance requirement specifications for each spline.
The results of the analysis show that there are 2 phases of spline coupling. The first phase shows a large increase in stress and vibration. The second phase shows a decline in both stress and vibration levels. The third stage shows a constant meshing force between 300N and 320N. This behavior continues for a longer period of time, until the final stage engages with the surface.

Misalignment of a spline coupling

A study aimed to investigate the position of the resultant contact force in a spline coupling engaging teeth under a steady torque and rotating misalignment. The study used numerical methods based on Finite Element Method (FEM) models. It produced numerical results for nominal conditions and parallel offset misalignment. The study considered 2 levels of misalignment – 0.02 mm and 0.08 mm – with different loading levels.
The results showed that the misalignment between the splines and rotors causes a change in the meshing force of the spline-rotor coupling system. Its dynamics is governed by the meshing force of splines. The meshing force of a misaligned spline coupling is related to the rotor-spline coupling system parameters, the transmitting torque, and the dynamic vibration displacement.
Despite the lack of precise measurements, the misalignment of splines is a common problem. This problem is compounded by the fact that splines usually feature backlash. This backlash is the result of the misaligned spline. The authors analyzed several splines, varying pitch diameters, and length/diameter ratios.
A spline coupling is a two-dimensional mechanical system, which has positive backlash. The spline coupling is comprised of a hub and shaft, and has tip-to-root clearances that are larger than the backlash. A form-clearance is sufficient to prevent tip-to-root fillet contact. The torque on the splines is transmitted via friction.
When a spline coupling is misaligned, a torque-biased thrust force is generated. In such a situation, the force can exceed the torque, causing the component to lose its alignment. The two-way transmission of torque and thrust is modeled analytically in the present study. The analytical approach provides solutions that can be integrated into the design process. So, the next time you are faced with a misaligned spline coupling problem, make sure to use an analytical approach!
In this study, the spline coupling is analyzed under nominal conditions without a parallel offset misalignment. The stiffness values obtained are the percentage difference between the nominal pitch diameter and load application diameter. Moreover, the maximum percentage difference in the measured pitch diameter is 1.60% under a torque of 5000 N*m. The other parameter, the pitch angle, is taken into consideration in the calculation.

Product Description

Product Description

Hot Sales Products

Our Advantages

Company Profile

Packaging & Shipping

FAQ

1.Are you a manufacturer or a trading company?
We are a 3000-square-meter factory located in zHangZhoug, China.

2.How can I get a quote?
Detailed drawings (PDF/STEP/IGS/DWG…) with material, quantity and surface treatment information.

3. Can I get a quote without drawings?
Sure, we appreciate to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.

4.Will my drawings be divulged if you benefit?
No, we pay much attention to protect our customers’ privacy of drawings

4. Can you provide samples before mass production?
Sure, sample fee is needed, will be returned when mass production if possible.

5. How about the lead time?
Generally, 1-2 weeks for samples, 3-4 weeks for mass production.

6. How do you control the quality?
(1) Material inspection–Check the material surface and roughly dimension.
(2) Production first inspection–To ensure the critical dimension in mass production.
(3) Sampling inspection–Check the quality before sending to the warehouse.
(4) Pre-shipment inspection–100% inspected by QC assistants before shipment.

8. What will you do if we receive poor quality parts?
Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap.

Back to homepage>>>

What Is a Worm Gear Reducer?

If you have never seen a worm gear reducer before, you’re missing out! Learn more about these incredible gears and their applications by reading this article! In addition to worm gear reducers, learn about worms and how they’re made. You’ll also discover what types of machines can benefit from worm gears, such as rock crushers and elevators. The following information will help you understand what a worm gear reducer is and how to find 1 in your area.

Typical worm shaft

A typical worm has 2 shafts, 1 for advancing and 1 for receding, which form the axial pitch of the gear. Usually, there are 8 standard axial pitches, which establish a basic dimension for worm production and inspection. The axial pitch of the worm equals the circular pitch of the gear in the central plane and the master lead cam’s radial pitch. A single set of change gears and 1 master lead cam are used to produce each size of worm.
Worm gear is commonly used to manufacture a worm shaft. It is a reliable and efficient gear reduction system that does not move when the power is removed. Typical worm gears come in standard sizes as well as assisted systems. Manufacturers can be found online. Listed below are some common materials for worm gears. There are also many options for lubrication. The worm gear is typically made from case hardened steel or bronze. Non-metallic materials are also used in light-duty applications.
A self-locking worm gear prevents the worm from moving backwards. Typical worm gears are generally self-locking when the lead angle is less than 11 degrees. However, this feature can be detrimental to systems that require reverse sensitivity. If the lead angle is less than 4 degrees, back-driving is unlikely. However, if fail-safe protection is a prerequisite, back-driving worm gears must have a positive brake to avoid reverse movement.
Worm gears are often used in transmission applications. They are a more efficient way to reduce the speed of a machine compared to conventional gear sets. Their reduced speed is possible thanks to their low ratio and few components. Unlike conventional gear sets, worm gears require less maintenance and lower mechanical failure than a conventional gear set. While they require fewer parts, worm gears are also more durable than conventional gear sets.
There are 2 types of worm tooth forms. Convex and involute helicoids have different types of teeth. The former uses a straight line to intersect the involute worm generating line. The latter, on the other hand, uses a trapezoid based on the central cross section of the root. Both of these tooth forms are used in the production of worms. And they have various variations in pitch diameter.

Types of worms

Worms have several forms of tooth. For convenience in production, a trapezoid-based tooth form is used. Other forms include an involute helicoidal or a convolute worm generating a line. The following is a description of each type. All types are similar, and some may be preferred over others. Listed below are the 3 most common worm shaft types. Each type has its own advantages and disadvantages.
Discrete versus parallel axis: The design of a worm gear determines its ratio of torque. It’s a combination of 2 different metals – 1 for the worm and 1 for the wheel – which helps it absorb shock loads. Construction equipment and off-road vehicles typically require varying torques to maneuver over different terrain. A worm gear system can help them maneuver over uneven terrain without causing excessive wear.
Worm gear units have the highest ratio. The sliding action of the worm shaft results in a high self-locking torque. Depending on the angle of inclination and friction, a worm gear can reach up to 100:1! Worm gears can be made of different materials depending on their inclination and friction angle. Worm gears are also useful for gear reduction applications, such as lubrication or grinding. However, you should consider that heavier gears tend to be harder to reverse than lighter ones.
Metal alloy: Stainless steel, brass, and aluminum bronze are common materials for worm gears. All 3 types have unique advantages. A bronze worm gear is typically composed of a combination of copper, zinc, and tin. A bronze shaft is more corrosive than a brass one, but it is a durable and corrosion-resistant option. Metal alloys: These materials are used for both the worm wheel.
The efficiency of worm gears depends on the assembly conditions and the lubricant. A 30:1 ratio reduces the efficiency to 81:1%. A worm gear is more efficient at higher ratios than an helical gear, but a 30:1 ratio reduces the efficiency to 81%. A helical gear reduces speed while preserving torque to around 15% of the original speed. The difference in efficiency between worm gear and helical gear is about half an hour!

Methods of manufacturing worm shafts

Several methods of manufacturing worm shafts are available in the market. Single-pointed lathe tools or end mills are the most popular methods for manufacturing worms. These tools are capable of producing worms with different pressure angles depending on their diameter, the depth of thread, and the grinding wheel’s diameter. The diagram below shows how different pressure angles influence the profile of worms manufactured using different cutting tools.
The method for making worm shafts involves the process of establishing the proper outer diameter of a common worm shaft blank. This may include considering the number of reduction ratios in a family, the distance between the worm shaft and the gear set center, as well as the torques involved. These processes are also referred to as ‘thread assembly’. Each process can be further refined if the desired axial pitch can be achieved.
The axial pitch of a worm must match the circular pitch of the larger gear. This is called the pitch. The pitch diameter and axial pitch must be equal. Worms can be left-handed or right-handed. The lead, which refers to the distance a point on the thread travels during 1 revolution of the worm, is defined by its angle of tangent to the helix on the pitch of the cylinder.
Worm shafts are commonly manufactured using a worm gear. Worm gears can be used in different applications because they offer fine adjustment and high gear reduction. They can be made in both standard sizes and assisted systems. Worm shaft manufacturers can be found online. Alternatively, you can contact a manufacturer directly to get your worm gears manufactured. The process will take only a few minutes. If you are looking for a manufacturer of worm gears, you can browse a directory.
Worm gears are made with hardened metal. The worm wheel and gear are yellow in color. A compounded oil with rust and oxidation inhibitors is also used to make worm gears. These oils adhere to the shaft walls and make a protective barrier between the surfaces. If the compounded oil is applied correctly, the worm gear will reduce the noise in a motor, resulting in a smoother performance.

applications for worm gear reducers

Worm gears are widely used in power transmission applications, providing a compact, high reduction, low-speed drive. To determine the torque ratio of worm gears, a numerical model was developed that makes use of the equation of displacement compatibility and the influence coefficient method, which provides fast computing. The numerical model also incorporates bending deflections of the gear surfaces and the mating surfaces. It is based on the Boussinesq theory, which calculates local contact deformations.
Worm gears can be designed to be right or left-handed, and the worm can turn either clockwise or counter-clockwise. An internal helical gear requires the same hand to operate both parts. In contrast, an external helical gear must be operated by the opposite hand. The same principle applies to worm gears in other applications. The torque and power transferred can be large, but worm gears are able to cope with large reductions in both directions.
Worm gears are extremely useful in industrial machinery designs. They reduce noise levels, save space, and give machines extra precision and fast-stopping capabilities. Worm gears are also available in compact versions, making them ideal for hoisting applications. This type of gear reducer is used in industrial settings where space is an issue. Its smaller size and less noise makes it ideal for applications that need the machine to stop quickly.
A double-throated worm gear offers the highest load capacity while still remaining compact. The double-throated version features concave teeth on both worm and gear, doubling the contact area between them. Worm gears are also useful for low to moderate-horsepower applications, and their high ratios, high output torque, and significant speed reduction make them a desirable choice for many applications. Worm gears are also quieter than other types of gears, reducing the noise and vibrations that they cause.
Worm gears have numerous advantages over other types of gears. They have high levels of conformity and can be classified as a screw pair within a lower-pair gear family. Worm gears are also known to have a high degree of relative sliding. Worm gears are often made of hardened steel or phosphor-bronze, which provides good surface finish and rigid positioning. Worm gears are lubricated with special lubricants that contain surface-active additives. Worm gear lubrication is a mixed lubrication process and causes mild wear and tear.