Tag Archives: steel belt pulley

China Custom in Stock Cast Iron Steel Taper Bushing for Belt Pulley bushing control arm

Product Description

Product Description

Product name

Taper lock bushing

Material

Steel, Cast iron, Stainless steel

Color

Black, Natural

Application

Accopanying sprocket, V-type pulley, Timing pulley, Gear ect

Inspection

100%

>> INSTALL
1) Clean shaft, bore and outside of bush, and bore of hub. Remove any oil, laquer of dirt. Place bush in hub and match half holes to make comelete holes(each comeplete hole will be threaded on 1 side only).
2) Lightly oil thread and point of set screws, or thread and under head of cap screws. Place screws loosely in holes that are threaded on hub side.
3) Make sure bush is free in hub. Slip assembly CHINAMFG shaft and locate in the desired position.
4) Tighten screws alternately and evenly until all are pulled up tightly(See table for torque settings)).
5) Hammer agsinst large end of bush using hammer and block or sleeve to avoid damage. Screws can now be turned a little more to the specified torque setting. Repeat this alternate hammering and screw re-tightening until the specified torque is reached. Fill all holes with grease to exclude dirt.

>>REMOVE
1) Remove all screws. Lightly oil thread and point of set screws, or thread and under head of cap screws.
2) Insert screws into removel holes that are threaded on the bush side. In sizes where washers are found under screws heads, be sure to use these washers.
3) Tighten screws alternately until bush is loosened in hub and then remove the coplete assembly. If bush does not loosen immediately tap on hub.
 

Packaging & Shipping

Company Profile

 

ZheJiang Haorongshengye Electrical Equipment Co., Ltd.

1. Was founded in 2008
2. Our Principle:

“Credibility Supremacy, and Customer First”
3. Our Promise:

“High quality products, and Excellent Service”
4. Our Value:

“Being Honesty, Doing the Best, and Long-lasting Development”
5. Our Aim:

“Develop to be a leader in the power transmission parts industry in the world”
 

6.Our services:

1).Competitive price

2).High quality products

3).OEM service or can customized according to your drawings

4).Reply your inquiry in 24 hours

5).Professional technical team 24 hours online service

6).Provide sample service

Main products

Machines

 

Exbihition

 

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Pulley Sizes: SPA/Spb/Spc/Spz
Manufacturing Process: Casting
Material: Carbon Steel
Surface Treatment: Polishing
Application: Chemical Industry, Grain Transport, Mining Transport, Power Plant
Bore Size: Demands
Samples:
US$ 100/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

taper bush

What are the differences between taper-lock pulley bushings and QD bushings?

Taper-lock pulley bushings and QD (Quick Disconnect) bushings are both commonly used in power transmission systems to secure pulleys onto shafts. While they serve a similar purpose, there are notable differences between these two types of bushings. Here’s a comparison of taper-lock pulley bushings and QD bushings:

Taper-Lock Pulley Bushings QD Bushings
Taper-lock pulley bushings have a tapered design with a keyway. QD bushings have a flanged design with a keyless locking mechanism.
Taper-lock bushings are commonly used in applications where frequent pulley removal or replacement is not required. QD bushings are designed for applications that require frequent pulley changes or adjustments.
Taper-lock bushings require a separate key to transmit torque between the bushing and the shaft. QD bushings use a mechanical interlocking mechanism to transmit torque without the need for a separate key.
Taper-lock bushings typically provide a more secure and rigid connection between the pulley and the shaft. QD bushings offer convenience and ease of installation, allowing for quick pulley changes without disassembling the entire drive system.
Taper-lock bushings are available in a wide range of sizes and bore diameters. QD bushings are also available in various sizes and bore diameters, with standardized dimensions for compatibility.
Taper-lock bushings may require additional tools, such as a puller, for pulley removal. QD bushings can be easily installed or removed using basic hand tools, eliminating the need for specialized equipment.

When selecting between taper-lock pulley bushings and QD bushings, consider the specific requirements of your application. If you anticipate infrequent pulley changes and prioritize a rigid connection, taper-lock bushings may be suitable. On the other hand, if you require frequent pulley adjustments or replacements and value convenience, QD bushings offer a keyless, quick-disconnect solution. Consulting with pulley and bushing manufacturers or industry experts can provide further guidance based on your specific application needs.

taper bush

Can I find educational resources on the design considerations when using pulley bushings in machinery?

Yes, there are educational resources available that provide valuable information on the design considerations when using pulley bushings in machinery. Understanding the design considerations is crucial for ensuring optimal performance, reliability, and longevity of the machinery. Here are some sources where you can find educational resources on the design considerations related to pulley bushings:

  • Engineering Textbooks and Reference Books: Engineering textbooks and reference books on mechanical design, machine elements, or power transmission systems often cover the design considerations for using pulley bushings. These resources provide theoretical background, practical guidelines, and case studies related to pulley bushing design. Examples of widely used textbooks in this area include “Machine Design” by Robert L. Norton and “Mechanical Engineering Design” by Joseph Edward Shigley and Charles R. Mischke.
  • University and College Courses: Many educational institutions offer courses related to mechanical engineering, machine design, or power transmission systems. These courses often cover topics such as pulley systems and bushing design considerations. Lecture notes, course materials, and online resources from reputable institutions can provide valuable insights into the design considerations when using pulley bushings in machinery.
  • Industry Associations and Organizations: Industry associations and organizations related to mechanical engineering, power transmission, or specific industries (such as automotive or manufacturing) often provide educational resources and publications on best practices and design considerations. Examples of such organizations include the American Society of Mechanical Engineers (ASME) and the Power Transmission Distributors Association (PTDA). Their websites, technical papers, and industry publications can offer valuable information on pulley bushing design considerations.
  • Online Engineering Communities and Forums: Online engineering communities and forums, such as engineering.stackexchange.com or eng-tips.com, provide platforms for professionals, enthusiasts, and experts to discuss and share knowledge on various engineering topics. Participating in these communities and posting specific questions about pulley bushing design considerations can lead to valuable insights and recommendations from experienced engineers.
  • Manufacturer Documentation and Technical Guides: Pulley and bushing manufacturers often provide documentation and technical guides related to the design considerations when using their products. These resources may cover topics such as proper installation, alignment, load capacity calculations, and maintenance guidelines. Checking the manufacturer’s websites, product catalogs, or contacting their customer support can provide access to educational resources specific to the pulley bushings they offer.

When seeking educational resources on the design considerations when using pulley bushings in machinery, it’s important to consider the credibility of the source, the relevance to your specific application, and the depth of information provided. Combining information from multiple reputable sources can help you gain a comprehensive understanding of the design considerations and make informed decisions.

It’s worth noting that the availability and access to educational resources may vary. Some resources may require a subscription or purchase, while others may be freely available online. Exploring various sources and utilizing both online and offline educational materials can enhance your knowledge on pulley bushing design considerations.

taper bush

What is the purpose of a pulley bushing in mechanical systems?

A pulley bushing serves an essential role in mechanical systems, specifically in the assembly and operation of pulley systems. It is a component designed to provide support, alignment, and rotational motion for pulleys. Here is a detailed explanation of the purpose of a pulley bushing:

1. Support and Alignment:

– The primary purpose of a pulley bushing is to provide support and alignment for the pulley. It serves as a mounting point or interface between the pulley and the shaft on which it is installed.

– The bushing ensures that the pulley is securely and accurately positioned on the shaft, maintaining proper alignment with other components in the system. It helps prevent misalignment, excessive vibrations, and premature wear of the pulley and associated components.

2. Rotational Motion:

– A pulley bushing facilitates the smooth and efficient rotational motion of the pulley. It acts as a bearing surface that allows the pulley to rotate freely on the shaft.

– The bushing reduces friction between the pulley and the shaft, minimizing energy losses and wear. It enables the pulley to rotate with minimal resistance, promoting efficient power transmission and motion transfer within the mechanical system.

3. Load Distribution:

– In pulley systems, the bushing helps distribute loads evenly across the shaft and the pulley. It helps prevent localized stress concentrations that could lead to premature failure or damage to the pulley or the shaft.

– By providing a larger bearing surface area, the bushing spreads the load over a wider region, reducing the pressure on specific points of contact. This improves the overall strength and durability of the pulley system, allowing it to handle higher loads and operate more reliably.

4. Shaft Protection:

– A pulley bushing also serves to protect the shaft from wear and damage caused by the rotational motion of the pulley. It acts as a barrier between the pulley and the shaft, reducing direct contact and minimizing frictional forces.

– The bushing can be made from materials that offer excellent resistance to wear, such as bronze, plastic, or self-lubricating materials. These materials help minimize abrasion and extend the lifespan of the shaft, ensuring the longevity and performance of the pulley system.

5. Easy Installation and Maintenance:

– Pulley bushings are designed for easy installation and maintenance. Many bushings feature a split design, allowing them to be easily mounted or removed from the shaft without disassembling the entire pulley system.

– This split design simplifies maintenance tasks such as pulley replacement or system adjustments, reducing downtime and improving the overall efficiency of the mechanical system.

In summary, the purpose of a pulley bushing in mechanical systems is to provide support, alignment, and rotational motion for pulleys. It ensures proper positioning, enables smooth rotation, distributes loads, protects the shaft, and facilitates easy installation and maintenance. By performing these functions, the pulley bushing contributes to the overall performance, efficiency, and longevity of pulley systems in various applications.

China Custom in Stock Cast Iron Steel Taper Bushing for Belt Pulley   bushing control arm			China Custom in Stock Cast Iron Steel Taper Bushing for Belt Pulley   bushing control arm
editor by CX 2024-05-08

China Standard in Stock Cast Iron Steel Taper Bushing for Belt Pulley manufacturer

Product Description

Product Description

Product name

Taper lock bushing

Material

Steel, Cast iron, Stainless steel

Color

Black, Natural

Application

Accopanying sprocket, V-type pulley, Timing pulley, Gear ect

Inspection

100%

>> INSTALL
1) Clean shaft, bore and outside of bush, and bore of hub. Remove any oil, laquer of dirt. Place bush in hub and match half holes to make comelete holes(each comeplete hole will be threaded on 1 side only).
2) Lightly oil thread and point of set screws, or thread and under head of cap screws. Place screws loosely in holes that are threaded on hub side.
3) Make sure bush is free in hub. Slip assembly CHINAMFG shaft and locate in the desired position.
4) Tighten screws alternately and evenly until all are pulled up tightly(See table for torque settings)).
5) Hammer agsinst large end of bush using hammer and block or sleeve to avoid damage. Screws can now be turned a little more to the specified torque setting. Repeat this alternate hammering and screw re-tightening until the specified torque is reached. Fill all holes with grease to exclude dirt.

>>REMOVE
1) Remove all screws. Lightly oil thread and point of set screws, or thread and under head of cap screws.
2) Insert screws into removel holes that are threaded on the bush side. In sizes where washers are found under screws heads, be sure to use these washers.
3) Tighten screws alternately until bush is loosened in hub and then remove the coplete assembly. If bush does not loosen immediately tap on hub.
 

Packaging & Shipping

Company Profile

 

ZheJiang Haorongshengye Electrical Equipment Co., Ltd.

1. Was founded in 2008
2. Our Principle:

“Credibility Supremacy, and Customer First”
3. Our Promise:

“High quality products, and Excellent Service”
4. Our Value:

“Being Honesty, Doing the Best, and Long-lasting Development”
5. Our Aim:

“Develop to be a leader in the power transmission parts industry in the world”
 

6.Our services:

1).Competitive price

2).High quality products

3).OEM service or can customized according to your drawings

4).Reply your inquiry in 24 hours

5).Professional technical team 24 hours online service

6).Provide sample service

Main products

Machines

 

Exbihition

 

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Pulley Sizes: SPA/Spb/Spc/Spz
Manufacturing Process: Casting
Material: Carbon Steel
Surface Treatment: Polishing
Application: Chemical Industry, Grain Transport, Mining Transport, Power Plant
Bore Size: Demands
Samples:
US$ 100/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

taper bush

Can I find advice on selecting pulley bushings for high-speed applications?

Yes, you can find advice on selecting pulley bushings for high-speed applications. Choosing the right pulley bushings is crucial for ensuring smooth and reliable operation in high-speed applications. Here are some sources where you can find advice on selecting pulley bushings:

  • Engineering Resources: Engineering resources such as technical journals, engineering handbooks, and online publications often provide valuable information on selecting pulley bushings for high-speed applications. These resources may cover topics such as material selection, lubrication requirements, and design considerations. Examples of engineering resources include publications from professional organizations like the American Society of Mechanical Engineers (ASME), Society of Automotive Engineers (SAE), or engineering publications like Mechanical Engineering Magazine.
  • Manufacturer Recommendations: Pulley manufacturers or suppliers often provide guidance on selecting bushings for their specific pulley products. Check the manufacturer’s website, product catalogs, or technical documentation for information on recommended bushing types, sizes, and specifications for high-speed applications. Manufacturers may also offer technical support or application engineering services to assist you in selecting the appropriate pulley bushings.
  • Online Forums and Discussion Groups: Online forums and discussion groups related to mechanical engineering, industrial applications, or pulley systems can be valuable sources of advice. Engage with professionals and enthusiasts in these communities to seek advice on selecting pulley bushings for high-speed applications. Members with experience in similar applications may share their insights, recommendations, and lessons learned.
  • Industry Experts and Consultants: Consulting with industry experts or engineers specializing in mechanical power transmission systems can provide valuable guidance. These experts have extensive knowledge and experience in selecting pulley components for high-speed applications. Consider contacting engineering consulting firms or reaching out to professionals through industry networks or conferences.

When seeking advice on selecting pulley bushings for high-speed applications, it’s important to consider the specific requirements of your application, such as rotational speed, load, environmental conditions, and system compatibility. Consulting reliable engineering resources, manufacturer recommendations, online forums, and industry experts will help you make informed decisions and choose pulley bushings that can withstand the demands of high-speed applications, ensuring optimal performance and reliability.

taper bush

Are there pulley bushings designed for use in applications with heavy radial loads?

Yes, there are pulley bushings specifically designed for use in applications with heavy radial loads. Pulley bushings play a critical role in transmitting power and supporting rotating shafts in various machinery and equipment. In applications where heavy radial loads are present, it is essential to select bushings that can withstand the forces and provide reliable performance. Here are some types of pulley bushings commonly used in applications with heavy radial loads:

  • Tapered Bushings: Tapered bushings are designed to handle heavy radial loads and are commonly used in applications such as belt and chain drives. These bushings have a tapered shape that allows for precise positioning and secure clamping onto the shaft. The tapered design helps distribute the radial load evenly across the bushing, minimizing stress concentrations.
  • Spherical Bushings: Spherical bushings, also known as spherical plain bearings or spherical rod ends, are designed to accommodate heavy radial loads and misalignment. These bushings have a spherical inner ring that allows for angular movement and compensates for shaft misalignment. Spherical bushings are often used in applications where there is a combination of radial and axial loads.
  • Roller Bearings: In some cases, roller bearings are used as pulley bushings in applications with heavy radial loads. Roller bearings are capable of handling high radial loads due to their rolling element design, which distributes the load over a larger contact area. Depending on the specific requirements, different types of roller bearings such as cylindrical, tapered, or spherical roller bearings may be used as pulley bushings.
  • Self-Lubricating Bushings: Self-lubricating bushings, also known as plain bearings or sleeve bearings, are another option for applications with heavy radial loads. These bushings are designed with a low-friction liner that provides lubrication between the bushing and the shaft, reducing wear and friction. Self-lubricating bushings can handle radial loads and are often used in applications where maintenance-free operation is desired.

When selecting pulley bushings for applications with heavy radial loads, it is important to consider factors such as load capacity, material strength, lubrication requirements, and compatibility with the mating components. The manufacturer’s specifications and technical documentation should provide information on the load ratings and performance characteristics of the bushings. It’s also advisable to consult with industry experts or engineers who specialize in power transmission systems to ensure the appropriate selection of bushings for your specific application.

It’s worth noting that the suitability of pulley bushings for heavy radial loads may vary depending on the specific application requirements and operating conditions. Consulting with the bushing manufacturer or seeking professional advice can help ensure optimal performance and reliability in applications with heavy radial loads.

taper bush

Are there video tutorials on installing and removing pulley bushings?

Yes, there are video tutorials available that provide step-by-step instructions on installing and removing pulley bushings. These tutorials can be helpful resources for understanding the process and ensuring proper installation and removal. Here are some ways to access these video tutorials:

1. Online Video Sharing Platforms:

– Visit popular online video sharing platforms such as YouTube or Vimeo. These platforms have a vast collection of instructional videos, including tutorials on various mechanical tasks, including installing and removing pulley bushings.

– Use the search function on these platforms and enter keywords such as “pulley bushing installation” or “pulley bushing removal” to find relevant video tutorials. You can further refine your search by specifying the type of bushing or the specific equipment you are working with.

2. Manufacturer or Supplier Websites:

– Check the websites of pulley manufacturers or power transmission suppliers. Many of them provide resources such as video tutorials or guides on the installation and removal of their products.

– Navigate to the support or resources section of their websites and look for videos specifically related to pulley bushings. These videos are often created by experts who are familiar with the product and can provide valuable insights.

3. Online Mechanical Forums and Communities:

– Join online forums or communities that focus on mechanical topics, such as DIY or engineering forums. These platforms often have members who are willing to share their knowledge and experiences.

– Post a question or search within the forum for discussions or threads related to pulley bushing installation and removal. Members may provide links to helpful video tutorials or share their own experiences and tips.

4. Manufacturer or Supplier Support:

– Reach out to the manufacturer or supplier of the pulley bushings you are working with. They may have dedicated technical support or customer service teams that can provide guidance and direct you to relevant video tutorials.

– Contact them through their website, email, or phone and explain your specific needs. They can assist you in finding the appropriate resources to guide you through the installation and removal process.

Video tutorials can be valuable visual aids when it comes to understanding the intricacies of installing and removing pulley bushings. They often provide practical demonstrations, tips, and troubleshooting advice. By following these tutorials, you can ensure that the installation and removal procedures are carried out correctly, minimizing the risk of damage and ensuring optimal performance of your pulley system.

China Standard in Stock Cast Iron Steel Taper Bushing for Belt Pulley   manufacturer China Standard in Stock Cast Iron Steel Taper Bushing for Belt Pulley   manufacturer
editor by CX 2024-05-03

China Custom Factory Direct Sale High Precision Custom Steel Timing Belt Pulley pulley design

Product Description

Quick Details

 

Applicable Industries:

Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Construction works , Energy & Mining, Other

Customized support:

OEM, ODM

Part name : ISO 5294 L 14 teeth timing belt pulley Surface treatment: Black Coating
Material: C45 Steel Brand Name:REACHJY
Application:power transmission Inspection: 100%
Certification:ISO Place of Origin:ZheJiang , China
   
   

Certification: ISO
Pulley Sizes: ISO 5294 L
Manufacturing Process: Machine
Material: C45 Steel
Surface Treatment: Black Coating
Application: Chemical Industry, Grain Transport, Mining Transport, Power Plant
Samples:
US$ 50/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

pulley

What is a pulley?

Pulleys are shafts or wheels on a shaft that support the movement and change of direction of a taut cable. The pulley also transfers power from the shaft to the cable. A simple pulley is used to raise the school flag. Read on to learn about the basic types of pulleys. We also covered the use of pulleys in everyday life. Read on to learn more about this important mechanical part.

composite pulley

A composite pulley is a mechanical system where two or more pulleys and ropes are connected together. It reduces the force required to lift the load because the force is divided by the distance of each pulley. Distance is equal to the mass of the object. Composite pulleys are a common mechanical system on sailboats. Composite pulleys can be used to lift heavy equipment such as sails.
The compound pulley unit consists of two pulleys, one fixed and the other movable. The fixed pulley is fixed overhead, while the movable pulley is connected to the load by a chain. The lift applies force to the other end of the rope. Anchor points are attached to fixed joists, ceiling joists or sturdy branches. The chain should be long enough to support the load during lifting.
Composite pulleys can be made from a variety of materials. Some are fixed and remain fixed. Others are detachable. The composite pulley combines the advantages of both types, making it a versatile tool. In the table below, these three types of pulleys are compared. It’s easy to see which one is best for your needs. The right choice depends on your specific needs and budget.
The compound pulley system consists of two fixed pulleys and one movable pulley. The compound pulley system multiplies the force by a factor of 2. The compound pulley system is particularly suitable for heavy loads and is ideal for construction sites. Workers apply less than half the load force on the composite pulley, significantly reducing the force required. This is a major benefit for many people.

Fixed pulley

Fixed pulleys are fixed gears of fixed length that are mounted on solid objects. There are many different types of pulley systems. Some cooperate with each other, but not “fixed”.
Fixed pulleys can be used for a variety of purposes. One application is to lift small objects. They have a one-to-one mechanical advantage. Often, a single pulley can lift small loads. The force required to lift a single fixed pulley remains the same. They are usually used to lift lighter objects. They can even be attached to buckets used to draw water from wells.
While single fixed pulleys have desirable mechanical advantages, they are not suitable for force multipliers. Because their mechanical advantage diminishes over time, they are not effective force multipliers. They are used to redirect work so that it can be applied in the most convenient direction. This mechanical advantage is the main advantage of fixed pulleys and the most common way of moving objects. They have several benefits, including the ability to increase the speed of moving objects.
Another application for fixed pulleys is lifting supplies. A scaffold can weigh more than one and can be directly hoisted. In order to facilitate the transportation of materials, fixed pulleys are usually installed on the top of the scaffolding on construction sites. Then thread the rope through the edge of the groove that holds the pulley. The fixed pulley exerts the same force on the pull side as on the push side. The same is true for moving objects with fixed pulleys.
pulley

moving pulley

A movable pulley is a device whose part is fixed to another object, usually a rod or beam. The movable part moves with the load, making the load feel lighter. This is a useful tool for those who need to carry heavy items such as large bags. The advantages of moving pulleys are many. Here are some of them. Read on to learn more about them.
One of the most common uses of movable pulley systems is climbing high objects. Climbers act as pulley loads and pull ropes to lift objects. Eventually, when the traction stops, the climber descends. However, it is still a useful tool in other situations. The movable pulley system can help you climb the tallest objects or lift them to level surfaces.
Another example of movable pulleys is in industry. Depending on the load, movable pulleys make handling and moving loads easier. You can use them in a variety of applications in manufacturing and industry, including cleaning. For example, the American flag is raised and lowered every day. Removable pulleys are a handy tool when buildings need cleaning.
If you’re not sure whether a task requires a pulley, a zipline might be a good option. Connect the two ends of the rope and the pulley will move along the rope, then attach the rope to the metal cable. The load is the person holding the pulley, and the force comes from the attachment on the other end of the rope. There are two types of live pulleys: simple pulleys with just one wheel and live pulleys with many ropes attached.

School flag raised with simple pulleys

How is the school flag raised? It is pulled up by a rope attached to a pulley at the top of the pole. When the rope is pulled, the pulley turns, raising the flag. A pulley is a simple mechanism that helps people move heavier objects with ease. The rope must be securely attached to the pulley to keep the flag stable.
A simple pulley is a spinning wheel with grooves on one side and ropes on the other. The rope can be any length and the wheels can be any size. The rope has to go through the groove and the load is attached to the other end of the rope. Simple pulleys are pulleys with fixed shafts. An example is the wheel on a school flagpole.
A simple pulley system consists of a primary pole, a secondary pole and an outer member. The primary flagpole is connected to the track by a detour, while the secondary flagpole is connected to the track by a pipe. There is a groove on one side of the track, which passes through the inner cavity of the flagpole. An open track at the upper end of the track connects the two parts of the pulley.
A simple pulley can be used for many purposes. This is a useful machine that can be used to raise the flag. Among other things, it can be used in clothing lines, bird feeders, and even roofers. And, of course, you can use the pulley to raise the flag. Its versatility makes it an essential part of school decor.
pulley

cast iron pulley

If you are looking for pulleys for your machine, you may come across cast iron pulleys. They are usually cheap and available in a variety of sizes. The rim is held in place by a mesh attached to a central boss. The arms and spokes can be straight or curved, but most are oval. There are many uses for this type of pulley.
You might wonder why the arms of cast iron pulleys are so curved. Bent arms tend to yield rather than break. Cast iron pulleys are usually round with a slight bump on the rim, which helps keep the belt centered on the rim as it moves. On a 300mm diameter pulley, the bumps may be as small as 9mm.

China Custom Factory Direct Sale High Precision Custom Steel Timing Belt Pulley   pulley design	China Custom Factory Direct Sale High Precision Custom Steel Timing Belt Pulley   pulley design
editor by CX