China Best Sales Heavy Duty Sliding Door Roller Wheel Window Pulley with High Quality Bearing belt pulley

Product Description

HangZhou Suijin machinery Technology Co,.Ltd is a profational manufacturer in HangZhou city, our main process is investment casting/precision casting and machining, for casting process, we have 2 kinds of production line, 1 is precision casting, another is water glass with competitive cost.

Apart from the investment casting workshop and machine workshop, we also provide the CHINAMFG parts to meet the requirement for varial demand from our customer.

Our company got the ISO9001 and IATF16949 certification, and aslo we are awarded the new high-tech enterprice by Chinese government, and we have more than 20 patent.

 • More than 10 years experience on casting and machining
 • Advanced inspection equipment to ensure the tolerance
 • Flexible PO QTY to meet customer demand
 • Professional engineers in casting and machining
 • Competitive price and exllent parts quality
 • Nearby HangZhou port, on-time delivery


HangZhou suijin machinery technology can provide the ODM&OEM service for customer, and main is ODM, we can manufacturing the customized parts according to 2D&3D, we have professional R&D team can take part in ealier development phase of the project.


Avaliable Material
Carbon Steel  Alloy Steel High Chromium Cast Iron Low carbon steel
Stainless Steel Duplex Stainless Steel Steel bar Ductile Cast Iron
Surface treatment
Heat Treatment  Zinc Coating Blackening Mirror Polishing
Satin Polishing Electrolytic Polishing Shot Peening DACROMET


 • Exhaust inlet/outlet cone                                 • Shift sleeve                                 • Fuel rail bracket  
 • Tempreture sensor boss                                  • Mounting Brackets                      • Oxygen sensor boss 
 • Brake balance block                                        • EGR sensor boss                              • Exhaust valve body


 • Mounting Base                                • Mounting plate                                                 • Bearing Covers   
 • Coupling                                          • Grount sleeve                                                  • Sprockets
 • Handle                                             • law glass curtain wall accessories                  • Side Plates                                                                                

 • Tooth Blocks                                         • Track shoes                                             • Bucket Teeth   
 • Track Links                                           • Clamping                                                 • Mounting Brackets
 • Lifting Eyes                                           • Quick Joint                                              • Trencher Tooth     
 • Star handle                                              • Door hinge                                          • Folding Dock Cleat   
 • Mirror Polished Mooring                          • Hollow base boat rope cleat               • Mounting Brackets


 • Valve body                                   • Explosion-proof valves                              • Pipe fitting              

The casting part is wildly use in the industries, such as rail&transit parts, bicycle parts, casting impeller, food machine sorting components, solar mounting system parts, container safety parts, Electronic lock body, robot parts and so on, we have more than 20 patents related to this kinds of project in production.    


Our company also equiped advance inspection equipment to meet the inspection requirement of the parts, so that we can sure the part can have a good quality.


Magnetic defect inspection Spectrometer HB hardness inspection Mechanical inspection
Ultrasonic defect inspection Roughness tester HR hardness inspection CMM inspection
Metallographic detector X-ray inspection Dye penetrant inspection 100% Thread inspection


Q1 Are you factory or trading company?
A1 We are factory located in HangZhou city, China
Q2 What kinds of language is avaliable?
A2 English, Chinese, except email cummunication, we are ok with video meeting and calling.
Q3 How should I place an order?
A3 We are receive the PO and production drawing by email.
Q4 Which shipping methed is ok for you?
A4 Normally shipping by sea and train is use for mass production order delivery.
DHL,TNT,FedEx, UPS,EMS air shipment is use for sample delivery.
Q5 How can I contact you?
A5 You can contact us by email, and also we can chat by Skype, Teams, WhatsApp, Facebook.
Q6  What kinds of drawing format can be use?
Q7 Which packing material do you use for sea shipping?
A7 For sea shipping, we will packaging with European standard wooden pallet.
The parts will packing with PE bag inside the carton box.
Q8 How do you deal with the RFQ?
A8 Sales receiving the RFQ—Feasiblity study meeting with R&D engineer—Feed back technical issues with Customer—Sales quoted

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Casting Method: Thermal Gravity Casting
Process: CNC Machining
Molding Technics: Gravity Casting


Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

bearing pulley

How do bearing pulleys compare to other types of pulleys in various applications?

Bearing pulleys offer several advantages and considerations compared to other types of pulleys when used in various applications. Here is a comparison of bearing pulleys with other types of pulleys:

1. Friction and Efficiency:

Bearing pulleys, equipped with high-quality bearings, minimize friction and offer higher efficiency compared to plain or bushing pulleys. The low friction reduces energy loss and improves the overall performance of the system, especially in applications where power transmission efficiency is crucial.

2. Load Capacity:

Bearing pulleys generally have higher load-carrying capacities compared to plain or bushing pulleys. The bearings can handle larger radial and axial loads, making bearing pulleys suitable for applications that involve heavy loads or high tension requirements.

3. Smooth Operation:

The presence of bearings in bearing pulleys ensures smoother operation and reduced vibration compared to other types of pulleys. This smooth operation contributes to improved system performance, reduced wear on belts and other components, and quieter operation.

4. Maintenance and Lifespan:

Bearing pulleys often require less maintenance compared to plain or bushing pulleys. Bearings are typically designed for longer service life and can withstand higher speeds and operating conditions. Proper lubrication and periodic maintenance are still necessary for optimal performance, but the overall maintenance requirements are generally lower.

5. Precision and Alignment:

Bearing pulleys offer better precision and alignment compared to other types of pulleys. The bearings provide stable and accurate rotational movement, minimizing belt misalignment and reducing the risk of premature wear or belt slippage. This precision is crucial in applications where precise positioning or synchronization is required.

6. Cost Considerations:

In terms of cost, bearing pulleys may have a higher initial investment compared to plain or bushing pulleys. However, considering their longer lifespan, reduced maintenance requirements, and improved performance, bearing pulleys can offer better long-term cost-effectiveness in many applications.

It’s important to note that the suitability of bearing pulleys versus other types of pulleys depends on the specific application requirements, load conditions, operating environment, and budget constraints. Consulting with industry experts and considering the specific needs of the application can help in selecting the most appropriate type of pulley for optimal performance and efficiency.

bearing pulley

Are there specific safety considerations when working with bearing pulley systems?

Yes, there are specific safety considerations that should be taken into account when working with bearing pulley systems. These considerations help prevent accidents, injuries, and equipment damage. Here are some important safety considerations when working with bearing pulley systems:

1. Lockout/Tagout Procedures:

Prior to performing any maintenance or repair tasks on a bearing pulley system, it is crucial to follow lockout/tagout procedures. This involves isolating the power source, de-energizing the system, and securing it with lockout devices or tags to prevent accidental startup or release of stored energy.

2. Personal Protective Equipment (PPE):

Workers should wear appropriate personal protective equipment when working with bearing pulley systems. This may include safety glasses, gloves, hearing protection, and steel-toed footwear, depending on the specific hazards present in the work environment.

3. Training and Competence:

Employees involved in the operation, maintenance, or repair of bearing pulley systems should receive proper training and demonstrate competence in their tasks. They should be familiar with the equipment, understand safety procedures, and be aware of potential hazards and risks associated with working with bearing pulleys.

4. Regular Maintenance and Inspection:

Regular maintenance and inspection of bearing pulley systems are essential to ensure their safe and reliable operation. This includes checking for wear, proper alignment, and lubrication of bearings, as well as inspecting belts, pulleys, and other components for signs of damage or deterioration.

5. Proper Guarding:

Bearing pulley systems should be properly guarded to prevent accidental contact with moving parts. Guards and barriers should be in place to protect workers from entanglement, pinch points, and other hazards associated with rotating pulleys and belts.

6. Risk Assessment and Hazard Mitigation:

Before working with bearing pulley systems, a thorough risk assessment should be conducted to identify potential hazards and implement appropriate hazard mitigation measures. This may involve implementing safety interlocks, providing emergency stop devices, or implementing safety protocols specific to the equipment and work environment.

It is important to note that the above safety considerations are general guidelines, and specific safety requirements may vary depending on the industry, equipment, and local regulations. Employers and workers should always refer to relevant safety standards and consult with safety professionals to ensure compliance and promote a safe working environment.

bearing pulley

What is a bearing pulley, and how does it function in mechanical systems?

A bearing pulley is a type of pulley that incorporates bearings to reduce friction and facilitate smooth rotation. It is commonly used in mechanical systems to transmit motion, change the direction of force, or provide mechanical advantage. Here is a detailed explanation of what a bearing pulley is and how it functions:

1. Definition and Components:

A bearing pulley consists of two main components: the pulley wheel and the bearing. The pulley wheel is a circular disc with a groove or channel that allows a cable or belt to pass through. The bearing, typically a ball bearing or roller bearing, is integrated into the pulley wheel’s hub. It provides support and enables the pulley wheel to rotate smoothly with minimal friction.

2. Friction Reduction:

The primary function of a bearing pulley is to reduce friction between the pulley wheel and the axle or shaft on which it rotates. The bearings within the pulley create a low-friction interface, allowing the pulley wheel to spin freely. This friction reduction is essential for efficient power transmission and smooth operation of mechanical systems.

3. Load Distribution:

Bearing pulleys distribute the load evenly across the bearings, preventing excessive wear and minimizing the risk of component failure. The bearings bear the weight and forces applied to the pulley, ensuring that the load is distributed over a larger surface area. This load distribution capability enhances the longevity and reliability of the pulley system.

4. Directional Change:

Bearing pulleys are used to change the direction of force or motion in mechanical systems. By routing a cable or belt through the pulley wheel’s groove, the pulley can redirect the force applied to it. For example, a belt passing over a bearing pulley can change the direction of rotation or transmit force to a different location, enabling the desired mechanical operation.

5. Mechanical Advantage:

Bearing pulleys can provide mechanical advantage by altering the relationship between force and distance. By increasing or decreasing the diameter of the pulley wheel, the mechanical advantage can be adjusted. A larger diameter pulley provides a greater mechanical advantage, allowing a smaller input force to produce a larger output force. This feature is commonly utilized in various applications, such as lifting systems or tensioning mechanisms.

6. Application Areas:

Bearing pulleys find applications in numerous mechanical systems and devices. They are commonly used in conveyor systems, lifting and hoisting equipment, gym equipment, automotive engines, agricultural machinery, and many other industrial and commercial applications. The smooth rotation and friction reduction offered by bearing pulleys make them indispensable components in these systems.

Overall, a bearing pulley is a mechanical component that incorporates bearings to reduce friction and enable smooth rotation. It plays a crucial role in transmitting motion, changing the direction of force, and providing mechanical advantage in various mechanical systems and devices.

China Best Sales Heavy Duty Sliding Door Roller Wheel Window Pulley with High Quality Bearing   belt pulley	China Best Sales Heavy Duty Sliding Door Roller Wheel Window Pulley with High Quality Bearing   belt pulley
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