China Hot selling Jew Caster Small Dual Bearings Wheel Metal Pulley Wheel with Bearing with Good quality

Product Description

We offer a wide variety of precision machining capabilities including high quality precision machined parts,
Mechanical assemblies,and cutom fabrication for automobile,textile machinery,construction machinery etc.
Our manufacturing and process capabilities are ISO9000 Certified.

Heavy duty needle roller bearing is composed of 1 or 2 rings and needle roller group with cage. According to different applications, it can be divided into bearings with or without inner rings. Therefore, the CHINAMFG ring needle roller bearing can meet the requirements of light weight, small space occupation and high power transmission. The CHINAMFG ring needle roller bearing has smaller volume and higher bearing capacity. Structure type outer ring double rib (or double lock ring) with cage needle roller bearing Na, NAV, NKI type can be respectively installed with inner ring and outer ring (with lock ring, full set of needle roller and cage), with high authorized speed, which can be divided into single row and double row. If the shaft cannot be used as a raceway, i.e. if it is not possible or economical to grind the shaft for hardening, this type of needle roller bearing with inner ring can be used


Characteristic of heavy duty needle roller bearing





Basic Load Ratings






















NK 5/10TN










NK 6/10TN










NK 6/12TN










NK 7/10TN










NK 8/12TN










NK 9/12TN










Custom size requirement are also available



Our advantage:
1.The original 100% factory, more than 10 years’ production experience
2.Produce and process products according to your drawings and requirement.
3.All kinds of surface treatment available,such as anodizing,power coating,painting,polishing and etc.
4.Our professional R&D and QC team can strictily control the product quality to meet your requirement.
5.Our products are of high quality at cheap price,and delivered on time.

Manufacturing strength & Vehicle processing line

1.Professional operators

2.Adopting advanced CNC machine tools in Japan

3.Totally enclosed production workshop

4.Experienced managers

5.Digital control production line

6.Advanced level of technology



Production Detection

1.Complete testing facilities

2.Perfect measurement methods

3.Perfect production detection methods

4.Strong QC team,conduct comprehensive quality control

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Customized: Customized
Certification: Ts16949
Standard Parts: Customized
Universal: Customized
Type: Customized
Material: Customized
US$ 0/Piece
1 Piece(Min.Order)

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Customized Request

small pulley

What are some real-world examples of small pulley applications in various settings?

Small pulleys find numerous applications in various real-world settings, contributing to the functionality and efficiency of different systems and devices. Here are some examples of how small pulleys are utilized in different industries and everyday situations:

1. Automotive Industry:

– Small pulleys are used in automotive engines to drive various components, such as the alternator, power steering pump, water pump, and air conditioning compressor, through the serpentine belt system. These pulleys help transfer power from the engine to the respective accessories, enabling their operation.

2. Gym and Fitness Equipment:

– Small pulleys are extensively used in gym and fitness equipment, such as cable machines, weight stacks, and exercise pulley systems. They guide the cables and provide resistance, allowing users to perform a wide variety of exercises targeting different muscle groups. The pulleys enable smooth and controlled movement, enhancing the effectiveness of the workouts.

3. Construction and Rigging:

– In construction and rigging applications, small pulleys are used to create mechanical advantage and facilitate the lifting and moving of heavy loads. They are employed in cranes, hoists, and elevators to lift materials or provide leverage for pulling operations. Small pulleys are also used in block and tackle systems to multiply the applied force.

4. Industrial Machinery and Manufacturing:

– Small pulleys are incorporated into various industrial machinery and manufacturing processes. They are used in conveyor systems to guide and transport materials along production lines. Small pulleys also play a role in printing machines, packaging equipment, and textile machinery, helping to control the movement of belts, rollers, and other components.

5. Window Blinds and Shades:

– Small pulleys are employed in window blinds and shades to enable smooth and easy operation. They are used to guide the lift cords or strings, allowing users to raise or lower the blinds or adjust the angle of the slats. The small pulleys ensure the cords or strings move without tangling and provide the desired control over light and privacy.

6. Garage Doors:

– Small pulleys are utilized in garage door systems to facilitate the opening and closing of the doors. They are part of the door’s lifting mechanism and help guide the cables or chains connected to the door panels. The small pulleys ensure smooth and balanced movement, allowing for effortless operation of the garage doors.

7. Sailboats and Sailing Equipment:

– Small pulleys, known as blocks, are extensively used in sailboats and sailing equipment. They are employed to redirect and adjust the tension of lines and halyards, enabling sailors to control the sails and maneuver the boat effectively. Small pulleys are crucial in various rigging systems on sailboats, contributing to efficient sail handling.

8. Home DIY Projects:

– Small pulleys can be found in various home DIY projects and applications. They are used in simple mechanisms, such as homemade elevators or dumbwaiters, to facilitate vertical movement. Small pulleys are also utilized in homemade exercise equipment, storage systems, or small-scale mechanical devices for hobbyists and inventors.

These are just a few examples highlighting the diverse applications of small pulleys in different settings. Small pulleys contribute to the smooth operation, controlled movement, and mechanical advantage in various industries, everyday devices, and DIY projects, enhancing efficiency and functionality.

small pulley

How do small pulleys impact the performance of hobbyist and craft tools?

Small pulleys play a significant role in influencing the performance of hobbyist and craft tools. The proper selection and use of pulleys can affect various aspects of tool performance, including speed, torque, precision, and overall functionality. Here is a detailed explanation of how small pulleys impact the performance of hobbyist and craft tools:

1. Speed Control:

– Small pulleys, when used in conjunction with belts or cables, can be employed to control the speed of rotating components in hobbyist and craft tools. By changing the size ratio between the driving and driven pulleys, different rotational speeds can be achieved. This allows users to adjust the tool’s speed based on the specific task or material being worked on, providing versatility and control.

2. Torque Transmission:

– Pulleys are responsible for transmitting torque from the power source, such as an electric motor, to the tool’s working components. The size and configuration of the pulleys influence the torque output and the force applied to the workpiece. By selecting pulleys with appropriate diameters and groove configurations, hobbyist and craft tools can be optimized to deliver the necessary torque for specific applications, improving efficiency and performance.

3. Power Conversion:

– Small pulleys can be used in systems that convert one type of power or motion into another. For example, hobbyist tools may utilize pulleys in conjunction with gears or other mechanisms to convert rotary motion into linear motion or vice versa. This enables the tool to perform tasks such as cutting, drilling, or sanding with precision and accuracy, enhancing the overall performance and functionality.

4. Belt Tension and Grip:

– Proper belt tension and grip are crucial for the effective operation of hobbyist and craft tools that utilize pulleys. The design and selection of pulleys impact the belt’s engagement and grip on the pulley surface. Well-designed pulleys provide sufficient grip, preventing slippage and ensuring the transmission of power from the driving pulley to the driven pulley. This results in reliable and consistent performance of the tool.

5. Smooth Operation:

– Pulleys, when equipped with appropriate bearings, contribute to the smooth and quiet operation of hobbyist and craft tools. High-quality bearings reduce friction and minimize vibration, resulting in reduced noise levels and improved user experience. Smooth operation enhances precision and control, especially for tasks that require fine detailing or delicate work.

6. System Integration:

– Small pulleys serve as integral components in the overall design and functionality of hobbyist and craft tools. They are often used in conjunction with other mechanisms, such as belts, gears, or linkages, to create a synchronized and efficient system. Proper integration of pulleys ensures smooth coordination and interaction between various components, maximizing the tool’s performance and reliability.

7. Component Sizing and Compactness:

– Small pulleys are particularly beneficial for hobbyist and craft tools where size and compactness are important factors. By utilizing small pulleys, the overall size of the tool can be minimized without compromising performance. This is especially advantageous for handheld or portable tools where weight and maneuverability are critical considerations.

8. Customization and Adaptability:

– Small pulleys offer customization options, allowing hobbyists and crafters to tailor the tool’s performance to their specific needs. By selecting pulleys with different diameters, profiles, or materials, users can optimize the tool for specific applications or materials. This adaptability enhances versatility and expands the range of tasks that can be accomplished using the tool.

Overall, small pulleys have a significant impact on the performance of hobbyist and craft tools. They influence speed control, torque transmission, power conversion, belt tension and grip, smooth operation, system integration, component sizing and compactness, as well as customization and adaptability. By understanding the role of small pulleys and selecting appropriate pulleys for specific applications, hobbyists and crafters can enhance the performance and functionality of their tools, enabling them to achieve desired results with precision and efficiency.

small pulley

In which machinery and systems are small pulleys commonly used?

Small pulleys find widespread usage in a variety of machinery and systems across different industries. Their compact size, versatility, and ability to achieve higher speed ratios make them suitable for numerous applications. Here are some machinery and systems where small pulleys are commonly used:

1. Handheld Power Tools:

– Small pulleys are frequently employed in handheld power tools such as drills, sanders, and grinders. They are integral components in the motor drive systems of these tools, enabling the transfer of power from the motor to the tool head. Small pulleys help achieve the desired speed and torque conversions necessary for different tasks.

2. Robotics and Automation:

– Small pulleys play a vital role in robotics and automation systems. They are used in robot joints, actuators, and grippers, facilitating precise motion control. Small pulleys contribute to the smooth and accurate movement of robots, allowing them to perform various tasks with precision and efficiency.

3. Conveyor Systems:

– Small pulleys are commonly found in conveyor systems used in industries such as manufacturing, logistics, and mining. They are utilized in the pulley assemblies of belt conveyors, where they help drive the belt and facilitate material transportation. Small pulleys allow for effective power transmission and precise control of conveyor belts.

4. Printing and Paper Handling Equipment:

– Small pulleys are extensively used in printing presses, copiers, and paper handling equipment. They assist in driving paper feed mechanisms, controlling tension, and ensuring precise movement of paper or other printable media. Small pulleys contribute to the smooth operation and accurate registration of printed materials.

5. Medical Equipment:

– Small pulleys are essential components in various medical equipment and devices. They are used in surgical instruments, diagnostic machines, and rehabilitation equipment. Small pulleys enable controlled movement, precise adjustments, and accurate positioning, contributing to the effectiveness of medical procedures and therapies.

6. Automotive Systems:

– Small pulleys have widespread usage in automotive systems. They can be found in engine components such as the timing belt system, serpentine belt system, and accessory drive systems. Small pulleys help ensure proper synchronization of engine components, drive auxiliary systems, and transfer power efficiently within the vehicle.

7. Textile Machinery:

– Small pulleys are integral to various textile machinery, including sewing machines, weaving looms, and knitting machines. They assist in controlling fabric feed, driving moving parts, and enabling precise tension adjustments. Small pulleys contribute to the smooth operation and accurate fabric handling in textile manufacturing processes.

8. HVAC Systems:

– Small pulleys are used in heating, ventilation, and air conditioning (HVAC) systems. They can be found in fans, blowers, and air handling units, where they help drive the rotating components and ensure efficient airflow. Small pulleys contribute to the performance and reliability of HVAC systems.

9. Laboratory Equipment:

– Small pulleys are utilized in various laboratory equipment, such as centrifuges, mixers, and analytical instruments. They assist in achieving precise rotational speeds, facilitating sample processing and analysis. Small pulleys contribute to the accurate and controlled operation of laboratory equipment.

These are just a few examples of the machinery and systems where small pulleys are commonly used. Their compact size, versatility, and ability to provide precise motion control make them indispensable components in a wide range of applications across industries.

China Hot selling Jew Caster Small Dual Bearings Wheel Metal Pulley Wheel with Bearing   with Good quality China Hot selling Jew Caster Small Dual Bearings Wheel Metal Pulley Wheel with Bearing   with Good quality
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