Product Description

JWB Series Speed Variator 
1. Features:

 JWB-X  type

  • Sizes: ≥04
  • Power up to 1.5 kW or more
  • Cases in RAL 5571 blue cast iron
  • Shafts: case hardened and tempered steel.
  • Internal components: heat-treated steel
  • Output speed with 4 pole(1400r/min) motors: 2-10r/min;4.7-23.5r/min;15-75r/min;20-100r/min, 28-140r/min, 30-150r/min;40-200r/min;60-300r/min;80-400r/min;100-500r/min;190-950r/min.
  • Output Torque value max 1002Nm
  • Silent, vibration-free running
  • Bidirectional rotation
  • Control handwheel positionable on either side
  • Slipping speed to max load at 5% 
  • Regulation sensibility: 0,5 rpm 
  • Painted with blue epoxy-polyester powder 

 JWB-X B type

  • Sizes:01,02,03 and 04
  • Power up to 1.5 kW or less
  • Cases in die-cast aluminium alloy
  • Shafts: case hardened and tempered steel.
  • Internal components: heat-treated steel
  • Output speed with 4 pole(1400r/min) motors: 2r/min-20r/min;4.7r/min-23.5r/min;6.5-32.5r/min, 8-40r/min, 9-45r/min, 13-65r/min, 15r/min-75r/min;18-90r/min, 25-125r/min, 28r/min-140r/min;40r/min-200r/min;60r/min-300r/min;80r/min-400r/min;100r/min-500r/min;190r/min-950r/min.
  • Output Torque value max 795 Nm
  • Silent, vibration-free running
  • Bidirectional rotation
  • Control hand wheel positionable on either side
  • Slipping speed to max load at 5%
  • Regulation sensibility: 0,5 rpm
  • Painted with blue epoxy-polyester powder 

2. Technical parameters


Type Output Torque Output Shaft Dia.   Output Speed Range 2rpm-950rpm
SWB01 2.6-1.6N.m φ11 Applicable Motor Power 0.18kW-7.5kW
SWB02 258-1.8N.m φ14,φ24,φ28,φ32  
SWB03 426-4N.m φ24,φ28,φ38 Input Options With Inline AC Motor
SWB04 795-8N.m φ28,φ38,φ42 With IEC Motor
SWB05 535-16N.m φ38,φ48,φ55 With Input Shaft
SWB06 1002-40N.m φ42,φ55,φ70 With Input Flange

About Us

ZheJiang CHINAMFG Drive Co.,Ltd,the predecessor was a state-owned military mould enterprise, was established in 1965. CHINAMFG specializes in the complete power transmission solution for high-end equipment manufacturing industries based on the aim of “Platform Product, Application Design and Professional Service”.
Starshine have a strong technical force with over 350 employees at present, including over 30 engineering technicians, 30 quality inspectors, covering an area of 80000 square CHINAMFG and kinds of advanced processing machines and testing equipments. We have a good foundation for the industry application development and service of high-end speed reducers & variators owning to the provincial engineering technology research center,the lab of gear speed reducers, and the base of modern R&D.

Our Team

Quality Control
Quality:Insist on Improvement,Strive for Excellence With the development of equipment manufacturing indurstry,customer never satirsfy with the current quality of our products,on the contrary,wcreate the value of quality.
Quality policy:to enhance the overall level in the field of power transmission  
Quality View:Continuous Improvement , pursuit of excellence
Quality Philosophy:Quality creates value

3. Incoming Quality Control
To establish the AQL acceptable level of incoming material control, to provide the material for the whole inspection, sampling, immunity. On the acceptance of qualified products to warehousing, substandard goods to take return, check, rework, rework inspection; responsible for tracking bad, to monitor the supplier to take corrective 
measures to prevent recurrence.

4. Process Quality Control
The manufacturing site of the first examination, inspection and final inspection, sampling according to the requirements of some projects, judging the quality change trend;
 found abnormal phenomenon of manufacturing, and supervise the production department to improve, eliminate the abnormal phenomenon or state.

5. FQC(Final QC)
After the manufacturing department will complete the product, stand in the customer’s position on the finished product quality verification, in order to ensure the quality of 
customer expectations and needs.

6. OQC(Outgoing QC)
After the product sample inspection to determine the qualified, allowing storage, but when the finished product from the warehouse before the formal delivery of the goods, there is a check, this is called the shipment inspection.Check content:In the warehouse storage and transfer status to confirm, while confirming the delivery of the 
product is a product inspection to determine the qualified products.

7. Certification.



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Application: Motor, Agricultural Machinery, Ceramic
Hardness: Hardened Tooth Surface
Installation: Vertical or Horizotal Type
Layout: Coaxial
Gear Shape: Planetary Conedisk Friction Type
Step: Stepless



Can variators be customized for specific industries or machinery configurations?

Yes, variators can be customized to meet the specific requirements of different industries and machinery configurations. Manufacturers of variators understand that different industrial applications may have unique needs in terms of load characteristics, operating conditions, control system integration, and other factors. As a result, they offer customization options to ensure optimal performance and compatibility. Here are some ways variators can be customized:

1. Load and Torque Ratings:

Variators can be customized to handle specific load requirements and torque ratings. Manufacturers can design and manufacture variators with different torque capacities to match the demands of different machinery or equipment. This customization ensures that the variator can effectively handle the expected load conditions without exceeding its torque limitations or compromising performance.

2. Speed Range:

Depending on the machinery configuration and application requirements, variators can be customized to provide the desired speed range. Manufacturers can adjust the gear ratios and design the variators to operate within specific speed ranges to match the speed requirements of the machinery. This customization allows for precise control and optimization of the machinery’s speed performance.

3. Environmental Considerations:

Variators can be customized to meet specific environmental conditions. Certain industries or machinery configurations may require variators that can withstand harsh environments, such as high temperatures, extreme humidity, or exposure to dust and debris. Manufacturers can incorporate enhanced protection and sealing mechanisms to ensure the variators can operate reliably in these challenging conditions.

4. Control System Integration:

Variators can be customized to integrate seamlessly with different control systems. Manufacturers can adapt the communication interfaces and protocols of the variators to match the specific requirements of the machinery’s control architecture. This customization allows for smooth integration with existing control systems, such as programmable logic controllers (PLCs) or other automation systems.

5. Mounting and Form Factor:

Variators can be customized to accommodate specific mounting configurations and form factors. Different machinery configurations may require variators with specific dimensions, mounting options, or shaft configurations to ensure proper installation and compatibility. Manufacturers can provide custom solutions to meet these specific mounting and form factor requirements.

6. Additional Features and Accessories:

Manufacturers can offer customization options by incorporating additional features and accessories into the variators. These can include specialized connectors, monitoring sensors, remote control capabilities, or specific software functionalities. By tailoring the variators with these additional features, they can better align with the unique needs of the industry or machinery configuration.

7. Compliance with Industry Standards:

Variators can be customized to meet specific industry standards and certifications. Depending on the industry or application, there may be specific regulatory or safety standards that variators need to comply with. Manufacturers can customize the design and manufacturing processes to ensure that the variators meet these standards and certifications.

In conclusion, variators can be customized to suit specific industries or machinery configurations. Manufacturers offer customization options to address factors such as load requirements, speed range, environmental conditions, control system integration, mounting configurations, additional features, and compliance with industry standards. By customizing variators, industries can ensure optimal performance and compatibility with their specific machinery and application needs.


Can you provide insights into the importance of proper variator alignment?

Proper variator alignment is of utmost importance for the optimal performance and longevity of variator systems. The alignment refers to the precise positioning and alignment of the variator components, including the drive and driven pulleys, belts, and associated hardware. Here are some insights into the importance of proper variator alignment:

1. Efficient Power Transfer:

Proper variator alignment ensures efficient power transfer from the engine to the driven wheels. When the variator components are properly aligned, there is minimal power loss due to misalignment or slippage. This efficient power transfer allows the vehicle to operate at its maximum performance potential, providing better acceleration, smoother shifts, and improved fuel efficiency.

2. Optimal Belt Performance:

Variators rely on belts to transmit power between the drive and driven pulleys. Proper alignment ensures that the belts operate within their designed specifications. Misalignment can cause the belts to run off-center or at an angle, leading to increased wear, premature belt failure, and reduced overall performance. Aligning the variator components correctly ensures that the belts are properly tensioned and positioned, maximizing their lifespan and performance.

3. Reduced Wear and Tear:

Misalignment can result in excessive friction, heat buildup, and increased wear on the variator components. The misaligned pulleys and belts can cause uneven distribution of forces and place additional stress on the bearings, shafts, and other mechanical parts. Over time, this can lead to accelerated wear, premature failure of components, and costly repairs. Proper variator alignment helps minimize these issues, reducing wear and tear and increasing the lifespan of the system.

4. Smooth Operation:

Proper alignment contributes to smooth and seamless operation of the variator system. When the variator components are aligned correctly, the gear ratio changes occur smoothly without jerks or vibrations. This smooth operation improves the overall driving experience, ensuring comfortable shifts and consistent power delivery. Misalignment can result in erratic behavior, such as belt slippage, juddering, or sudden changes in power output, compromising the vehicle’s performance and drivability.

5. Prevents Excessive Noise and Vibration:

Misaligned variator components can generate excessive noise and vibration during operation. The misalignment can cause the belts to rub against the pulleys, leading to squealing or chirping noises. In addition, vibrations may occur due to the imbalanced forces generated by misaligned components. Proper variator alignment helps minimize these noise and vibration issues, ensuring a quieter and smoother operation of the system.

6. Avoids Premature Component Failure:

Misalignment places undue stress on the variator components, increasing the risk of premature failure. Bearings, shafts, pulleys, and other mechanical parts can experience excessive wear, fatigue, or damage when subjected to misalignment-related forces. By aligning the variator components correctly, the load is distributed evenly, reducing the risk of premature failure and extending the lifespan of the system.

7. Consistent Performance and Efficiency:

Proper variator alignment ensures consistent performance and efficiency throughout the lifespan of the system. When the components are aligned correctly, the variator operates as intended, delivering consistent gear shifts, power delivery, and fuel efficiency. Consistency in performance and efficiency is vital for a reliable and enjoyable driving experience.

In conclusion, proper variator alignment is essential for the optimal performance, longevity, and reliability of variator systems. It ensures efficient power transfer, optimal belt performance, reduced wear and tear, smooth operation, minimized noise and vibration, avoidance of premature component failure, and consistent performance and efficiency. Regular inspection and maintenance, along with professional alignment when necessary, are crucial to maintaining proper variator alignment and maximizing the benefits of the system.


Can you provide examples of products or machinery that use variators for speed control?

Yes, variators are used in a wide range of products and machinery for speed control purposes. The ability to adjust the gear ratio continuously makes variators ideal for applications where precise speed control is required. Here are some examples of products and machinery that utilize variators for speed control:

1. Automobiles:

In the automotive industry, variators are commonly used in continuously variable transmissions (CVTs) for speed control in passenger cars, SUVs, and other vehicles. CVTs with variators allow for seamless and continuous adjustment of the gear ratio, enabling precise speed control and efficient power delivery. Variators in automobiles contribute to improved fuel efficiency, smoother acceleration, and enhanced driving comfort.

2. Motorcycles and Scooters:

Variators are also utilized in the transmissions of motorcycles and scooters for speed control. CVTs with variators provide riders with the ability to adjust the speed output smoothly and precisely. By continuously varying the gear ratio, variators offer a responsive and customizable riding experience, allowing riders to adapt to different road conditions and riding preferences.

3. Industrial Machinery:

In industrial settings, variators are used in various types of machinery that require speed control. For example, variators can be found in conveyor systems, where they allow for precise adjustment of the conveyor belt speed to match the specific production requirements. Variators are also used in pumps, fans, mixers, and other equipment that need variable speed control to optimize performance and energy consumption.

4. Agricultural Equipment:

Agricultural machinery, such as tractors, combines, and harvesters, often utilize variators for speed control. Variators in these machines allow farmers and operators to adjust the speed according to the specific tasks at hand, such as plowing, seeding, or harvesting. This flexibility enables efficient operation in various agricultural operations and field conditions.

5. Construction and Earthmoving Equipment:

Variators are used in construction and earthmoving equipment to regulate the speed of machines like excavators, loaders, and bulldozers. By controlling the gear ratio, variators enable operators to adjust the speed of these machines, allowing for precise and efficient performance in tasks such as digging, lifting, and pushing materials.

6. Marine Applications:

Marine vessels, including boats, yachts, and ships, utilize variators for speed control. In marine applications, variators are employed to adjust the propeller speed and optimize power delivery based on the desired speed and operating conditions. Variators in marine applications offer benefits such as improved fuel efficiency, enhanced maneuverability, and smooth acceleration.

7. HVAC Systems:

Variators are used in heating, ventilation, and air conditioning (HVAC) systems for speed control of fans and blowers. By adjusting the gear ratio, variators allow for precise control of the airflow, ensuring that the fans operate at the desired speed for efficient heating, cooling, and ventilation in residential, commercial, and industrial settings.

8. Exercise Equipment:

In the fitness industry, variators are employed in exercise equipment such as treadmills, elliptical trainers, and stationary bikes. Variators enable users to adjust the speed and resistance levels of the equipment, providing a customizable workout experience to meet individual fitness goals and preferences.

In summary, variators for speed control are utilized in a wide range of products and machinery, including automobiles, motorcycles, industrial machinery, agricultural equipment, construction and earthmoving machinery, marine applications, HVAC systems, and exercise equipment. The ability to continuously adjust the gear ratio allows for precise speed control, optimizing performance and efficiency in various applications.

China Professional Jwb-X Series Speed Variator Factory  China Professional Jwb-X Series Speed Variator Factory
editor by CX 2024-04-09