China manufacturer China Flange Mounted Stepless Udl Speed Variators for Gearbox B5

Product Description

China Flange Mounted Stepless UDL Speed Variators for Gearbox G5

Product Features:

1. High precision: 0.5-1
2. Wide speed range, the output speed ratio can be in 1/1.4 between 1/7
3. High intensity and long service life
4. Easy speed regulation
5. Continuous work, smooth operation, stable performance and low noise
6. Whole sealing and low requirement for environment
7. Compact organization and small size.
8. It is made of high quality aluminum alloy with beautiful appearance, light weight and no rusting.
9. Good adaptability. UDL series continuously variable transmission can combine with variable reducer units to realize low speed continuous variable speed.

Application areas: food equipment, packaging machinery, chemical machinery, pharmaceutical, plastic, papermaking, machine tools, transportation, and various kinds of automatic production lines and transmission lines which need to adjust speed.

Production Picture:



Models Power Ratio O. Speed O.Torque O. Shaft Dia. O. Flange Dia.
UDL002 0.18KW 1.6~8.2 800~170rpm 1.5~3N.m Φ11 Φ140
UDL005 0.25KW 1.4~7 1000~200rpm 2.2~6N.m Φ14 Φ160
UDL005 0.37KW 1.4~7 1000~200rpm 3~6N.m Φ14 Φ160
UDL571 0.55KW 1.4~7 1000~200rpm 4~8N.m Φ19 Φ200
UDL571 0.75KW 1.4~7 1000~200rpm 6~12N.m Φ19 Φ200
UD571 1.1KW 1.4~7 1000~200rpm 9~18N.m Φ24 Φ200
UD571 1.5KW 1.4~7 1000~200rpm 12~24N.m Φ24 Φ200
UD030 2.2KW 1.4~7 1000~200rpm 18~36N.m Φ28 Φ250
UD030 3.0KW 1.4~7 1000~200rpm 24~48N.m Φ28 Φ250
UD030 4.0KW 1.4~7 1000~200rpm 32~64N.m Φ28 Φ250
UD050 5.5KW 1.4~7 1000~200rpm 45~90N.m Φ38 Φ300
UD050 7.5KW 1.4~7 1000~200rpm 59~118N.m Φ38 Φ300

Company Overview


About Greensky Mechanical
HISTORY:  Greensky is a mechanical brand of CHINAMFG Power Co., Ltd. With over 10 years'
mechanical manufacturing experiences, CHINAMFG Power always strictly stands on the
principle of Best Customer Satisfaction.

QUALITY:  Material Inspection, Production Control, Finished Goods Test, Pre-dellivery Inspection

MISSION:  "Once and forever" is our goal to serve customers in the world. Once we do
business with customer, we will do business forever.

MARKET 30 different countries, mainly Germany, Austria, Japan, USA and Middle-East.

DELIVERY 100% on-time delivery Guaranteed.

SERVICES Fast response in English, German, Japanese and Chinese languages.

OEM Customized orders are welcome at CHINAMFG Power.


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Application: Motor, Machinery
Hardness: Hardened Tooth Surface
Installation: Flange Mounted
Layout: Planetary Gear Reducer
Gear Shape: Bevel Gear
Step: Stepless
US$ 10/Piece
1 Piece(Min.Order)





How do variators contribute to smoother acceleration and deceleration in vehicles?

Variators play a significant role in achieving smoother acceleration and deceleration in vehicles, particularly those equipped with continuously variable transmissions (CVTs). The continuous and seamless adjustment of the gear ratio provided by variators allows for precise control of engine speed and power delivery, resulting in smoother changes in vehicle speed. Here's how variators contribute to smoother acceleration and deceleration:

1. Continuous Gear Ratio Adjustment:

Variators in CVTs enable the continuous adjustment of the gear ratio, allowing the engine to operate at the most efficient and effective speed for a given driving condition. Unlike traditional transmissions with fixed gear ratios, variators provide an infinite number of gear ratios within their operating range. This continuous adjustment ensures that the vehicle's engine stays within its optimal power band, resulting in smooth and responsive acceleration and deceleration.

2. Elimination of Gear Shifts:

Traditional transmissions with discrete gear ratios require frequent gear shifts during acceleration and deceleration, which can cause jerky movements or interruptions in power delivery. In contrast, variators eliminate the need for gear shifts altogether. The smooth and continuous adjustment of the gear ratio by the variator allows the engine to maintain a consistent and optimal speed, resulting in seamless acceleration and deceleration without the interruption of gear changes.

3. Precise Engine Control:

Variators enable precise control of the engine speed, allowing for finer adjustments during acceleration and deceleration. The engine speed can be matched more closely to the desired vehicle speed, resulting in smoother transitions. By continuously optimizing the gear ratio based on the driver's input and the vehicle's operating conditions, variators ensure that the engine operates in its most efficient range, leading to smoother acceleration and deceleration.

4. Adaptive Power Delivery:

Variators in modern CVTs are often equipped with advanced control systems that adapt the power delivery to match the driver's demands and the road conditions. These control systems monitor various parameters such as throttle input, vehicle speed, and engine load, and adjust the gear ratio accordingly to provide the desired acceleration or deceleration response. This adaptive power delivery ensures that the vehicle responds smoothly to the driver's inputs, enhancing the overall driving experience.

5. Seamless Transitions:

The continuous and infinite gear ratios provided by variators allow for seamless transitions between different driving conditions. Whether it's transitioning from a standing start to cruising speed or decelerating from high speed to a stop, variators ensure that the changes in vehicle speed are gradual and smooth. This eliminates the abrupt shifts that can occur with traditional transmissions, resulting in a more comfortable and refined driving experience.

In summary, variators, particularly in vehicles equipped with CVTs, contribute to smoother acceleration and deceleration by providing continuous gear ratio adjustment, eliminating gear shifts, enabling precise engine control, facilitating adaptive power delivery, and ensuring seamless transitions between different driving conditions. These features result in improved drivability, reduced jerkiness, and enhanced comfort for the driver and passengers.


What are the signs that indicate a need for variator repairs, and how can they be diagnosed?

Recognizing the signs that indicate a need for variator repairs is crucial for maintaining the performance and reliability of the system. Here are some common signs to watch out for and the diagnostic methods used to identify variator issues:

1. Abnormal Noise:

If you notice unusual noises coming from the variator, such as grinding, whining, or rattling sounds, it could indicate a problem. These noises may be a result of worn-out bearings, misaligned components, or damaged pulleys. To diagnose the issue, a thorough inspection of the variator, including the pulleys, belts, and bearings, can help identify the source of the noise.

2. Slipping or Inconsistent Power Transfer:

If you experience a loss of power or notice the engine revving without a corresponding increase in speed, it could indicate slipping belts or worn-out pulleys in the variator system. Inconsistent power transfer can also manifest as jerky acceleration or a delay in power delivery. Diagnosing this issue involves checking the tension and condition of the belts, as well as inspecting the pulleys for signs of wear or damage.

3. Overheating:

If the variator system becomes excessively hot during operation, it may indicate a problem. Overheating can be caused by factors such as insufficient lubrication, misalignment, or excessive friction within the variator components. Diagnosing this issue involves monitoring the temperature of the variator during operation and inspecting the lubrication levels, cooling systems, and components for any abnormalities.

4. Vibration or Shaking:

Excessive vibration or shaking during variator operation can be a sign of misaligned components, worn-out bearings, or damaged pulleys. These issues can lead to an imbalanced operation, resulting in vibrations felt throughout the machinery. To diagnose this issue, a visual inspection of the variator components and a check for any signs of wear or damage can help identify the source of the vibration.

5. Leaking Fluid:

If you notice fluid leaks around the variator system, it could indicate a problem with seals or gaskets. Leaking fluid can lead to inadequate lubrication or loss of hydraulic pressure, affecting the performance and reliability of the variator. Diagnosing this issue involves identifying the source of the leak and examining the seals, gaskets, and fluid levels for any signs of damage or wear.

6. Erratic Gear Shifting:

If the variator system exhibits erratic or inconsistent gear shifting, such as sudden jumps in gear ratio or difficulty in engaging certain gears, it may indicate a problem with the variator components or the control system. Diagnosing this issue involves inspecting the variator components, including the pulleys, belts, and control mechanisms, and checking for any misalignments, wear, or malfunctions.

7. Diagnostic Tools and Professional Inspection:

In addition to the visual inspections mentioned above, professional diagnosis of variator issues often involves the use of specialized diagnostic tools and equipment. These tools can include belt tension gauges, laser alignment devices, vibration analyzers, temperature sensors, and diagnostic software. Professional technicians with expertise in variator systems can perform comprehensive inspections and use these tools to diagnose specific problems accurately.

It's important to note that variator repairs should be carried out by trained professionals with experience in variator systems. If you notice any signs indicating potential variator issues, it is advisable to have the system inspected and repaired by a qualified technician to ensure proper diagnosis and appropriate repairs are performed.


Can you describe the benefits of using a variator in terms of efficiency and performance?

Using a variator in various applications can offer significant benefits in terms of efficiency and performance. The ability to continuously adjust the gear ratio and optimize engine RPM contributes to improved fuel economy, smoother power delivery, and enhanced overall performance. Here's a detailed explanation of the benefits of using a variator:

1. Improved Fuel Efficiency:

A variator allows for precise control of the gear ratio, enabling the engine to operate within its optimal RPM range. By continuously adjusting the gear ratio to match the driving conditions, the engine can maintain an efficient power output. This optimized engine RPM helps to reduce fuel consumption and improve overall fuel efficiency. Variators are particularly beneficial in situations that involve frequent speed changes or stop-and-go traffic, where traditional gear systems may be less efficient.

2. Smoother Power Delivery:

Traditional gear systems have discrete gear ratios, resulting in noticeable gear shifts when changing gears. In contrast, a variator provides stepless gear shifts, allowing for a smooth and seamless power delivery. The continuous adjustment of the gear ratio ensures that the engine operates at the most suitable RPM for the current driving conditions, resulting in a smoother acceleration and a more refined driving experience.

3. Optimal Performance:

A variator enables the engine to operate within its optimal power band. By continuously varying the gear ratio, the variator keeps the engine RPM at an ideal level, maximizing power output and torque delivery. This translates into improved performance, whether it's for quick acceleration, high-speed cruising, or towing heavy loads. The ability to maintain optimal performance across a wide range of driving conditions is a significant advantage of using a variator.

4. Adaptability to Driving Conditions:

A variator allows for seamless adaptation to different driving conditions. It can adjust the gear ratio based on factors such as vehicle speed, throttle input, and load requirements. This adaptability ensures that the engine operates efficiently and delivers the appropriate power for specific driving situations. Whether it's accelerating from a standstill, maintaining a constant speed, or climbing steep inclines, the variator can optimize the gear ratio to suit the demands of the moment.

5. Reduced Wear and Tear:

Due to the smooth and continuous power delivery, variators help to reduce wear and tear on various components of the drivetrain. The absence of abrupt gear shifts and the ability to maintain optimal engine RPM contribute to reduced stress on the engine, transmission, and other driveline components. This can result in increased longevity and reliability of the vehicle or machinery.

6. Enhanced Driving Comfort:

The smooth and seamless power delivery provided by a variator contributes to enhanced driving comfort. The absence of gear shifts and the ability to maintain the engine RPM in the optimal range reduce vibrations, noise, and harshness. This leads to a more refined and enjoyable driving experience, particularly in urban driving conditions or during long-distance journeys.

In summary, using a variator in various applications offers benefits in terms of improved fuel efficiency, smoother power delivery, optimal performance, adaptability to driving conditions, reduced wear and tear, and enhanced driving comfort. These advantages make variators a desirable choice for achieving greater efficiency and performance in vehicles and machinery.

China manufacturer China Flange Mounted Stepless Udl Speed Variators for Gearbox B5  China manufacturer China Flange Mounted Stepless Udl Speed Variators for Gearbox B5
editor by CX 2024-01-19

Variator Gearbox Co., Ltd.

Mail: [email protected]

As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.

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Ever-power Variator Gearbox Co., Ltd.

Tel: +86-571-88220653/88220971
Fax: +86-571-88220651

Mail: [email protected]

contact us


As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.

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