China best High Torque 750W Servo Motor Planetary Gear Reducer Gearbox components of gearbox

Product Description

High Torque 750W Servo Motor Planetary Gear Reducer Gearbox

Nickel chromium molybdenum alloy steel gear is manufactured with carburizing heat treatment for high abrasion resistance and impact toughness and by honing process to increase gear precision and low noise operation.Internal gear bore uses needle roller to obtain higher abrasion resistance and strength.

Product Description

(1).The output shaft is made of large size,large span double bearing design,output shaft and planetary arm bracket as a whole.The input shaft is placed directly on the planet arm bracket to ensure that the reducer has high operating accuracy and maximum torsional rigidity.
(2).Shell and the inner ring gear used integrated design,quenching and tempering after the processing of the teeth so that it can achieve high torque,high precision,high wear resistance.Moreover surface nickel-plated anti-rust treatment,so that its corrosion resistance greatly enhanced.
(3).The planetary gear transmission employs full needle roller without retainer to increase the contact surface,which greatly upgrades structural rigidity and service life.
(4).The gear is made of Japanese imported material.After the metal cutting process,the vacuum carburizing heat treatment to 58-62HRC. And then by the hobbing,Get the best tooth shape,tooth direction,to ensure that the gear of high precision and good impact toughness.
(5).Input shaft and sun gear integrated structure,in order to improve the operation accuracy of the reducer.
1.Low Noise:The use of helical gear design,to achieve a smooth,quite operation of the reducer.
2. High Precision:Backlash is 3 arcmin or less,accurate positioning.
3. High Rigidity,High Torque:The output shaft used large size,large span double support bearing design,which improves the rigidity and torque of the reducer.
4. High Efficiency:1-stage up to 95% or more,2-stage up to 92% or more.
5. Maintenance-Free:Low grease wear,can be lifetime lubrication.
6. Sealing Effect is Good:Lubricating grease with high viscosity,not easy to separate the characteristics,ip65 protection class to ensure that no grease leakage.
7. Installation Unrestrained:Can be installed arbitrarily.
8. Wide Applicability:Applicable to any type of servo motor.
9. An organic [integral] whole output axis.

Specifications PVFN60 PVFN90 PVFN120
Technal Parameters
Max. Torque Nm 1.5times rated torque
Emergency Stop Torque Nm 2.5times rated torque
Max. Radial Load N 240 450 1240
Max. Axial Load N 220 430 1000
Torsional Rigidity Nm/arcmin 1.8 4.85 11
Max.Input Speed rpm 8000 6000 6000
Rated Input Speed rpm 4000 3500 3500
Noise dB ≤58 ≤60 ≤65
Average Life Time h 20000
Efficiency Of Full Load % L1≥95%       L2≥92%
Return Backlash P1 L1 arcmin ≤8 ≤8 ≤8
L2 arcmin ≤12 ≤12 ≤12
P2 L1 arcmin ≤16 ≤16 ≤16
L2 arcmin ≤20 ≤20 ≤20
Moment Of Inertia Table L1 3 Kg*cm2 0.46 1.73 12.78
4 Kg*cm2 0.46 1.73 12.78
5 Kg*cm2 0.46 1.73 12.78
7 Kg*cm2 0.41 1.42 11.38
10 Kg*cm2 0.41 1.42 11.38
L2 12 Kg*cm2 0.44 1.49 12.18
15 Kg*cm2 0.44 1.49 12.18
16 Kg*cm2 0.72 1.49 12.18
20 Kg*cm2 0.44 1.49 12.18
25 Kg*cm2 0.44 1.49 12.18
28 Kg*cm2 0.44 1.49 12.18
30 Kg*cm2 0.44 1.49 12.18
35 Kg*cm2 0.44 1.49 12.18
40 Kg*cm2 0.44 1.49 12.18
50 Kg*cm2 0.34 1.25 11.48
70 Kg*cm2 0.34 1.25 11.48
100 Kg*cm2 0.34 1.25 11.48
Technical Parameter Level Ratio   PVFN60 PVFN90 PVFN120
Rated Torque L1 3 Nm 27 96 161
4 Nm 40 122 210
5 Nm 40 122 210
7 Nm 34 95 170
10 Nm 16 56 86
L2 12 Nm 27 96 161
15 Nm 27 96 161
16 Nm 40 122 210
20 Nm 40 122 210
25 Nm 40 122 210
28 Nm 40 122 210
30 Nm 27 96 161
35 Nm 40 122 210
40 Nm 40 122 210
50 Nm 40 122 210
70 Nm 34 95 170
100 Nm 16 56 86
Degree Of Protection   IP65
Operation Temprature ºC  – 10ºC to -90ºC
Weight L1 kg 1.7 4.4 12
L2 kg 1.9 5 14


Company Profile

Packaging & Shipping

1. Lead time: 10-15 days as usual, 30 days in busy season, it will be based on the detailed order quantity;
2. Delivery: DHL/ UPS/ FEDEX/ EMS/ TNT


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Application: Motor, Motorcycle, Machinery, Marine, Agricultural Machinery, Machine Tool Manufacturing
Hardness: Hardened Tooth Surface
Installation: Vertical Type
Layout: Coaxial
Gear Shape: Spur Gear
Step: Double-Step
US$ 269/Piece
1 Piece(Min.Order)

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Customized Request

planetary gearbox

Smooth and Controlled Movement in Industrial Robots with Planetary Gearboxes

Planetary gearboxes play a crucial role in ensuring smooth and controlled movement in industrial robots, enhancing their precision and performance:

Reduced Backlash: Planetary gearboxes are designed to minimize backlash, which is the amount of play or free movement between gear teeth. This reduction in backlash results in precise and accurate motion control, allowing industrial robots to achieve precise positioning and repeatability.

High Gear Reduction Ratios: Planetary gearboxes offer high gear reduction ratios, allowing the robot’s motor to output higher torque while maintaining lower speed. This capability enables robots to handle heavy loads and perform tasks that require fine adjustments and delicate movements.

Compact Design: The compact and lightweight design of planetary gearboxes allows for their integration into the limited space of industrial robot joints and actuators. This compactness is crucial for maintaining the overall efficiency and agility of the robot’s movements.

Multi-Speed Capabilities: Planetary gearboxes can be designed with multiple gear stages, allowing industrial robots to operate at different speeds as needed for various tasks. This flexibility in speed selection enhances the robot’s versatility in performing tasks of varying complexities.

High Efficiency: Planetary gearboxes are known for their high efficiency, which translates to minimal energy loss during gear transmission. This efficiency ensures that the robot’s movements are smooth and consistent while optimizing energy consumption.

Torque Distribution: The arrangement of planetary gears allows for efficient distribution of torque across multiple gear stages. This feature ensures that the robot’s joints and actuators receive the appropriate amount of torque for controlled movement, even when handling varying loads.

Seamless Integration: Planetary gearboxes are designed to be easily integrated with servo motors and other robotic components. This seamless integration ensures that the gearbox’s performance is harmoniously aligned with the overall robotic system.

Precision and Accuracy: By providing precise gear reduction and motion control, planetary gearboxes enable industrial robots to perform tasks that demand high levels of precision and accuracy, such as assembly, welding, painting, and intricate material handling.

Reduced Vibrations: The reduced backlash and smooth gear engagement in planetary gearboxes contribute to minimized vibrations during robot operation. This results in quieter and more stable robot movements, further enhancing their performance and user experience.

Dynamic Load Handling: Planetary gearboxes can handle dynamic loads that may change during robot operation. Their ability to manage varying loads while maintaining controlled movement is essential for safe and reliable robot performance.

In summary, planetary gearboxes ensure smooth and controlled movement in industrial robots by minimizing backlash, offering high gear reduction ratios, providing a compact design, enabling multi-speed capabilities, maintaining high efficiency, distributing torque effectively, seamlessly integrating with robotic systems, enhancing precision and accuracy, reducing vibrations, and enabling dynamic load handling. These features collectively contribute to the precise and optimized motion of industrial robots in various applications and industries.

planetary gearbox

The Role of Lubrication and Cooling in Maintaining Planetary Gearbox Performance

Lubrication and cooling are essential factors in ensuring the optimal performance and longevity of planetary gearboxes. Here’s how they play a crucial role:

Lubrication: Proper lubrication is vital for reducing friction and wear between gear teeth and other moving components within the gearbox. It forms a protective layer that prevents metal-to-metal contact and minimizes heat generation. The lubricant also helps dissipate heat and contaminants, ensuring a smoother and quieter operation.

Using the right type of lubricant and maintaining the proper lubrication level are essential. Over time, lubricants may degrade due to factors like temperature, load, and operating conditions. Regular lubricant analysis and replacement help maintain optimal gearbox performance.

Cooling: Planetary gearboxes can generate significant heat during operation due to friction and power transmission. Excessive heat can lead to lubricant breakdown, reduced efficiency, and premature wear. Cooling mechanisms, such as cooling fans, fins, or external cooling systems, help dissipate heat and maintain a stable operating temperature.

Efficient cooling prevents overheating and ensures consistent lubricant properties, extending the life of the gearbox components. It’s particularly important in applications with high-speed or high-torque requirements.

Overall, proper lubrication and cooling practices are essential to prevent excessive wear, maintain efficient power transmission, and prolong the service life of planetary gearboxes. Regular maintenance and monitoring of lubrication quality and cooling effectiveness are key to ensuring the continued performance of these gearboxes.

planetary gearbox

Role of Sun, Planet, and Ring Gears in Planetary Gearboxes

The arrangement of sun, planet, and ring gears is a fundamental aspect of planetary gearboxes and significantly contributes to their performance. Each gear type plays a specific role in the gearbox’s operation:

  • Sun Gear: The sun gear is located at the center and is driven by the input power source. It transmits torque to the planet gears, causing them to orbit around it. The sun gear’s size and rotation speed affect the overall gear ratio of the system.
  • Planet Gears: Planet gears are smaller gears that surround the sun gear. They are held in place by the planet carrier and mesh with both the sun gear and the internal teeth of the ring gear. As the sun gear rotates, the planet gears revolve around it, engaging with both the sun and ring gears simultaneously. This arrangement multiplies torque and changes the direction of rotation.
  • Ring Gear (Annulus Gear): The ring gear is the outermost gear with internal teeth that mesh with the planet gears’ external teeth. It remains stationary or acts as the output shaft. The interaction between the planet gears and the ring gear causes the planet gears to rotate on their own axes as they orbit the sun gear.

The arrangement of these gears allows for various gear reduction ratios and torque multiplication effects, making planetary gearboxes versatile and efficient for a wide range of applications. The combination of multiple gear engagements and interactions distributes the load across multiple gear teeth, resulting in higher torque capacity, smoother operation, and lower stress on individual gear teeth.

Planetary gearboxes offer advantages such as compact size, high torque density, and the ability to achieve multiple gear reduction stages within a single unit. The arrangement of the sun, planet, and ring gears is essential for achieving these benefits while maintaining efficiency and reliability in various mechanical systems.

China best High Torque 750W Servo Motor Planetary Gear Reducer Gearbox   components of gearbox	China best High Torque 750W Servo Motor Planetary Gear Reducer Gearbox   components of gearbox
editor by CX 2024-03-28