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NGW Series Planetary Gear Reducer

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This series reducer is an involute spur cylindrical planetary transmission structure. It has the characteristics of small volume, light weight, smooth operation, and low noise. It is widely used in lifting, conveying, metallurgy, cement, chemical industry, light industry, mining and other industries. It has 3 product specifications, 12 models with primary transmission, 9 models with secondary transmission, and 6 models with tertiary transmission.
Availability:
Quantity:

Technical Parameters

Input power

1kw~3kw

Output torque

320kN.m~49200kN.m

Transmission ratio

2.8~2000

Price

2500~900000 yuan


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场景

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Installation Issues and Solutions for Reducers

Reducers are widely used in many industries, but numerous problems can occur during the installation process. Here are the main installation issues and their solutions:

Shaft breakage caused by insufficient load capacity of the reducer:

During selection, users mistakenly believe that as long as the rated output torque of the selected reducer meets the working requirements, it will be sufficient. This is not the case. First, the value obtained by multiplying the rated output torque of the matching motor by the reduction ratio should in principle be less than the rated output torque of the similar reducer provided in the product catalog. Second, the overload capacity of the drive motor and the maximum working torque actually required must also be considered. Theoretically, the rated output torque of the reducer should be greater than twice the maximum working torque required by the user. This criterion must be strictly followed in some applications, not only to protect the gears inside the reducer but, more importantly, to avoid the output shaft of the reducer from being twisted off. This is mainly because if there are problems with the equipment installation and the output shaft of the reducer and its load working host get stuck, the overload capacity of the drive motor will still cause it to continuously increase output, which may cause the force on the reducer's output shaft to exceed twice its rated output torque and twist off the reducer's output shaft. Secondly, during acceleration and deceleration processes, if the instantaneous torque on the reducer's output shaft exceeds twice its rated output torque, and this acceleration and deceleration are too frequent, it will eventually cause the reducer shaft to break.

The solution is as follows:

When purchasing a reducer, pay attention to selecting the appropriate model. It is better to choose a model slightly higher than your requirements rather than selecting a model that is barely sufficient due to lower price or other reasons, as this is more likely to cause problems.


Installation Issues and Solutions for Reducers - Shaft Breakage

Reducers are widely used in many industries, but numerous problems can occur during the installation process. Here are the main installation issues and their solutions:

Shaft breakage due to misalignment:

When the concentricity between the motor and reducer is well maintained during assembly, the reducer’s input shaft only bears rotational torque and will rotate smoothly. However, when misalignment occurs, the reducer's input shaft must withstand radial forces from the motor end. This radial force, acting over time, will cause the motor output shaft to bend, with the bending direction continuously changing as the shaft rotates. With each rotation, the direction of the radial force changes 360 degrees. If the concentricity error is significant, this radial force will cause the motor output shaft temperature to rise, its metal structure will be continuously damaged, and eventually the radial force will exceed what the motor output shaft can withstand, leading to its breakage. The greater the concentricity error, the shorter the time until the drive motor output shaft breaks. When the drive motor output shaft breaks, the reducer's input end will also be subjected to radial forces from the motor. If this radial force simultaneously exceeds the maximum radial load capacity of both components, it will also cause deformation or even fracture at the reducer's input end. Therefore, ensuring concentricity during assembly is crucial!

The solution is as follows:

During installation, pay attention to the concentric alignment between the reducer and motor, ensuring that both shaft centers are on a straight line.


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