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Question:

What does the back of the reducer mean? How is it calculated?,

What does the back of the reducer mean? How is it calculated?,Can it be understood that the backlash is 2 times the gear gap, or approximately 2 times?

Answer:

Servo motors are generally used reducer, such as Sumitomo's FC series cycloid reducer, IB series of planetary reducer
There is a small angular displacement at the input end of the reducer. This angular displacement is the clearance of the return stroke. The unit is "divided", which is 1/60 of the time
The backlash is also called the return clearance. The domestic definition is generally: the output terminal is fixed, the input end rotates clockwise and counterclockwise, so that the input end has a rated torque +-2% torque

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