Stripped axle shaft

Is it possible to replace the shaft where the axle slides into the motor. We have several that have stripped out. Thansk.

Hi vexcellent,

We’re sorry that you have encountered this problem. Unfortunately, the output shaft socket on the Smart Motor is not a user-serviceable part.

To prevent the Smart Motor output socket from stripping in the future, please ensure that shafts are fully seated into the output socket. If a shaft is only inserted partially, such as only inserted 1-3 millimeters (1/16 to 1/18 inch) into the Smart Motor), this will put higher stress on the motor output material and might cause it to round out under high stress loading.

If you have any additional concerns or questions, please contact VEX Technical Support at or by calling +1-903-453-0802.


  • Art