We see a relatively large amount of Yaskawa motors in our motor shop + to ensure that the motors are tracked we serialise the motor this allows you to track the status of your repair. The motor is then evalutated by disassembling it to determine what faults or wear can be seen on the motor.
The rotors are then tested for keyway damage + any bent shafts, the rotor is balanced + the magnet strength is checked. We then test the brakes for damage + torque test them against the manufacturers holding strength.
We believe it's essential to replace all seals + bearings so on every motor we service that is exactly what happens. We also check the bearing housings + flanges are tested for clearance + wear, the motor is then cleaned, all parts are replaced, reassembled, aligned.