Motor Repair & Rewinding

Repair and rewind workshops replace bearings whenever a motor is opened for winding or mechanical work, often with an old bearing or partial nameplate as the only reference. Stripped motors must go back together with the correct bearing at each shaft position and the correct fit. Workshop supervisors care most about confirming position, assembly requirements and the full suffix before the parts are ordered.

• Record the marking on each removed bearing and photograph it clearly before it is discarded or cleaned.
• Check the original clearance, as a C3 motor bearing replaced with a different clearance can run with the wrong internal play once hot.
• Confirm the shield or seal configuration per shaft position, because the drive end and fan end do not always match.
• Check whether rewinding or a change of drive introduces a new temperature or insulation requirement before reusing the original specification.