Here’s a detailed service proposal draft for KOBELCO Screw Air Compressor Motor Rewinding/Repairing that you can adapt for your needs:

1. Scope of Work

We will carry out complete rewinding and/or repairing services for the electric motor of your KOBELCO screw air compressor, ensuring it meets or exceeds OEM specifications. Work will include:

1. Initial Inspection & Testing

   • Megger insulation resistance test.

   • Bearing condition check.

   • Rotor and stator visual inspection.

   • Winding resistance measurement.

2. Motor Dismantling

   • Safe removal of rotor, stator, and bearings.

   • Documentation of winding layout and technical parameters.

3. Rewinding Process

   • Removal of old winding and complete core cleaning.

   • Replacement of winding wire with new high-grade enamel copper wire.

   • Application of high-temperature class insulation materials.

   • Proper slot liner, wedge, and binding process.

   • Vacuum impregnation with Class H varnish for durability.

4. Repair Works (If Required)

   • Rotor balancing.

   • Shaft repair or replacement.

   • Bearing housing machining.

   • Replacement of bearings (SKF/NTN).

5. Final Assembly & Testing

   • Dynamic balancing of rotor.

   • High voltage test (Hi-Pot).

   • No-load run test.

   • Vibration and noise level check.

   • Load test if applicable.

2. Deliverables

• Fully serviced/repaired motor meeting KOBELCO OEM standards.

• Service report with test results before and after repair.

• Six (6) months service warranty for rewound motor (conditions apply).

3. Spare Parts & Materials

• High-grade copper winding wire (Class H).

• Insulation materials (Nomex/Mica).

• OEM or equivalent bearings.

• Electrical varnish for impregnation.