Siemens 1FK7042 Servo Motor Repairs

Data

Motor nameplate data is recorded

Inspection

A visual inspection of any damage to the motor.

• Damaged Leads/Terminals
• Worn output shaft/keyways
• Cracks in end bells or covers

Job Ticket

We complete to full write up off all motor data

• All winding tests (Resistance, Meg Ω, Continuity)
• All bearing sizes
• All seal sizes
• Brake torque tests (Record Torque, winding resistance)
• Feedback Tests (Tachometer/Encoder)

Motor Disassembly

• Bearing and seal sizes are recorded
• Bearing fits are measured on shaft and End bell
• Brake torque is measured as well as resistance and Meg Ω
• More winding tests are performed (Surge and HiPOT tests)
• Stator is then washed and baked in oven
• Magnets are inspected for cracks or if loose on shaft
• Encoder is tested with either (Heidenhain PWM20, Sick PGT-11, or Mitchell Electronics equipment)

Assembly

• New bearings are installed
• New seals are installed
• If required, new windings are impregnated
• Brakes are rebuilt or replaced depending on manufacturer design.
• Rebuilt or New encoders are installed and aligned using:
• (Heidenhain PWM20, Sick PGT-11, or Mitchell Electronics equipment)

Rotor Balancing and Testing

• Rotor is run through a full vibration diagnostic

Run Testing

• Every Motor is Run for a minimum of 1 hour using one of our drives.
• We use Siemens S110, S120, IndraDrive, AB Kinetix 300, Yaskawa 7, and AMC drives

Service Report

• A Final 3-page Service Report is filled out
• Pinout diagram for power and feedback is provided
• Brake torque is recorded a final time for our Service Reports
• A photo of nameplate and motor is attached
• A motor tag is installed on motor with QR code linking Service Report and Job Histories
• If requested, a YouTube link is attached to the service report of motor