Fanuc Spindle Motor Repair

Fanuc S & Alpha Spindle Motors

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Repair Brands Index
(Brands We Service)

S & Alpha Series
Servo Motors

M & L Series DC
Motors

Alpha I Servo motors

Fanuc
ServoSeal ^TM

Alpha I Std / HV
Spindle Motors

Alpha i CTTS

Servo offers full service repairs on every Fanuc spindle motor. Every servo motor that comes into our facility is repaired with the following features:

• In-house electrical motor rewinding to original manufacturer's specifications
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   • One year warranty from installation date
   • Warranty tracking on ALL repairs by serial number
   • Same day turnaround service available at NO extra charge

Our servo motor repairs have a less than 1% yearly failure rate, which is the lowest in the industry. We also do NOT use any flat rate pricing. We only charge for what is wrong with the motor, which means a significant cost savings for you!

In order to keep your down time to a minimum and save you money, each Fanuc spindle motor repair includes the following extra services:

   • All original Fanuc drives and CNC controls
   • Test system designed and engineered by GEF and SMD
   • Original Fanuc CNC motor test programs
   • Encoder and signal generator testing and alignment to manufacturer's specifications
   • Specially designed AC motor test stand
   • Propietary motor winding fixtures
   • Copper windings and class H insulation materials
   • Superior sealing system for stator windings, end bells and housing fits, connectors, seals, etc.
   • End bells and shafts measured to manufacturer's specification or better
   • Balancing to Class 1 or better
   • Vibration testing with SKF analysis equipment

We also stock a full inventory (over $100,000) of original Fanuc motor parts along with the lowest end-user prices on new motors and controls. Rush delivery service on your repairs is also available. Don't hesitate to contact us to learn more information on how we can be your #1 source for Fanuc spindle motor repair.

Rebuilt to New Fanuc (CTTS) coolant thru the shaft spindle motor. Special tolerances measured in microns are met everytime.

Fanuc flange and foot mounted spindle motors in for repair. Servo can repair these motors in 1-2 days providing balancing and vibration testing which the OEM and other competitors don't provide.

Old, defective Fanuc S series spindle motor in for repair. This motor uses the old version of the magnetic drum Z pulse sensor.

Old version of the magnetic drum Z pulse sensor used on old Fanuc S series spindle motors. Servo stocks the complete sensor kit.

Fanuc shorted windings. Fanuc servo and spindle motors are famous for phase to phase shorts.

Fanuc sprays or trickles their varnish into their stator windings at an angle with the drive end bell attached to the stator. In cases as shown, sometimes too much varnish is used and the excess puddles and hardens on the winding and end bell. If a piece of this varnish breaks off it could snap off one of the winding wires making it junk. With Servo's dipping process this would never happen.

Servo uses class H insulation - slot liners, wedges, lead wire, tie cords, and most importantly phase paper. Quite a difference in materials compared to the OEM.

Servo rebuilds Fanuc spindle motor cooling fans. Our meticulous cleaning and repair procedures allow us to save the customers a lot of money compared to a whole new fan for assembly.

Servo uses only OEM Fanuc alignment procedures for hi-res encoder alignment - with or without marker pulse.

Rebuilt Fanuc Alpha spindle motor ready for vibration testing. Note: The special 2 part epoxy paint Servo uses in its ServoSeal^TM process.