The Bridgeport Torq-Cut 22 is a smaller CNC vertical machining center. It comes fitted with a grease lubricated and belt driven spindle capable of running up to 7,500 rpm.
Read MoreMyford Spindle Repair
CHALLENGE
This Myford spindle was completely seized when it arrived to us. Our technician released the shaft lock, but discovered that the lockup pin was stuck. The rear thrust bearings were rough when rotated by hand, indicating contamination and significant wear. Inspection of the hydraulic oil revealed contamination, but the spindle shaft and oil bearing surfaces were in very good condition. Dimensional analysis showed that the front collet ID taper had high runout of 6-7µ. The motor shaft OD, drive pulley ID, and flat drive belt were heavily worn.
SOLUTION
We repaired the lockup pin and manufactured a new drive pulley. Grinding was done to the motor shaft OD and the front collet ID taper to remedy high runout.
This repair included a new replacement of thrust bearings, seals, o-rings, flat drive belt, assembly screws, and hydraulic oil.
We adjusted the oil gap for front bearing and thrust bearing preload, reassembled and broke in.
RESULT
This spindle passed our final quality inspection before being returned to our customer with a 1-year warranty.
Does your spindle need repair? GET A QUOTE TODAY
More Case Studies
Repair History - Here are examples of similar spindle repairs that may contain additional information that will help you. If you have additional questions, please contact us.
It’s a fact of machining — eventually, even top-of-the-line turning machines will experience a spindle failure. Spindles endure tension, torsion, heavy loads, and speeds up to and beyond 150,000 RPM, to name a few of the standard stressors.
Read More