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 MoreGrosite U6103-36GTY.64593 Spindle Repair
The Grosite U6103-36GTY.64593 is a grinding spindle equipped with grease lubrication and a stator drive. It is capable of running up to max rpm of 3,600.
CHALLENGE
When this Grosite U6103-36GTY.64593 spindle arrived at Northland Tool it rotated freely but the bearings felt worn when spun by hand. The spindle passed our motor analyzer test incoming. After the disassembly and evaluation we recorded that the front OD taper had high run out at 6μ and both the front and rear bearings were contaminated with a black sludge. No other dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Grosite U6103-36GTY.64593 spindle:
- Clean, inspect overall dimensions
- Replace bolts, o-rings, and bearings
- Replace Seal
- Kiss Grind front OD Taper
RESULT
After reassembly of all components, adjusting bearing preload, and undergoing break-in and testing procedures, this spindle passed our final quality inspection before being returned to our customer with a 1-year warranty.
DETAILED CAUSE OF FAILURE
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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.
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