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 MoreHaas ST-10 Spindle Repair
The Haas ST-10 is a high performance turning center. It comes equipped with an oil mist lubricated and belt driven spindle that is capable of running up to 6,000 rpm.
CHALLENGE
The first thing noted for this Haas ST-10 spindle was that the bearings were noisy when rotated by hand in assembly incoming. Upon a full disassembly and evaluation, we found that the front bearing had suffered a catastrophic failure, the cage was destroyed. From this failure, the front bearing journal shoulder had been damaged and had extremely high runout >10µm. No other significant dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Haas ST-10 spindle:
- Clean, inspect overall dimensions
- Kiss grind the front bearing journal shoulder
- Replace all bearings, o-rings, and assembly screws
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.
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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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