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 Super Mini Mill Spindle Repair
The Haas Mini Mill machines are compact machining centers perfect for small shops or schools. The spindle we repaired was air oil injected, belt driven, and capable of running up to 10,000 RPM.
CHALLENGE
This Haas Super Mini Mill spindle arrived at Northland Tool and we noted that it rotated freely, but the ID Taper had high run out. We then performed a full breakdown and evaluation and recorded that the ID tooling taper had high run out bare shaft as well. Lastly, the front bearings felt worn when spun by hand and the draw bar pulled low force. No other dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Haas Super Mini Mill spindle:
- Clean, inspect overall dimensions
- Replace bolts, o-rings, and bearings
- Replace drawbar assembly
- Grind, plate, grind (GPG) the ID 40 tooling 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.
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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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