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 MoreMatsuura V.Plus-800 Spindle Repair
The Matsuura V.Plus-800 is a very rigid CNC vertical machining center. It come fitted with this oil lubricated, belt driven spindle capable of running up to 20,000 RPM.
CHALLENGE
Our customer sent in this Matsuura V.Plus-800 spindle stating that they were getting bad part finish and found axial movement. When it arrived at Northland Tool we noted that the spindle felt very rough when spun by hand. A complete disassembly and evaluation was then performed on the spindle. We found that the oil in the #1 bearing was a dark brown color, one of the air line fittings was broken, and one of the front coolant jets was damaged. The drawbar had scoring damage and that made it very difficult to remove the spring, but the grippers were in fair condition. A dimensional evaluation was then performed where we found a few issues. First, the front ID tooling taper had high run out and uneven contact. Second, the front bearing shoulder measured with high run out. Lastly, the ID of the front cover and the OD nose of the shaft had rub out damage. No other dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Matsuura V.Plus-800 spindle:
- Clean, inspect overall dimensions.
- Replace bearings, bolts, o-rings, oil lines, ferrules, and fitting
- Grind, plate, grind (GPG) the 40 ID tooling taper Big Plus
- GPG the Drawbar OD
- Kiss grind the front shoulder and shaft nose OD
- Skim cut damaged cover ID
RESULT
After reassembly of all components and adjusting bearing preload, we put the spindle through a rigorous break-in and testing procedure to make sure it passes our final quality inspection.
This spindle passed our final quality inspection and was 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.
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