Northland Tool Blog

Weiss GHK 176239 Spindle Repair

 
Catastrophic bearing failure was the main cause of this spindle malfunction
Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication…

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Prater Hammer Mill Spindle Repair

The Prater Mega Hammer Mill is used in the food production industry to process materials into a fine powder.

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Brown & Sharpe 824 Spindle Repair

The Brown & Sharpe 824 Micromaster is a hydraulic surface grinder equipped with a 5 hp spindle that operates at up to 1,800 rpm.

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Need Parts Ground to Micron Tolerances? Give us a call!

This is the finish grind to a spindle housing bore. We hold micron tolerances to make sure your spindle functions like new. If you need any ID/OD grinding done please give us a call 800-774-6353. We specialize in machine tool spindle part re-qualification but we are willing to look at any job you may need ground to micron tolerances.

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Cincinnati T-35 Shaft modification to BIG-PLUS® specification

Cincinnati T-35, 4000 RPM, oil mist lubrication, belt driven Our customer asked us to modify the shaft of this horizontal machining center spindle during the rebuild process. This manufacturer of aerospace components uses two types of dual-contact tooling: BIG–PLUS® from BIG KAISER Precision Tooling, as well as SimulFit® from Parlec. For those who are unfamiliar, BIG–PLUS® is a spindle system that provides dual contact between…

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Toshiba MPF-2140 Spindle Bearing Failure

Possible cause of failure: Rear roller bearing failed, inner race cracked & spun on the shaft, scoring the rear roller journal OD. Rear hydraulic nut failed & came loose, OD rubbed out with bearing spacer. Oil inlet holes were stripped out from previous spindle rebuilder Shaft tooling taper has acceptable runout but is very bumpy with poor tool contact. Front housing ID is oversized +16/+18µ (ISO is…

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Famu PHS-912 FIVE Gruppo Parpas Spindle Repair

Famu PHS-912 FIVE Gruppo Parpas Fischer TF2 ST “Evolution 500” two axis milling head 40000 RPM, stator drive, grease lubrication, HSK32 tool interface This two-axis milling head was factory-installed on a Famu PHS-912 FIVE machine by the Italian manufacturer Gruppo Parpas. Our customer indicated that a coolant component had failed, flooding the spindle which caused the drive to trip the machine off. Our inspection showed…

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Mazak VTC20 Spindle Repair

Mazak VTC-20, 8000 RPM, coupling drive, grease lubrication, CT40 taper Our customer indicated that this spindle would occasionally make a banging noise while in operation. When we broke the spindle down for evaluation, we observed that the grease in the spindle bearings was partially washed out by coolant contamination. But the root cause of failure was loss of preload of the bearings which occurred when…

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GMN TSSV120 Spindle Repair

GMN TSSV-120, 42,000 RPM motorized grinding spindle, oil/air mist lubrication, quill pilot This spindle had axial end play incoming, indicating a loss of preload. The shaft tooling pilot had very high runout (>36µ) and the pilot face was chipped. Our internal evaluation showed contamination with grinding swarf. Also, the rear ID of the main housing where the ball cage locates was egged & oversized with…

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Matsuura MAM-72-25V Spindle Repair

Matsuura MAM72-25V grease lubrication, coupling drive, 15,000 rpm This spindle came to us and customer stated that the spindle had severe vibration but no tool retention issues. Incoming test showed the drawbar force was low and the bearings were very rough. The spindle was disassembled. We found catastrophic failure of the front bearing, front housing where the #2 bearing sits was oversized and fretted. This…

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