Forest Line Spindle Repair
The robust style of the Forest Line machines and a small installation base doesn’t lend to a huge volume of Forest Line spindle repair for Northland Tool & Electronics but when we get them we do it right. We have the equipment and the expertise to rebuild the larger style milling spindles. We have helped our customers with contamination prevention and getting their machine up and running in a short time frame.
Repair History
Forest Line Spindle Repair
We received a Forest Line milling spindle attachment that the customer had been rebuilding themselves quite often over the past few years. The bearing dimensions were worn to the point that the bearings fell off the shaft during the disassembly process. The customer complained that even after they installed new bearings in the spindle it was making noise and unable to hold tolerance.
In addition to the shaft bearing journals being far undersized we also discovered that the taper had 15 microns runout, the shaft journals had 20 microns runout, the front and rear housings were egged and the grippers were damaged.
We replaced the bearings, ground plated and reground the taper and journals. We kiss ground the shoulders. We ground plated and reground the rear housing, the front housing, the drive shaft in 8 places and the gear housing.
Parts for this spindle were not available from the OEM so Northland Tool & Electronics machining and grinding departments were called upon to manufacture a variety of the parts that were needed.
Common Problems with Forest Line
Bearing failure
Contamination
Worn tool change parts: grippers
Worn tapers
Housings are out of ISO
Journals are out of ISO
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