Our Blog - See Examples of Spindles We've Repaired

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Welcome to our blog. Here, you'll find examples of spindles we've repaired in the past. We explain what was wrong, have images, videos and more. If you're looking for more specific brand information, or can't find a brand click here, or try the "brands" link above.

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    • Okamoto OH-60M Spindle Rebuild

    Okamoto OH-60M

    Okamoto OH-60M Spindle Repair

    60,000 rpm

    Oil Mist Lubricated

    The front bearings failed on this spindle causing it to stop rotating. The rear housing was out of tolerance due to fretting. We ground plate ground the rear housing on our Kellenburger grinder and then assembled the spindle in our clean room. The spindle was test run at 60,000 rpm and vibration readings were taken. Final QC checked all run outs and overall spindle condition. After the QC department signed off the spindle was shipped to our customer.

    Categories: Grinding Spindles,Okamoto Spindles

    Sandy @ 11:50 am


    Okamoto surface grinding spindleOkamoto surface grinding spindle

    This spindle failed from contamination to the front set of bearings. The taper also had 5 microns of run out. To prevent future failures from contamination Northland Tool re-engineered the front of the spindle adding a seal. This inexpensive modification could potentially increase the spindles life by many years. We then kiss ground the spindles tooling taper in our grinding department. Our technicians rebuilt the spindle to exacting tolerances and it was shipped back to our customer for installation.

    If you need solutions to problems like this please contact us at 800-774-6353 or CLICK HERE.

    Categories: Cutting Tool Industry,Grinding Spindles,Okamoto Spindles

    Sandy @ 11:35 am


    Okamoto OH-30G
    Okamoto OH-30G

    Okamoto OH-30G

    Rear bearing failure from high belt tension. As the customer increased their feed rates the load to the spindle increased. Coolant splashing on the belt and pulley surface and a worn belt caused the belt to slip. The quick fix was to tighten the belt. This solved the slip problem but eventually caused the rear bearings to fail. A new belt is always cheaper than a spindle repair.
    Categories: Bearing Manufacture Industry,Grinding Spindles,Okamoto Spindles

    Sandy @ 8:19 am


    Okamoto Workhead
    Okamoto Workhead

    Okamoto Workhead

    The workhead spindle is often overlooked when spindle repair is being considered. The frequency of repair is certianly much less than the wheelheads but it is crucial to have a properly functioning workhead to get to optimum performance from your machine.
    Categories: Grinding Spindles,Okamoto Spindles,Workhead Spindles

    Sandy @ 7:49 am


    Okamoto PFG 6-12
    Okamoto PFG 6-12

    Okamoto PFG 6-12

    3600 rpm
    Surface grinder
    Okamoto surface grinders fail frequently from coolant contamination. Northland Tool & Electronics can modify the spindle to incorporate a seal that prevents the majority of coolant contamination. This increases your spindle life significantly.
    Categories: Grinding Spindles,Okamoto Spindles,Recreational Vehical Industry

    Sandy @ 7:33 am


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