Motor City Spindle Repair tests all the spindles we remanufacture. All spindle testing procedures are documented and available for our customers to review. The final inspection results are printed and placed both inside the container the spindle is shipped in, and also stapled to the outside of the contained.
We run each spindle for 30 minutes while continuously checking to make sure spindle bearing temperatures do not exceed 120 degrees.
If any spindle bearing temperature exceeds 120 degrees the spindle is stopped and allowed it to cool to ambient temperature or allowed to completely cool below 80 degrees.
Vibration readings of all spindle bearings signatures are used to verify they are within the oem specification.
We take balance readings of the spindle assembly in both the front and rear bearing locations to verify proper balance.
If all spindle bearing temperatures remain below 120 degrees, bearing signatures and balance are all within oem specification we then increase spindle rpm by 5%.
We repeat this entire process by increasing rpm at intervals of (10%) until maximum rpm is achieved.
Once maximum rpm is achieved, all spindles are test run for an additional (2) hours. Both front and rear (or top and bottom) spindle bearing vibration signatures are verified to be within specification. Balance is also rechecked and verified to be within specification.
RUN IN PROCEDURE
- Start spindle at 10% of maximum rpm
- Run spindle for 30 minutes while continuously checking all spindle bearing temperatures do not exceed 120 degrees.
- If any spindle bearing temperature exceeds 120 degrees stop spindle and allow it to cool to ambient temperature or completely below 80 degrees.If all spindle bearing temperatures remain below 120 degrees increase spindle rpm by 10%.
- Repeat this process by increasing rpm at intervals of (10%) the maximum rpm until the maximum rpm is achieved. If at any time any spindle bearing temperature exceeds 120 degrees stop the spindle and allow the bearing temperature for the entire spindle to drop to ambient temperature or below 80 degrees.Once maximum rpm is achieved run the spindle for an additional 45 minutes before putting the spindle into production and do not allow bearing temperatures to ever exceed 120 degrees. If they do restart entire run in procedure.
- It is not uncommon while breaking in spindle bearings that a spindle must be stopped and allowed to cool until the bearings are “tracking” properly.If you have any questions please give us a call at (734) 261-8600