Grizzly g0748, g0747 owner manual Spindle Break-In, Inspections Adjustments

Spindle Break-In

Complete the spindle bearing break-in pro- cedure to prevent rapid wear and tear of spindle components once the mill is placed into operation.

The bearings and gears used in the mill are man- ufactured to very close tolerances. Before opera- tional stress is placed on these and other moving parts in the mill, complete this break-in procedure to conform these components to one another and ensure trouble-free performance from the mill.

To perform the spindle break-in procedure:

1.successfully perform all the steps in the Test Run section beginning on Page 23.

2.Make sure the spindle is at a complete stop.

3.set the spindle speed to the low range (refer to Page 33 or 35 for detailed instructions).

4.start the spindle rotation at a medium speed and let the mill run for 20 minutes.

5.stop the spindle rotation and allow the spin- dle to come to a complete stop by itself.

6.set the spindle speed to the high range, then start the spindle rotation at a medium speed and let the mill run for another 20 minutes.

7.stop the spindle rotation, and turn the mill OFF.

The spindle break-in is now complete!

Since the mill head has been moved around for shipping purposes, you will need to tram the spindle with the table to ensure a 90° alignment. Refer to the Tramming Spindle section on Page 54 for detailed instructions.

Inspections &

Adjustments

The following list of adjustments were performed at the factory before the machine was shipped:

• gib Adjustments Page 51

•leadscrew Backlash

Adjustments Page 52

Be aware that machine components can shift during the shipping process. Pay careful atten- tion to these adjustments during operation of the machine. If you find that the adjustments are not set according to the procedures in this manual or your personal preferences, re-adjust them.

Model G0747/G0748 (Mfg. Since 8/12) -25-