Grizzly G4000 manual Adjustments, Spindle RPM

SECTION 6: ADJUSTMENTS

Spindle RPM Gibs

Spindle R.P.M. - Spindle RPM’s are controlled through a series of pulleys. To adjust the speed on the Model G4000, shut the machine off and unplug it, open the side-cover on the headstock. Figure 23. Release pressure with the belt ten- sion lever and attach the drive belt to the pulley combination desired. There is a belt position dia- gram and a RPM chart on page 28 and 29.

Figure 23. Pulley and gear box.

There are two main gib adjustments for the Model G4000. They are: the cross-slide gib and the compound slide gib.

Cross-slide Gib - The gib on the cross slide is adjusted by the setscrews at the side of the cross slide. To adjust, loosen the check nuts holding the setscrews in place, tighten the setscrews until excess movement is eliminated and tighten the check nuts. Figure 24.

NOTICE

When adjusting gibs, keep in mind that the goal of gib adjustment is to remove unneces- sary sloppiness from the slide’s movement without causing them to bind. Overtightening may cause premature wear.

Figure 24. Cross slide gib adjustment.

-18- G4000 9'' x 19'' Lathe