Grizzly g0669X owner manual Adjusting Gibs, Table, Saddle, and Knee Gibs

Adjusting Gibs

Gibs control the accuracy of table and ram move- ments along the ways. Tight gibs make the move- ments more accurate, but harder to move. Loose gibs make the movements sloppy, but easier to move. The goal of gib adjustment is to remove unnecessary sloppiness without causing the ways to bind.

NOTICE

Excessively loose gibs may cause poor workpiece finishes, and may cause undue wear of sliding surfaces and ways. Over- tightening the gibs may cause premature wear of these sliding devices.

Table, Saddle, and Knee Gibs

Each sliding surface for the table, saddle, and knee has a tapered gib that is sandwiched between the stationary and moving surfaces. The saddle and knee have a gib on both sides of the device. There are two adjustment screws, one on each end of each gib, that move the tapered gib back and forth increasing or decreasing friction of the sliding surfaces.

DISCONNECT THE MILL FROM POWER BEFORE ADJUSTING THE GIBS!

Loosen one adjustment screw and tighten the other the same amount to move the gib until you feel a slight drag in that path of movement.

Refer to Figures 62–64for the locations of the table, saddle, and knee gib adjustment screws.

Table Gib

Adjustment Screw

(1 of 2)

Figure 62. Table gib adjustment screw (view of

left screw).

Saddle Gib

Adjustment Screw

(1 of 4)

Figure 63. Saddle gib adjustment screw (view of

right front screw).

Knee Gib

Adjustment Screw

(1 of 4)

Figure 64. Knee gib adjustment screw (view of

right top screw).

-46- G0669X Precision 10" x 54" VS Milling Machine