Southbend sb1016 owner manual Saddle Gibs, To adjust the saddle gibs

For Machines Mfg. Since 7/09 S E R V I C E Model SB1016/SB1036

Saddle Gibs

The saddle on this lathe is equipped with opposing gibs that lie parallel with one another on either side of the saddle. To tighten the saddle and remove play, the front gib must move toward the tailstock, and the rear gib must move toward the headstock.

Tools Needed:	Qty
Hex Wrench 6mm	1
Standard Screwdriver #3	1

To adjust the saddle gibs:

1.DISCONNECT LATHE FROM POWER!

2.Remove the thread dial shown in Figure 137 by removing the lock knob.

4.To tighten the front saddle gib (Figure 141) and move it toward the tailstock, loosen the tailstock-facing gib screw 1⁄4-turn, and tighten the headstock-facing gib screw 1⁄4-turn.

Gib

Screw

Carriage

Lock

Carriage

Lock Block

Thread

Dial

Knob

Figure 139. Location of carriage lock and half nut for

removal.

3.Remove the carriage lock and the carriage lock-block shown in Figures 137–140.

Carriage

Lock-Block

Hidden

Gib Screw

Figure 140. Gib screw access.

Figure 141. Front saddle gib screw.

5.To tighten the rear saddle gib (Figure 142) and move it toward the headstock, loosen the headstock-facing gib screw 1⁄4-turn, and tighten the tailstock-facing gib screw 1⁄4-turn.

Gib

Gib

Screw

Figure 142. Rear saddle gib and screw.

6.Test the feel of the carriage by turning the handwheel. Re-adjust the gib screws in the same manner to tighten or loosen the gibs. Most machinists find that the ideal gib adjustment is one where a small amount of drag or resistance is present yet the handwheels are still easy to move.

7.Reinstall carriage lock and the thread dial.

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