Southbend SB1013 Benutzerhandbuch

-66-

For Machines Mfg. Since 7/09

EVS Toolroom Lathes

After a long period of time, you may find that the 
leadscrew develops a small amount of end play. 
This lathe is designed so that leadscrew end play 
can be easily removed with adjustment.

Open End Wrench 1" ............................................ 1
Hex Wrench 3mm ................................................. 1
Hex Wrench 5mm  ................................................ 1

  DISCONNECT LATHE FROM POWER!

  Remove the three cap screws and end cover.

  Loosen both retaining nut set screws shown 

in Figure 127.

The goal of adjusting the cross slide, tailstock, 
saddle, and compound gib screws is to remove 
sloppiness in the ways without over-adjusting 
them to the point where the slides become stiff 
and difficult to move.

In general, loose gibs cause poor finishes and 
tool chatter; however, over-tightened gibs cause 
premature wear on the slide, leadscrew, and nut, 
and are difficult to operate.

The gibs are tapered and held in position by a 
screw at each end. To adjust the gib, turn one 
screw a 

1

⁄

4

 turn clockwise and the other screw a 

1

⁄

4

 turn counterclockwise, so both screws move 

toward the same direction. Now test the feel of 
the sliding component by turning the handwheel, 
and adjust the gib screws as necessary to make it 
tighter or looser.

The gib adjustment process usually requires 
some trial-and-error. Repeat the adjustment 
process as necessary until you find the best 
balance between loose and stiff movement. 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.

Figures 128–131 show the location of the screws 
for each gib on this machine.

  Engage the half nut lever.

  Rotate the carriage feed handwheel back 

slightly and tighten the retaining nut at the 
same until the end play is removed.

  Tighten both set screws and re-install the 

cover.