Southbend SB1055F 16" X 60" w/DRO Benutzerhandbuch

-40-

For Machines Mfg. Since 3/11

16-Speed Gearhead Lathe

This tailstock uses a quill with an MT#4 taper 

that has a lock slot in the back of the bore that 

accepts tang arbors and drill bits (see Figures 

47–48 for examples).

However, other tooling without tangs, such as 

the four remaining tools shown in Figure 47, 

can still be used if the potential load will not 

override the strength of the tapered fit. For 

example, smaller drill chucks, drill bits, and 

centers.

Note: If the tooling has an open hole in the end 

but is too short to be exposed in the drift slot 

for removal, then a screw can be threaded into 

the end of the tool to provide a solid surface for 

the quill pin to push against when the quill is 

retracted for tool removal.

1.  With the tailstock locked in place, unlock the 

quill, then use the handwheel to extend it 

approximately 1".

2.  Thoroughly clean and dry the tapered 

mating surfaces of the quill and the center, 

making sure that no lint or oil remains on 

the tapers.

Note: If the tapered tool shaft has a tang, align it 

with the indent in the back of the quill before 

seating it.

3.  With a firm and quick motion, insert the 

tool into the quill. Check to see if it is firmly 

seated by attempting to twist it—a firmly 

seated tool will not twist.

4.  Unlock the tailstock and move it until the tip 

of the tool is close to, but not touching, the 

workpiece, then re-lock the tailstock.

  Start spindle rotation, unlock the quill, then 

turn the tailstock handwheel clockwise to 

feed the tool into the workpiece.