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G8143 Collet Closer -7-
Locking Stroke
To adjust the locking stroke on your collet
closer:
1. Position the locking pawls so they are in the
correct position on the cam as shown in
Figure 12.
2. Secure the 38mm spanner nut against the
outboard side of the bearing housing and
then secure the 30mm spanner nuts against
the 38mm spanner nut as shown in Figure
13. Note—Be sure that the 30mm spanner
with the setscrew is on the outside, with the
setscrew accessible.
Figure 12. Locking pawls in locked position
on the cam lobe.
Figure 13. Spanner nut positioning for locking
stroke adjustment.
30mm spanners
Locking Pawl
38mm spanner
E
Figure 14. Stroke adjustment assembly.
The mechanism that controls the stroke is depict-
ed in detail in Figure 14.
3. The two 30mm spanners define the stroke
distance. Secure the setscrew in the outer
30mm spanner nut to lock the stroke dis-
tance.
Make sure proper turning clearance exists
between the bearing casing and the locking
yoke before operation. Serious personal
injury or damage to the lathe and collet
closer can occur if there is contact. Rotate
draw tube and check for clearance. DO NOT
make adjustments, remove workpiece or
open back cover of lathe while the machine
is in motion.