Southbend SB1059F User Manual

Page of 140
For Machines Mfg. Since 3/11
EVS Toolroom Lathe w/DRO
-39-
O P E R A T I O N
Figure 33. Registration mark locations.
Camlock
Spindle
2-Piece 
Direct Mount
Camlock Chuck
Marks
for Chuck 
Reassembly
Chuck
Halves
Spindle & Chuck
Registration Marks
Registration Marks
Lightly stamp registration marks across the 
mating seams of chuck components. These marks 
will help you re-install the chuck in the same 
position after removal, which ensures consistent 
chuck balance and turning results, and allows 
the same camlocks and studs to operate together 
for consistent locking and unlocking.
Figure 34. Camlock is fully loosened when the cam 
line is aligned with the spindle mark.
Cam line aligned with spindle mark
Chuck Removal
7.
 
Verify that the chuck fits the spindle 
properly by checking for any gaps between 
the mating surfaces.
— If there are no gaps, proceed to Step 8.
— If there is a gap, remove the chuck, re-
clean the mating surfaces carefully, and 
re-install. If the problem persists, contact 
our Tech Support.
8.
  Verify that the chuck/spindle tapers 
are seated firmly together by removing 
the chuck, per the Chuck Removal 
instructions, and pay close attention to how 
easily the tapers release.
— If it was necessary to bump the chuck or 
use a mallet to release the tapers, then 
they are seating together properly.
— If the tapers released easily with little 
intervention, they are not seated together 
firmly as required. Remove the chuck, re-
clean the mating surfaces carefully, and 
re-install. If the problem persists, contact 
our Tech Support.
To remove the chuck:
1.
  DISCONNECT LATHE FROM POWER!
2.
  Use an appropriate lifting, support, or 
protective device to protect the ways and 
support the chuck (refer to Installation & 
Removal Devices
 on Page 37).
3.
  Loosen the camlocks by turning the key 
counterclockwise until each of the cam lines 
are aligned with its corresponding spindle 
mark (see Figure 34).
Tip: 
Camlocks can become very tight. A cheater 
pipe may be used as a last resort to add 
leverage when loosening. After loosening, 
you may need to wiggle the chuck key in the 
camlock to fully disengage the stud.
4.
  Using a dead blow hammer or other 
soft mallet, lightly tap around the outer 
circumference of the chuck body to loosen it 
from the spindle.
5.
  Remove the chuck from the spindle, using 
a light rocking motion to carefully slide the 
studs out of the cam holes.
— If the chuck does not immediately come 
off, rotate it approximately 60° and tap 
it again. Make sure all the marks on the 
cams and spindle are in proper alignment 
for removal.