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Nut
Boring Out the Dead-Length
Step Chuck on the Lathe
QUICK START
Boring Out -D.L. Step Chuck
•
Insert
Dead Length Step Chuck & Stop Sub-Assembly
into the
Outer Collet & Spring Retainer Sub-Assembly
.
Align the
Drive Pin
(shown on front page, 1st Figure)
in the Step
chuck with the
Slot
in the face of the
Outer Collet
.
•
Slide the 2
Belleville Spring
Washers on the T
hreaded
Stop Rod
with the small end of the first washer towards
the
Spring Retainer
and the Large end of the second
washer flush with the large end of the first washer, as
Illustrated.
•
Slide the compression
Coil Spring
on to the
Stop Rod
up
against the
Belleville Spring Washer
.
•
Thread the Hex
Nut
on the
Stop Rod
by hand to completely
compress the
Coil Spring
, then back the
Nut
off one full turn.
•
Place the three 1/8" diameter x 3/4" long
pins in the holes on the face of the Dead-
Length Step Chuck. (A small amount of
grease on each pin will hold them in
place.)
•
Activate Closer to Open Position
•
Slide the Dead-Length assembly into the
spindle of the machine aligning the
spindle key with the keyway on the Outer
Collet.
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Nut
Coil
Spring
Beleville Springs (2)
Outer Collet & Spring
Retainer Sub-Assembly
Dead Length Step Chuck
& Stop Sub-Assembly
Slot
• Place 3 Pins in face of step
chuck
• With closer in "Open" position,
slide D.L. Step Chuck into
spindle aligning Key
• Adjust Closer until back face of
D.L. Step Chuck just Contacts
spindle face
• Turn Closer 1/2 Turn more &
Continue to next screw hole.
• Tighten Screws in Closer
• Adjust pressure: Low to Moder-
ate force - Approx. 3,000 Lbs.
• Drill, rough bore ,and finish bore
for the workpiece
• Remove & thoroughly clean
• Remount & Adjust Pressure on
the workpiece: Max. 5,000 Lbs.
MAIN INSTRUCTIONS
(Continued)
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