INSTRUCTIONS & PARTS LIST
B -0009500-
0067
20C DEAD-LENGTH
®
STEP CHUCK
Stop Rod
Spring Retainer
Nut
Nut
Outer Collet
Stop Body
Belleville Springs (2)
Coil Spring
1-1/8"
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1-1/8"
Stop
Rod
Nut
S
to
p
Bo
dy
D.L. Step Chuck
Stop
Rod
Drive Pin
QUICK START
Quick Start instructions quickly guide
you through the procedure. Read the
main instructions first to thoroughly un-
derstand how to use the product.
• Clean parts & headstock
spindle
• Set face of Stop Rod 1-1/8"
from Stop Body face & secure
• Thread & Secure Stop Rod-
Body Assembly into D.L. Step
Chuck
• Coat Bearing surfaces with
Molybdenum Disulfide grease
• Assemble and secure Spring
Retainer into Outer Collet
• Insert D.L. Step Chuck-Stop
Assembly into Outer Collet
Aligning Pin with slot in Outer
Collet Face
• Slide Belleville Washer
Springs on Stop Rod
• Slide on the Coil Spring &
lock finger tight with the Nut,
fully compressing coil spring,
then back off one full turn
MAIN INSTRUCTIONS
•
Clean the Lathe Spindle , Draw
Tube, and the parts of the 20C
Dead-Length Step Chuck
•
Set the face of the
Stop Rod
1-1/8"
from the face of the
Stop Body.
Secure with
the
1-1/4" Hex Nu
t.
(This Dimension may
already be set from the factory.)
© Hardinge Inc. 1996
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Outer Collet
•
Thread the
Spring Retainer
into the
Outer Collet
and firmly tighten.
will insure maximum life of the mating parts.
angle of the
Outer Collet
with Molybdenum Disulfide grease (Moly-Lub). This
Step Chuck
, the internal bearing diameter and collet head
•
Coat the external bearing diameter of the
Dead-Length
•
Thread the
Stop Rod/Body Sub-
Assembly
into the
Dead-Length
Step Chuck
and tighten securely.
• Hold 1-1/4" Hex Nut of theStop Rod Sub- Assem-
bly in a vise and tighten D.L. Step Chuck using a
20C Inner Collet Spanner Wrench and turning clock-wise.
CAUTION:
Do Not grip any part of the Step Chuck body in the
vise. The Step Chuck may be permanently distorted or break.
(
Hold the Collet with the 20C Collet Wrench [ Part No.
CL-0011759-A] and use a 1-1/4" open end wrench to tighten the
Spring Retainer.
)
TOOLS NEEDED
2 ea. 1-1/4 Open End Wrenches
1 ea. 20C Collet Wrench
1 ea. Machinist Vise
1 ea. Moly-Lub Grease
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