8
65mm FlexC
™
Collet System Style DL
Instructions B-152C
Hardinge Inc. One Hardinge Drive, Elmira, New York U.S.A.
1
4902-
1
507 800.843.8801 (Canada 800.468.5946) www.shophardinge.com
Par
t No
. BC -0009500-0152
Installation
The spindle adapter and collet seat assembly are shipped assembled. The spindle
adapter must be separated from the body by removing the six mounting screws
#18. Inspect the six fastening screws #21 to ensure a torque of 7.375 ft-lb
(10Nm). Tighten if necessary.
Clean, inspect and grease the machine spindle and the spindle adapter. Mount the
spindle adapter to the machine spindle using the four fastening screws #20. For A2
style spindles, orient the spindle adapter with the drive button. Tighten the fasten-
ing screws to the appropriate torque shown in the parts list. Flat back spindles
must be indicated before you torque the bolts to specification.
Check the concentricity and face runout of the spindle adapter before mounting the
collet seat assembly. Neither should exceed .0002" (5µm). If the indicator reading is more than
.0002" (5µm), remove the spindle adapter and clean the surfaces again before remounting.
Reduce the clamping pressure of the machine to a minimum and extend the drawbar to the forward position. Carefully
screw the collet seat assembly onto the drawbar clockwise until it bottoms out.
DO NOT TIGHTEN.
Rotate the body
counterclockwise until the clearance holes in the body line up with the threaded holes on the spindle adapter. Carefully
move the drawbar backwards and seat the collet seat assembly into the spindle adapter. Insert and tighten the six mount-
ing screws #18 equally to 26 ft-lb (36Nm) torque.
Increase the clamping pressure to sufficient force for the job.
Checking the Final Concentricity of the Collet Closing Taper
Locate the probe to touch the inside closing taper of the body to verify concentricity. This should not exceed .0006"
(15µm). If the indicator reading is more than .0006" (15µm), remove the body and clean the surfaces of the spindle adapter
and the body again before remounting. Check the concentricity again and repeat this step until the desired reading is met.
Concentricity may be affected if using stock beyond the nominal gripping range.
Installing a Collet Head
Installing or changing of the collet head is possible only
when the chuck is in the unclamped position. Prior to
inserting the collet head you must clean the taper of the
collet seat and the mating taper of the collet head.
Fully insert the pins of the manual wrench into the holes
in the face of the collet head. Actuate or pull the lever
to collapse the segments before inserting it into the col-
let seat. Insert applying light pressure. Orient the keyway
in the collet head with the key #9 in the collet seat. To
release the collet head from the manual wrench you
must press on the release button.
CAUTION:
When actuating the manual wrench never
reach inside the moving parts where there is risk of
injury to your hand. Clean and lightly oil the collet head
and the body before installing.
release
button
keyway
spindle
adapter collet seat
assembly
