Hardinge FlexC Low Profile Dead-Length Collet System Style... Datasheet

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65mm FlexC™ Collet System Style DL Instructions B-177
Hardinge Inc. One Hardinge Drive, Elmira, New York U.S.A. 14902-1507 800.843.8801 www.ShopHardinge.com
Part No. B 00095000177
Hardinge FlexC™ Low Prole
Dead-Length®Collet System
Style DL — 65mm
Installation Instructions and Parts Lists
GENERAL SAFETY INFORMATION
Before installing the Hardinge®FlexC™Collet System on your
machine tool, thoroughly read this manual and understand the
information. If you are uncertain about any of the information,
see your immediate supervisor. Also make certain that you
understand the information in your machine tool operator’s,
programmer’s and maintenance manuals.
NOTICE
• Damage resulting from misuse, negligence or accidents is not
covered by the Hardinge FlexC™warranty.
• Information in this document is subject to change without
notice.
• In no event will Hardinge Inc. be responsible for indirect or
consequential damage resulting from the use or application of
the product, or any of the information in this document.
• This product is only to be used by trained machinists skilled in
the use and operation of collet systems and collet chucks on
metal cutting machines.
SAFETY REQUIREMENTS TO THE TURNING MACHINE
• Check to see that the workpiece is properly gripped and seated
in the collet head before beginning the machining cycle.
• Do not unclamp the workpiece until the machining cycle has
come to a complete stop.
• Observe all safety precautions indicated in the machine manual
when operating the machine including the use of guards and
keeping the door closed during machining.
• Do not exceed the maximum operating force and RPM for the
Hardinge FlexC Collet Systems indicated below:
– Maximum operating force: 10,100 lb (45KN)
– Maximum RPM: 6,000

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65mm FlexC™ Collet System Style DL Instructions B-177
Hardinge Inc. One Hardinge Drive, Elmira, New York U.S.A. 14902-1507 800.843.8801 www.ShopHardinge.com
Part No. B 00095000177
PRODUCT DESCRIPTION AND USE
The Hardinge FlexC style DL Collet System consists of a spindle
mount assembly. Vulcanized collet heads and wrenches are
purchased separately. The style DL Dead-length®Collet System
can be used as a thru-hole for bar work or with a work stop for
chucking. The clamping heads consist of hardened steel segments
that are joined together by a vulcanization process. Their
outstanding characteristics include parallel workpiece clamping,
superb accuracy with a minimum of deformation of the work
piece, and quick-change capability. If the Hardinge FlexC style DL
Collet System is used as a dead-length system the work stop is
inserted into the body and secured with three set screws. When
part length control is not required the work stop can be removed.
The Hardinge FlexC style DL 65mm Collet Systems use a
push-to-close design with an axially-xed collet head. They are
ideally suited for sub-spindles to maintain length control during
secondary operations. The push-to-close design also avoids axial
stress between the spindles. The collet head is xed in the body,
while the drawbar moves forward and closes the collet head.
CAUTION
Make sure that the workpiece is adequately gripped so that the
workpiece will not come loose during the machining process.
When clamping very short workpieces, the minimum clamping
lengths must be observed. They depend on the selected clamping
head size and shape – call Hardinge for guidance. Do not clamp
tapered work pieces. In general the collet system should never be
rotated without a clamped workpiece. Never rotate the collet
system over 2,000 RPM without a clamped workpiece. When
actuating the changing wrench, never reach inside the moving
parts for risk of severely damaging your hand.
DRAWBAR LINKUP
The Hardinge FlexC Collet System requires a drawbar linkup to
mate the specic machine drawbar (varies by machine brand and
model) to the FlexC clamping sleeve. This linkup can be ordered
from Hardinge or can be made by the customer.
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. Inspect
the six fastening screws to ensure a torque of 7.375 ft-lb
(10Nm). Tighten if necessary.
Clean and inspect the machine spindle and the spindle
adapter. Mount the spindle adapter to the machine spindle
using the six fastening screws. For A2 style spindles, orient
the spindle adapter with the drive button. Tighten the
fastening screws in a criss cross pattern to the appropriate
torque shown in the parts list. Flat back spindles must be
indicated before you torque the bolts to specication.
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 or until you have .203" gap between
spindle adapter and body. 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 mounting screws equally to 26 ft-lb (36Nm) torque in a
criss cross pattern.
Increase the clamping pressure to sufcient force for the job.
spindle
adapter
collet seat
assembly

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65mm FlexC™ Collet System Style DL Instructions B-177
Hardinge Inc. One Hardinge Drive, Elmira, New York U.S.A. 14902-1507 800.843.8801 www.ShopHardinge.com
Part No. B 00095000177
CHECKING THE FINAL CONCENTRICITY
OF THE COLLET CLOSING TAPER
Locate the probe to touch the inside closing taper of the body to
verify concentricity. 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.
CLEANING AND MAINTENANCE
The spindle, collet head and the spindle mount mating surfaces
must be cleaned and free of chips and sludge whenever mounting
to the spindle or changing out a collet head. Visually inspect
collets for tearing or separation of rubber on a regular basis
during long job runs and during setup. If you are using a high
pressure coolant in your machining processes, you need to inspect
the collets more frequently. Do NOT clean an open spindle with
an air hose as chips and sludge may be forced into the spindle
drawbar area. Clean and lubricate all moving parts with Chevron
Ultra-Duty EP NLGI 2, Dow Corning BR-2-Plus, or Kluber
ALTEMP Q NB 50 grease. Store all unused products properly
to prevent corrosion and keep free of dust and environmental
particles.
Check to see that all mounting screws are in good condition
and replace when worn. All components must be replaced with
original Hardinge replacement parts.
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 collet seat. Insert applying
light pressure. Orient the keyway in the collet head with the key 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.
REMOVING OR CHANGING THE WORK STOP
Follow the previous instructions to remove the collet head before
changing the work stop. The collet head must be in the unclamp
position. Reach in and remove the seal and set it aside.
To remove the work stop you must turn the 3 pipe plugs
counterclockwise to remove them. Loosen the 3 set screws
counterclockwise 2 full turns. Grasp the stop rod and pull
forward.
Make any adjustments for the next job and insert the work stop
using the rod. Now carefully tighten the 3 set screws clockwise
until you feel resistance. Hand tightening is sufcient, DO NOT
over tighten. Applying to much pressure can damage the set
screws. If you are not using the worktop, remove the 3 set screws
and insert the 3 pipe plugs. Remember to replace the seal before
inserting you collet head. Failure to use the seal may cause
malfunction of the collet system.
release
button
keyway

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65mm FlexC™ Collet System Style DL Instructions B-177
Hardinge Inc. One Hardinge Drive, Elmira, New York U.S.A. 14902-1507 800.843.8801 www.ShopHardinge.com
Part No. B 00095000177
1 V65 6DL05832 Body
2 V65 6DL05837 Spacer
3 V65 6DL05833 Closing sleeve
4 MS 0103818 Screw, shcs, M8x1.25x20mm
5 V65 01237 Key screw
6 5-0001467 1/8-27 NPT pipe plug
7 V65-6DL11601 Seal for FlexC 65 Dl
8 OR 0007678 Parker 2-048 o-ring
9 OR 0006571 Parker 2-156 o-ring
10 OR 0004446 Parker 2-039 o-ring
13 MS 0103527 Screw shcs M5X.8X65mm
14 V65 6DL05836 Threaded part stop
A2-5 Assembly
11 V65 5DL05731 Mounting plate
12 V65 6DL05838 Clamp sleeve
15 MS 0104018 Mounting bolts (40 ft/lb.)
A2-6 Assembly
11 V65 6DL05831 Mounting plate
12 V65 6DL05848 Clamp sleeve
15 MS 0104218 Mounting bolts (60 ft/lb.)
A2-8 Assembly
11 V65 8DL06031 Mounting plate
12 V65 6DL05834 Clamp sleeve
15 MS 0104621 Mounting bolts (60 ft/lb.)
140 mm Assembly
11 V65 140DL02431 Mounting plate
12 V65 6DL05838 Clampling sleeve
15 MS 0104019 Mounting bolts (40 ft/lb.)