Hardinge 3C User manual

1
3C Low-Pressure Dead-Length Collet Blocks Instructions B-143
Hardinge Inc. One Hardinge Drive, Elmira, NewYork U.S.A. 14902-1507 800.843.8801 (Canada 800.468.5946) www.hardingetooling.com
Part No. B -0009500-0143
3C Collet Block
Low-Pressure, Pneumatic or Hydraulic, Double Acting, Dead-Length
Part No. 7799-00-00-000089
Specifications
• Maximum operating pressure – 250 psi air, 750 psi hydraulic
(17 bar air, 51 bar hydraulic)
• Draw tube force – 1.2 x line pressure
• Collet capacity – 3C {1/64” to 1/2” (.39 to 12.7mm) round}
• Thru-hole in base
• Four 1/4-20 mounting holes in bottom of base
• Two 3/16" (4.76mm) dowel holes in bottom of base
• Two 1/8-27 NPT ports
• 2-position, 4-way control valve recommended for hydraulic operation,
2-position, 3-way control valve recommended for pneumatic operation (not included)
Safety
• Do not over tighten the mounting hardware or the plumbing fittings.
• When installing a collet in the closer, do not over tighten the collet.
• Do not exceed maximum operating pressure of 250psi air or 750 psi hydraulic (17 bar air, 51 bar hydraulic)
• Make sure that the collet retains your material when the closer is closed.
Application
This 3C collet block is a stationary unit with a double-acting cylinder. It is effective on machine and assembly operations that
require reliable clamping and unclamping. Use the collet block as a single unit or mount multiple closers on rotary tables,
pallets, fixtures or tombstones for increased productivity.
Installation
1. Mount the collet block to a rigid flat surface.
2. Plumb your first supply line using 5000 psi (344 bar) rated steel tubing to the CLAMP 1/4 NPTF port of the
collet block and the normally OPEN 1/4 NPTF port of your control valve.
3. Plumb your second supply line using 5000 psi (344 bar) rated steel tubing to the UNCLAMP 1/4 NPTF port of
the collet block and the normally CLOSED 1/4 NPTF port of your control valve.
4. Plumb your control supply to the 1/4 NPTF pressure port of the valve.
5. This configuration maintains a closed collet until the valve is actuated.
Operation
1. Remove the supply from the valve.
2. Loosen the collet locking screw.
CLAMP
UNCLAMP

2
3C Low-Pressure Dead-Length Collet Blocks Instructions B-143
Hardinge Inc. One Hardinge Drive, Elmira, NewYork U.S.A. 14902-1507 800.843.8801 (Canada 800.468.5946) www.hardingetooling.com
Part No. B -0009500-0143
TOP
VIEW
BOTTOM
VIEW
3. Insert the collet in the top of the collet block.
4. Using the collet wrench, turn the collet clockwise until it contacts the piston taper.
5. Tighten the collet locking screw. Do not overtighten.
6. To close the collet closer, insert a workpiece in the collet, and connect the supply to the valve.
WARNING: Do not close the closer without the workpiece in the collet.
7. Adjust your supply pressure to a level that assures effective workholding only. Continuously operating the closer at
maximum pressure will decrease the service life of the seals and collet.
8. To open the collet, actuate the valve.
Maintenance
If, over a period of time, you experience a decrease in clamping force even though pneumatic or hydraulic pressure remains
unchanged, remove the collet block from service, disassemble, and replace any damaged or worn o-rings.
Warranty
The products furnished hereunder are guaranteed by Hardinge Inc. against any defect in material or workmanship for a
period of one (1) year from date of shipment when owned by original buyer or first user, and maintained and operated
under normal conditions. Any products hereunder not manufactured by Hardinge Inc. are warranted only to the extent of
the original manufacturer’s warranty. Parts found to be defective in material or workmanship under this guaranty shall be
repaired or replaced without charge, F.O.B., original point of shipment provided prompt notice of the defect is given and
compliance with the terms of this guaranty are established. HARDINGE INC. SHALL BE LIMITED STRICTLY AND
WHOLLY TO THE FOREGOING.
In no event shall Hardinge Inc. be liable for consequential or incidental damages or for other costs, expenses, or damages
incurred by you attributed to any item sold hereunder.
2.0000''
(50.8mm)
+.0010
-.0000
+.0254
-.0000
2.500''
(63.5mm)
COLLET LOCKING
SCREW
2.500''
(63.5mm)
COLLET LOCKING
SCREW
1.250''
(31.7mm)
2.749''
(69.8mm)
CONNECTOR BUSHING
PORTS, 6X
1.875''
(47.6mm)
CLAMP
UNCLAMP
1.250''
(31.7mm)
1.875''
(47.6mm)
.750''
(19mm) 1/8-27 NPT
SUPPLY PORTS,
2X
.188'' (4.7mm) DOWEL
LOCATING HOLES,
2X
2.000''
(50.8mm)
1/4-20 MOUNTING HOLES,
4X
1.0000''
(25.4mm)
+.0005
-.0000
+.0127
-.0000

3
3C Low-Pressure Dead-Length Collet Blocks Instructions B-143
Hardinge Inc. One Hardinge Drive, Elmira, NewYork U.S.A. 14902-1507 800.843.8801 (Canada 800.468.5946) www.hardingetooling.com
Part No. B -0009500-0143
CLAMP
UNCLAMP
PNEUMATIC
CONTROL VALVE
#7799-00-00-000065
PNEUMATIC
COLLET CLOSERS
(double-acting) AIR SUPPLY
FIXTURE PLATE
Example of a simple pneumatic configuration
Components include a control valve and three pneumatic collet blocks supplied by Hardinge mounted on a customer
machined fixture plate. Two connector bushings are used between each collet block for internal plumbing. A total of four
connector bushings would be used in this example. (schematic shown in clamp position)
Dimensions for mounting holes are available on the installation instructions online at www.hardingetooling.com

4
3C Low-Pressure Dead-Length Collet Blocks Instructions B-143
Hardinge Inc. One Hardinge Drive, Elmira, NewYork U.S.A. 14902-1507 800.843.8801 (Canada 800.468.5946) www.hardingetooling.com
Part No. B -0009500-0143
AIR SUPPLY
4-WAY, 2-POSITION
CONTROL VALVE
#7799-00-00-000071
AIR DRIVEN HYDRAULIC PUMP
1500 PSI #7799-00-00-000070
2500 PSI #7799-00-00-000069
PRESSURE
RETURN
CLAMP
UNCLAMP
HYDRAULIC
COLLET CLOSERS
(double-acting)
AIR SUPPLY
PRESSURE
RETURN
AIR DRIVEN HYDRAULIC PUMP
1500 PSI #7799-00-00-000070
2500 PSI #7799-00-00-000069
HYDRAULIC
COLLET CLOSERS
(double-acting) ACCUMULATOR
#7799-00-00-000068
HORIZ MOUNT
#7799-00-00-000067
QUICK
DISCONNECT
HANDLE
#7799-00-00-000075 STD. MANIFOLD
WITH CHECK VALVE
#7799-00-00-000074
FIXTURE
PLATE
CLAMP
UNCLAMP
4-WAY, 3-POSITION
CONTROL VALVE
#7799-00-00-000072
Example of a typical hydraulic configuration
Components include a pump, control valve and three hydraulic collet blocks supplied by Hardinge mounted on a customer
machined fixture plate. (schematic shown in clamp position) 5000 psi (344 bar) rated hose/tubing is recommended.
Dimensions for mounting holes are available on the installation instructions online at www.hardingetooling.com
Example of a quick disconnect hydraulic configuration
Components include a pump, control valve, accumulator, quick disconnect handle, manifold with check valve and three
hydraulic collet blocks supplied by Hardinge on a customer machined fixture plate. The control valve should mount outside
of the machine with the pump or on the outside wall of the machine. The quick disconnect with check valve allows you to
remove the hydraulics while in the clamp mode – ideal for preloading pallets. An accumulator is required when using the
quick disconnect product. (Schematic shown in the clamp position) 5000 psi (344 bar) rated hose/tubing is recommended.
Dimensions for mounting holes are available on the installation instructions online at www.hardingetooling.com