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Home - Products - Grippers - Collet - General - Specifications (Metric)

ASSUMPTIONS Used to Determine Maximum Payload:

System Pressure = 100 psi (6.9 bar)
Maximum Acceleration/Deceleration = 1G - 386 in/s² (9.8 m/s²)
Part Friction (µ) = 0.25



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Model	Collet Series	Collet Type	Height Dimension "A"	Base Diameter Dimension "B"	Nose Diameter Dimension "C"	Weight
C-8500	1C	Standard	72.4 mm	54.0 mm	19.1 mm	0.18 kg
C-8600	3C	Standard	106.4 mm	95.3 mm	31.8 mm	0.42 kg
C-8700	5C	Standard	130.3 mm	95.3 mm	50.8 mm	0.84 kg
*C-8700-S	5C	Standard	136.7 mm	95.3 mm	50.8 mm	0.87 kg
C-8800	5C	Standard or Expanding O.D.	142.7 mm	127.0 mm	50.8 mm	2.33 kg
*C-8800-S	5C	Standard or Expanding O.D.	149.1 mm	127.0 mm	50.8 mm	2.48 kg

Weight listed does not include collet.

* Sensors are available for RAD's 5C Collet Gripper models. The sensor option requires a magnetic piston cylinder which slightly increases the unit's overall height and weight. These sensor models are marked with a "-S" suffix.

Model	Minimum Operating Pressure	Collet Size I.D.	Collet Size O.D.	Grip Force	Pull-Out Force	Gripping Torque	Maximum Payload
C-8500	3.10 bar	0.25 to 6.35 mm	N/A	194.3 N	48.6 N	0.1 Nm	5.0 kg
C-8600	0.70 bar	0.25 to 12.70 mm	N/A	592.7 N	148.2 N	0.7 Nm	15.1 kg
C-8700	2.10 bar	0.25 to 26.97 mm	N/A	717.1 N	179.3 N	1.7 Nm	18.3 kg
C-8700-S	2.10 bar	0.25 to 26.97 mm	N/A	717.1 N	179.3 N	1.7 Nm	18.3 kg
*C-8800	0.34 bar	0.25 to 26.97 mm	3.18 to 38.10 mm	5,786.8 N	1,446.7 N	13.8 Nm	147.5 kg
*C-8800-S	0.34 bar	0.25 to 26.97 mm	3.18 to 38.10 mm	5,786.8 N	1,446.7 N	13.8 Nm	147.5 kg

* For Internal Diameter (I.D.) gripping with the C-8800, using 5C Expanding Collets, please consult RAD for application guidelines and sizing.

Force and torque values listed above are based on testing performed using collets sized at approximately 75% maximum I.D.
Results will vary based on collet size, variations in air pressure, frictional coefficients, etc. In general, using larger sized collets will provide more grip force than smaller collets of the same series.

RAD products are also known as robot arm, robot arms, robotic arm, robotic arms, robot end effector, robot end effectors, robotic end effector, robotic end effectors, robot end of arm, robotic end of arm, robot tool, robot tools, robotic tool, robotic tools, robot tooling, robotic tooling, rad, robot accessories and robotic accessories.

RAD Grippers are also known as robot gripper, robot grippers, robotic gripper, robotic grippers, robot parallel gripper, robot parallel grippers, robotic parallel gripper, robotic parallel grippers, robot pneumatic gripper, robot pneumatic grippers, robotic pneumatic gripper and robotic pneumatic grippers.

RAD products can be used on robots, linear actuators, gantry equipment, pick & place machines and other automation equipment.