High Precision Turning Air Chuck

Turning or rotating precision air chucks are designed to be mounted on any CNC turning and conventional machine. The speed for rotating precision air chuck is up to 6000 rpm.  Other sizes are available upon request. Controlled clamping force enables clamping of thin-walled and other fragile parts with no distortion. Most models come with coolant or air passage through the center of the chuck.

It is very simple to mount the air chuck on the lathe machine. An experienced operator can do it less then 30 minutes. Simple loading and unloading.
Most chucks come with 2, 3, or 4 jaws as standard. Most standard models are available in inventory.
The chuck repeatability is 0.002MM or 0.0001".
Chuck size ranges from 50MM to 350MM or 2" to 14".

Explanation on the models: (please read carefully to avoid confusion)

Example: 150-3-2.5 NBC.

It is a Ø150MM chuck

The number 3 represents the number of jaws that could be 2, 3, or 4 jaws, depends on the model.

2.5MM is the chuck stroke. In this case 2.5MM on DIA.

NBC - is the the model. There are two models per the explanation below.

BC Model – The chuck's piston has an inner movement back and forth together with the air feed tube (AFT). This is a safety feature that is required by CE, the European standard. It allows a slight delay after opening and closing of the jaws, before the machine starts its cycle. When the AFT moves forward, the jaws close/clamp the workpiece. Only then, the machine will receive a green light from the proximity sensor to start the cycle.

NBC Model – The Piston movement is internal only. In this model, coolant is available through the chuck body. The chuck is more stable hence rotate on higher rpm.

To summarize: if a BC model chuck is required, 100MM with two jaws, the model number will be: 100-2-2.5 BC

Mechanical parameters in MM

Technical parameters

*Calculated with top steel jaws H=16MM
** Calculated with top steel jaws H=25MM
***Calculated with top steel jaws H=50MM

200-4-2.5 BC model, 200MM or 8 inch, 4 jaw high precision air chuck

200-3-2.5 NBC model, 200MM or 8 inch, 3 jaw high precision air chuck

50-3-2 BC model, 50MM or 2 inch, 3 jaw high precision turning air chuck

		PML-PAL precision air chuck is installed on a Mazak Ravema at a customer site in Sweden. The above photo shows the machine back side with the air feed tube (AFT) mounted.

Ultra High Precision Pneumatic Chuck  KPC Series

Specification and Product data are available. CAD free download.

Click the picture to enlarge

KPC Series Built-in pneumatic cylinder. High Speed. Suitable for thin wall or finish machining.

Model		KPC803C100	KPC43C048	KPC43C100	KPC63C100
Thru-hole Diameter (mm)		-	-	-	-
Gripping Range (mm) O.D.	Max.	70	87	87	135
	Min.	3	3.5	3	3
Gripping Range (mm) I.D.	Max.	79	99	99	149
	Min.	6	6	6	6
Jaw Stroke Diameter (mm)		2.5	1.2	2.5	2.5
Plunger Stroke (mm)		-	-	-	-
Max. Pneumatic Pressure (MPa)		0.7	0.7	0.7	0.7
Max. Static Gripping Force (kN)		4.3	7.6	7.6	11.6
Max. Speed (min-1) (with Std. Alloy Jaws)		6000	6000	6000	4000
Moment of Inertia (kg·m2)		0.0015	0.005	0.005	0.024
Net Weight (kg) (with Soft Top Jaws)		1.8	2.1	2.1	6.3
Outline Drawing	PDF Instruction
	TIF Instruction
	DXF Instruction
	DWG Instruction

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