Sealed air chucks feature a stainless steel cover that seals the jaw slides. This design prevents contamination from grit and swarf and minimizes chuck maintenance for high volume production operations. Sealed air chucks are available in rotating and stationary configurations and are ideal for cylindrical grinding operations as well as machining abrasive materials such as powdered metal, ceramic, or carbide.

QC precision located top jaw system is standard on sealed air chucks.

Chuck Accuracy
  • .00005" (0.0012mm) TIR is standard
  • .00002" (0.0005mm) TIR is available
Unit of Measure

Chuck Size

N/A 3 in80 mm
No. of Jaws1 N/A 3
Chuck Accuracy2 N/A .00005 in.0012 mm
Jaw Stroke3 N/A .050 in1.3 mm

Max. Clamp Force

N/A 1,520 lbs6.8 kN

Max. Air Pressure

N/A 100 psi0.7 MPa
Max. rpm4 N/A 6,000

Chuck Weight

N/A 4.2 lb1.9 kg

Item No.

N/A 06 030 302

UP Ultra Precision Option

N/A Repeating accuracy to .000020" (0.0005mm) TIR

For applications which require extremely close chucking accuracy, MicroCentric will selectively fit and certify a chuck to an accuracy of .000050" (0.001mm) or .000020" (0.0005mm) depending on model.

Note that temperature variations, changes in air pressure, spindle runout, and the condition and design of top jaws will affect chuck accuracy.
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BP Back Ported Option

N/A Air passages through the back cover provides a hole in the center of the chuck

For applications where the workpiece must be swallowed into the center of the chuck. The BP design also enables housings with part stops or parts ejectors to be mounted into the ID of the chuck.

Air is typically supplied to BP chucks through the mounting plate which can be supplied with the chuck.
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  • 1 2 jaw configurations available for all air chuck sizes
  • 2 Chuck accuracy is defined as the total indicator reading (maximum radial and lateral runout) of a master gage measured
  • 3 Total jaw stroke (on diameter)
  • 4 Max. rpm is influenced by air pressure and mass of top jaws