A Pneumatic Rotary Jaw Type Chuck is an air-operated, rotating workholding chuck used on CNC lathes and turning centers for fast, accurate, and repeatable clamping. Actuated via compressed air through a rotary union, it supports 2-jaw, 3-jaw, or 4-jaw configurations and is ideal for high-speed, automated production where short cycle times are critical.
A Pneumatic Rotary Jaw Type Chuck is an air-operated, rotating chuck used on CNC lathes and turning centers for fast, repeatable, and accurate clamping.
It uses 2-jaw, 3-jaw, or 4-jaw mechanisms and is ideal for high-speed production, where short cycle time and automation compatibility are critical.
The chuck rotates with the spindle and is actuated through compressed air via a rotary air union.
Key Advantages
⚡ Very fast clamping & unclamping
🔄 Rotary design for high-RPM machining
🎯 Good concentricity & repeatability
🤖 Automation-ready (robot / gantry / bar feeder)
🛠️ Low maintenance & simple construction
🔧 Available in 2-jaw / 3-jaw / 4-jaw options
Working Principle
Compressed air enters through a rotary air union
Internal pneumatic piston moves
Piston drives the jaw mechanism
Jaws clamp the component firmly
Air release opens jaws instantly
✅ Ensures quick, repeatable clamping for mass production.
Technical Specifications
|
Parameter |
Specification |
|
Operation |
Pneumatic (Rotary) |
|
Air Pressure |
4 – 7 bar |
|
Jaw Type |
2-Jaw / 3-Jaw / 4-Jaw |
|
Jaw Motion |
Wedge / Scroll / Direct piston |
|
Repeat Accuracy |
≤ 0.02 mm |
|
Rotation |
With spindle |
|
Max RPM |
As per chuck size |
|
Mounting |
A2 / A-Type / Custom flange |
|
Body Material |
Hardened Alloy Steel |
|
Sealing |
Industrial pneumatic seals |
Specifications customizable as per CNC machine.
Construction Details
Chuck Body: Hardened & precision-ground steel
Jaws: Hardened master jaws with soft jaw option
Piston: Precision machined for smooth actuation
Air Seals: Long-life, high-speed pneumatic seals
Finish: Ground mating surfaces for accuracy
Types Available
Pneumatic 3-Jaw Self-Centering Chuck
Pneumatic 2-Jaw Parallel Chuck
Pneumatic 4-Jaw Independent Chuck
Chuck with soft jaws / special jaws
Custom jaw stroke & clamping force
Applications
CNC turning centers
Automatic & production lathes
Automotive & hydraulic components
Shafts, bushes, fittings & flanges
High-volume machining lines
Why Choose Our Pneumatic Rotary Jaw Chuck?
✔ Faster cycle time than manual chucks
✔ Consistent part quality
✔ Ideal for automation & mass production
✔ Robust design for Indian shop conditions
✔ Custom-engineered solutions available
Have questions about a specific product? Our team will help you find the right option for your needs — ensuring compatibility, quality, and value.
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