Machine Tool

Quick jaw-change chuck
QB300 series

Suitable for multi-product variable-volume production

QB300 seriesズーム

QB300 series

  • Easy set-up and quick change of top jaw

*CE correspondence

CE correspondence model is QB300N and its specifications are the same as QB300’s except for the jaw release handle.

Product Specifications

【Important】The max. draw bar pull force and the max. static gripping force in the following specifications are for external diameter gripping.
When used for internal diameter gripping, the draw bar pull force must be less than half of the max. draw bar pull force.

Model QB306 QB308 QB310 QB312
Through-hole (mm) 45 52 75 91
Gripping Range (mm) Max. 140 180 210 250
Min. 8 15 23 32
Jaw Stroke (Diameter) (mm) 5.5 7.4 8.8 10.6
Plunger Stroke (mm) 12 16 19 23
Max. Draw Bar Pull Force (kN) 22 34 43 55
Max. Static Gripping Force (kN) 57 84 111 144
Max. Speed (min-1) 5500 4500 4000 3000
Moment of Inertia (kg・m2) 0.058 0.173 0.318 0.745
Net Weight (kg) (with Soft Top Jaws) 12.6 23.2 35 56
Matching Cylinder S1246 S1552 S1875 S2091
Matching Soft Jaws Standard
Extra Tall
Extra Tall
Extra Tall
Extra Tall
Outline Drawing PDF

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