
Model |
Chuck Size |
No. of Jaws |
Diameter |
Height |
|---|---|---|---|---|
| MMR-80-6 | 3 in81 mm | 6 | 3.19 in81 mm | .63 in16 mm |
| MMR-100-6 | 4 in102 mm | 6 | 4.02 in102.1 mm | .71 in18 mm |
| MMR-125-6 | 5 in127 mm | 6 | 5.00 in127 mm | .71 in18 mm |
| MMR-150-6 | 6 in152 mm | 6 | 5.98 in152 mm | .70 in17.7 mm |
| MMR-200-6 | 8 in204 mm | 6 | 8.03 in204 mm | .69 in17.5 mm |
| MMR-250-6 | 10 in254 mm | 6 | 10.00 in254 mm | .87 in22 mm |
| MMR-300-6 | 12 in294 mm | 6 | 11.57 in293.9 mm | 1.02 in25.9 mm |


Model |
Chuck Size |
Repeating Accuracy |
No. of Jaws |
Jaw Stroke |
Max. Jaw Force |
Max. Air Pressure |
Weight |
|---|---|---|---|---|---|---|---|
| MBS/N-80 | 3.19 in80 mm | .0001 in.0025 mm | 6 | .063 in1.5 mm | 510 lbf232 kgf | 100 psi7.1 kg/cm² | 3.3 lb1.5 kg |
| MBS/N-100 | 4.02 in102 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 1,560 lbf709 kgf | 100 psi7.1 kg/cm² | 6.5 lb3.0 kg |
| MBS/N-125 | 5.00 in127 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 3,640 lbf1,655 kgf | 100 psi7.1 kg/cm² | 10.4 lb4.7 kg |
| MBS/N-150 | 5.98 in152 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 6,090 lbf2,768 kgf | 100 psi7.1 kg/cm² | 14.3 lb6.5 kg |
| MBS/N-200 | 8.03 in204 mm | .0001 in.0025 mm | 6 | .126 in2 mm | 10,950 lbf4,977 kgf | 100 psi7.1 kg/cm² | 29.1 lb13.2 kg |
| MBS/N-250 | 10.00 in254 mm | .0001 in.0025 mm | 6 | .126 in2 mm | 17,090 lbf7,768 kgf | 100 psi7.1 kg/cm² | 34.5 lb29.3 kg |
| MBS/N-300 | 12.00 in294 mm | .0001 in.0025 mm | 6 | .126 in2 mm | 27,470 lbf12,486 kgf | 100 psi7.1 kg/cm² | 96.1 lb46.7 kg |
Design
Self-contained design with built-in air cylinder. Air is supplied to the chuck by a multi passage air tube assembly with a rotary coupling. Coolant through the spindle capability is standard.
Application
OD and ID chucking for cylindrical grinding, turning, and hard turning. Ideal for workpieces requiring high concentricity, and/or close round ness. Ideal for fragile parts which are easily distorted, and applications requiring high spindle speeds.
Design
Draw tube operated design. Can be actuated with either a hydraulic or pneumatic cylinder mounted at the rear of the machine spindle.
Application
OD and ID chucking for cylindrical grinding, turning, and hard turning. Ideal for workpieces requiring high concentricity, and applications requiring high chucking force and/or high spindle speeds.
Design
Self-contained design with built-in air cylinder. Air ports are located on the side of the chuck body for stationary use.
Application
OD and ID chucking for milling, drilling, inspection, or any other non- rotating application requiring high concentricity and/or close workpiece roundness. The inherent spring characteristic of the diaphragm allows workpieces to be clamped without continuous air supply for pallet and tombstone applications.




Air tube assemblies are used with MBS/L chuck models. The rotary air coupling features a hardened steel journal and a maintenance free oil- lite bearing.
Rotary air tubes include a blank support bushing, air hoses and fittings. Length to be specified when ordering. Contact our sales department for assistance in determining the correct length for your application.
Model |
Chucks used with |
Max. Speed |
|---|---|---|
| Model 50 | 80, 100, 125 & 150 models | 6,000 |
| Model 82 | 250 & 300 models | 4,000 |
Model |
Chuck Size |
Repeating Accuracy |
No. of Jaws |
Jaw Stroke |
Max. Jaw Force |
Max. Air Pressure |
Max. rpm |
Weight |
|---|---|---|---|---|---|---|---|---|
| MBS/L-80 | 3.19 in80 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 510 lbf232 kgf | 100 psi7.1 kg/cm² | 8,000 | 3.3 lb1.5 kg |
| MBS/L-100 | 4.02 in102 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 1,560 lbf709 kgf | 100 psi7.1 kg/cm² | 7,000 | 6.5 lb3.0 kg |
| MBS/L-125 | 5.00 in127 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 3,640 lbf1,655 kgf | 100 psi7.1 kg/cm² | 6,500 | 10.4 lb4.7 kg |
| MBS/L-150 | 5.98 in152 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 6,090 lbf2,768 kgf | 100 psi7.1 kg/cm² | 6,000 | 14.3 lb6.5 kg |
| MBS/L-200 | 8.03 in204 mm | .0001 in.0025 mm | 6 | .060 in1.5 mm | 10,950 lbf4,977 kgf | 100 psi7.1 kg/cm² | 4,500 | 29.1 lb13.2 kg |
| MBS/L-250 | 10.00 in254 mm | .0001 in.0025 mm | 6 | .080 in2 mm | 17,090 lbf7,768 kgf | 100 psi7.1 kg/cm² | 3,500 | 64.5 lb29.3 kg |
| MBS/L-300 | 11.57 in294 mm | .0001 in.0025 mm | 6 | .080 in2 mm | 27,470 lbf12,486 kgf | 100 psi7.1 kg/cm² | 3,000 | 96.1 lb43.7 kg |