Heavy-duty Chuck, BT 40, Clamping Diameter: 20mm

Low friction due to needle bearings. Protected with anti-corrosion coating. Dust-tight and watertight. Very high clamping force prolongs tool life and improves surface quality. Flexible clamping range by means of collets. Clamping force up to 1000 Nm. Callout: Internal axial recesses effectively prevent the tool slipping. High radial stiffness due to repeatable clamping accuracy against a flat face, which prevents misalignment and ensures a high accuracy of machining, coupled with long tool life. T-slots take up the oil and grease, so that reliable torque transmission is achieved. Absolutely smooth running of the clamping nut. Application: For clamping tools with plain shanks. Supplied with: Clamping nut Optional extras: C wrench No. 628400. Pull studs No. 308760 308795. Collets No. 309566 309570. Machining strategy: HPC Overhang dimension A: 90 mm Collet outer Dia D: 52 mm Suitable C-hook pin wrench No. 628400: 52 / 55