Sh. chuck JISB6339ADB R/L 0,3- 8 BT40

CNC precision chuck for clockwise and anti-clockwise rotation, JIS B 6339 (MAS-BT), Form A, BT 40

Design: Made of alloy case-hardened steel, with a core tensile strength of approx. 950 N/mm² and a hardness depth of min. 0.5 mm. Taper to DIN 254. Hardened 58 ±2 HRC. Short design with central coolant supply, chuck and shank in one piece. Clamping (using a hex spanner) essentially increases clamping force in comparison to conventional chucks. At the same time, this secures the chuck against becoming loose during anti-clockwise rotation or being quickly decelerated from higher speeds.

Taper angle tolerance: AT3
Taper surface roughness: Ra < 0.001 mm
Concentricity: 0.02 mm
Balancing quality: G6.3 25000 min-1

Application: To mount tools with a cylindrical shank with internal cooling.

Scope of delivery: CNC short drill chuck with sealing disc for coolant drill bits with 3-6 mm Ø