FORTIS Drill chuck mounting JISB6339A BT50-B16

Drill chuck mounting, ISO 7388-2 (JIS B 6339 MAS/BT), A

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 according to DIN 254.

Taper angle tolerance: AT3
Taper surface roughness: Ra < 0.001 mm
Bore tolerance: H5
Hardened: 58 ± 2 HRC

Application: For mounting drill chucks with inside taper according to DIN 238.