Face mill arbor JIS B 6339 (MAS-BT), Form AD, BT 40
Design: Made of alloy case-hardened steel, with a core tensile strength of min. approx. 950 N/mm² and a hardness depth of min. 0.5 mm. Enlarged contact surfaces and cooling channel holes on the end face. Taper to DIN 254.
Taper angle tolerance: AT3 Taper surface roughness: Ra < 0.001 mm Bore tolerance: H5 Hardened: 58 ± 2 HRC
Application: To mount tools with cross groove to DIN 1880.