Technical data: Product information Technical data for common shaft designs of milling machines and processing centres Tool shanks DIN 2080 SK sz. 30 40*) 50 SK sz. 30 40*) 50 a±0.2 1.6 1.6 3.2 I1 68.4 93.4 126.8 bH12 16.1 16.1 25.7 I2 48.4 65.4 101.8 d1 31.75 44.45 69.85 I3 3 5 8 d Nom. 2 dim. 17.4 25.3 39.6 I4 24 32 47 d4 M 12 M 16 M 24 I5 min. 33.5 42.5 61.5 d7 50 63 97.5 I6 5.5 8.2 11.5 k±0,15 8 10 12 I7 16.2 22.5 35.3 *) with ring groove NC tool shanks DIN 69871 Part 1 form A SK sz. 30 40 45 50 SK sz. 30 40 45 50 a±0.2 3.2 3.2 3.2 3.2 f1±0,1 11.1 11.1 11.1 11.1 b h 12 16.1 16.1 19.3 25.7 f2 min. 35 35 35 35 d1 31.75 44.45 57.15 69.85 I1–0,1 47.8 68.4 82.7 101.75 d2 M 12 M 16 M 20 M 24 I3 min. 24 32 40 47 d5 +0,05 59.3 72.3 91.35 107.25 I5–0,1 15 18.5 24.0 30.0 d6–0,1 50 63.55 82.55 97.50 I6-0,4 16.4 22.8 29.1 35.5 d7-0,5 44.3 56.25 75.25 91.25 I8-0,4 19 25 31.3 37.7 d8 max. 45 50 63 60 NC tool shanks DIN 69871 Part 1 form B Cut A-B SK sz. d12 e1 ±0,1 SK sz. d12 e1 ±0,1 30 4 21 30 4 21 40 4 27 40 4 27 50 5 42 50 5 42 JiS B 6339 tool shanks (former MAS-BT) SK sz. 40 45 50 SK sz. 40 45 50 a±0.4 2 3 3 d1 h 12 53 73 85 d1 44.45 57.15 69.85 f1 ±0.1 16.6 21.2 21.2 d2 M 16 M 20 M 24 f2 25 30 35 d5 h 8 75.68 100.22 119 l1 ±0.1 65.4 82.8 101.8 d6 h 8 63 85 100 I2 min. 30 40 45 ANSI NC tool shanks SK sz. 40 45 50 SK sz. 40 45 50 b +0,2 16.1 19.3 27.5 d6 –0,1 63.55 82.55 98.45 d1 44.45 57.15 69.85 d7 -0,5 56.25 75.25 91.25 d2 M 16 M 20 M 24 d8 -0,5 44.7 57.4 70.1 d3 h 7 17 21 25 l6 –0,4 22.8 29.1 35.5 d5 –0,1 72.35 91.4 107.3 I8 –0,4 26 32.5 40.4 www.precitool.de 24/407