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TECHNICAL INFORMATION

Material Material
· Case -hardened and tempered alloy steel · Acero aleado de cementacion, cementado y templado
· Surface hardness 58-60 HRC · Dureza superficial 58-60 HRC
· Minimum stregth in core 900 N/mm 2 · Resistencia minima al nucleo 900 N/mm 2

· Taper tolerance · Tolerancia cono
· Grade AT3 · Grado AT3
20º
SK STANDARD DIN 69871 For tool shanks SK in accordance with ISO 7388-1

d2 d1 d3 d4 e1
Form AD Form AD+B
20º
7:24 e1
a
L1 L2
d2 d1 d3 d4 e1

7:24 e1
a
L1 L2
Dimensions in mm
a +/-0.1 d1 d2+/-0.1 d3 d4 max. e1 +/-0.1 L1 0/-0.3 L2 0/-0.1
AD+B
SK40 3,2 44,45 63,55 M-16 50 27 68,4 19,1
SK50 3,2 69,85 97,5 M-24 80 42 101,75 19,1

BT STANDARD JIS BT 6339 For tool shanks BT in accordance with ISO 7388-2

Form AD Form AD+B
20º

d2 d1d3 e1

7:24 20º e1
a
L1 L2
Dimensions in mm e1
d2 d1d3
a +/-0.4 d1 d2 h8 d3 e1 +/-0.1 L1 +/-0.2 L2 0/-0.1
7:24 e1
a AD+B
L1 L2
BT40 2 44,45 63 M-16 27 65,4 27
BT50 3 68,95 100 M-24 42 101,8 38
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