BT Arbor for Modular End Mill ■ BT Arbor (for exchangeable head / double-face clamping spindle) L Gage Line Applicable Arbor (Gage face) Applicable End Mill φD1 φd1 Coolant Hole G (Center Through System) M1 Attachment image ℓ1 ℓ2 S ● Dimensions Arbor Dimension (mm) (Double-face Description Std. Coolant clamping) Hole L φD1 φd1 S ℓ1 ℓ2 M1 G BT30K- M08-45 ● 14.7 8.5 20 11 M8×P1.25 (MEW/MEC/MFH/MRX)..-M08-.. M10-45 ● 45 18.7 10.5 21 9 12 M10×P1.5 Yes BT30 (MEW/MEC/MFH/MRX)..-M10-.. M12-45 ● 23 12.5 24 15 M12×P1.75 (MEW/MEC/MFH/MRX)..-M12-.. BT40K- M08-55 ● 55 14.7 8.5 20 11 M8×P1.25 (MEW/MEC/MFH/MRX)..-M08-.. M10-60 ● 60 18.7 10.5 21 12 M10×P1.5 (MEW/MEC/MFH/MRX)..-M10-.. M12-55 9 Yes BT40 ● 55 23 12.5 24 15 M12×P1.75 (MEW/MEC/MFH/MRX)..-M12-.. M16-65 ● 65 30 17 25 16 M16×P2.0 (MEW/MEC/MFH/MRX)..-M16-.. ● Actual End Mill depth M Applicable End Mill (Head) Actual End Mill depth(mm) Arbor Description Cutting Dia.(mm) Dimension (mm) Description M L2 φD L1 Milling ...16-M08-... φ16 31.8 6.8 BT30K- M08-45 ...17-M08-... φ17 25 33.2 8.2 ...18-M08-... φ18 34.2 9.2 Inserts M10-45 ...20-M10-... φ20 36.8 6.8 30 ...22-M10-... φ22 39.2 9.2 Lead Angle 45°/20° φD ...25-M12-... φ25 42.8 7.8 Lead Angle M12-45 35 15° ...28-M12-... φ28 45.5 10.5 Lead Angle ...16-M08-... φ16 31.7 6.7 0° L1 L2 BT40K- M08-55 ...17-M08-... φ17 25 33.2 8.2 High Feed M ...18-M08-... φ18 34.3 9.3 Multi- ...20-M10-... φ20 38.7 8.7 Function M10-60 30 ...22-M10-... φ22 44.5 14.5 Slot Mill M12-55 ...25-M12-... φ25 44.6 9.6 Ball-nose 35 Radius ...28-M12-... φ28 47.6 12.6 Others ...32-M16-... φ32 51.2 11.2 M16-65 ...35-M16-... φ35 40 60.2 20.2 ...40-M16-... φ40 64 24 ● : Std. Item M58