Cutting data
Boring
Ø 16-30 Ø 31-74
Cutting data for indexable insert drills serie 337 3xD and 4xD, Ø 16-30 mm
Cutting speed Vc (m/min) 1) Coolant
Feed fn (mm/U) Drill
from outside
trough the drill
Designation
No.
3xD / 4xD 160 - 200 140 - 160 140 - 160 120 - 160 100 - 140 100 - 140 100 - 140 130 - 170 130 - 170 120 - 160 200 - 300
3xD
4xD
Ø 16-20
Ø 21-30
St 37 St 60 CK 45
(1.0067) (1.0062) (1.1191) (1.7220) (1.2311) (1.2080) (1.4108)
240 - 280 220 - 280 220 - 280 180 - 220 160 - 200 160 - 200 160 - 200 220 - 260 220 - 260 180 - 220 250 - 500
200 - 240 180 - 220 180 - 220 160 - 200 140 - 180 140 - 180 140 - 180 170 - 210 170 - 210 160 - 210 250 - 500
0.08 0.08 0.08 0.08 0.06 0.05 0.05 0.10 0.10 0.08 0.06
0.10 0.10 0.10 0.10 0.08 0.07 0.07 0.12 0.12 0.10 0.08
34CrMo4
40CrMnMo7
X210Cr12
X100CrMo13 GG 20 - GG 40
GG 60
GGG 42
Aluminum 2)
1) The above cutting data are guide values and apply under normal working conditions when an ample supply of coolant is used. 2) Machining of aluminium: In case of unfavourable chipping, interrupt drilling cycle for chip removal. Max. drilling depth with flood coolant supply: 1xD
Cutting data for indexable insert drills serie 336 2xD and 3xD, Ø 31-74 mm
Cutting speed Vc (m/min) 1) Coolant
Feed fn (mm/U) Drill
Designation
No.
from outside
trough the drill
31.0 - 41.9
≥ 42 0.10 0.15 0.15 0.15 0.15 0.15 0.15 0.25 0.25 0.15 0.10
St 37 St 60 CK 45
(1.0067) (1.0062) (1.1191) (1.7220) (1.2311) (1.2080) (1.4108)
200 - 240 180 - 220 180 - 220 140 - 180 120 - 160 120 - 160 120 - 160 150 - 220 150 - 220 140 - 180 200 - 300
240 - 280 220 - 280 220 - 280 180 - 220 160 - 200 160 - 200 160 - 200 220 - 260 220 - 260 180 - 220 250 - 500
0.10 0.12 0.12 0.12 0.12 0.12 0.12 0.22 0.22 0.12 0.10
34CrMo4
40CrMnMo7
X210Cr12
X100CrMo13 GG 20 - GG 40
GG 60
GGG 42
Aluminum
1) The above cutting data are guide values and apply under normal working conditions when an ample supply of coolant is used. Max. drilling depth with flood coolant supply: 1xD
11
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