7Leaders

Cutting Conditions

R303

R301 / R302

R328 / R329

R320

R308 / R318 / R319

R308 R318 R319 R320 R328 R329 R301 R302 R303

Dc

Dc

Dc

Dc

Dc

cutting speed Vc (m/min)

feed per tooth Fn (mm/rev)

cutting speed Vc (m/min)

feed per tooth Fn (mm/rev)

cutting speed Vc (m/min)

feed per tooth Fn (mm/rev)

cutting speed Vc (m/min)

feed per tooth Fn (mm/rev)

cutting speed Vc (m/min)

feed per tooth Fn (mm/rev)

Carbon Steel Materials

15

0.008×Dc

15

0.008×Dc

15

0.008×Dc

15

0.008×Dc

15

0.008×Dc

GR1 Carbon Steel

<24HRC Low-alloyed Steel <30HRC Hi-alloyed Steel 30~38HRC Hardened Steel 38~48HRC Hardened Steel 48~55HRC Hardened Steel 55~68HRC Hardened Steel

15

0.008×Dc

15

0.008×Dc

15

0.008×Dc

15

0.008×Dc

15

0.008×Dc

GR2

P

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

GR3

Hardened Steel Materials

8

0.005×Dc

8

0.005×Dc

8

0.005×Dc

8

0.005×Dc

8

0.005×Dc

GR4

5

0.003×Dc

5

0.003×Dc

5

0.003×Dc

5

0.003×Dc

5

0.003×Dc

GR5

H

GR6

GR7

Stainless Steel Materials

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

GR8-1 Ferritic 、 Martensitic

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

GR8-2 Austenitic

M

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

12

0.006×Dc

GR8-3 Austenitic-ferritic

Austenitic-ferritic Heat-resistant

8

0.004×Dc

8

0.004×Dc

8

0.004×Dc

8

0.004×Dc

8

0.004×Dc

GR8-4

Cast Iron Materials

15

0.006×Dc

15

0.006×Dc

15

0.009×Dc

15

0.006×Dc

15

0.009×Dc

GR9-1 Grey cast iron

K

15

0.006×Dc

15

0.006×Dc

15

0.009×Dc

15

0.006×Dc

15

0.009×Dc

GR9-2 Nodular cast iron

Aluminium Steel Materials

Wrought Aluminium alloys Aluminium cast alloys <10% Aluminium cast alloys >10%

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

GR10-1

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

GR10-2

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

20

0.006×Dc

GR10-3

N

Copper Steel Materials

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

GR11-1 Pure Copper

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

GR11-2 Brass

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

15

0.006×Dc

GR11-2 Bronze

※ All cutting data serve for orientation only and should be adapted individually to the technical conditions on location . 1. Please work with good rigidity / high precision facilities and collet chuck. 2. Please choose proper cutting fluid. 3. The cutting data is reference value only. Please adjust it according to your real working conditions. 4. If RPM is lower than the reference value, the Feed rate (fz) and RPM should be reduced by the same proportion. 5. If vibration occurs during cutting, please reduce cutting parameter.

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