7Leaders

Cutting Conditions

T740TX

Dc

cutting speed Vc (m/min)

feed per tooth fz(mm)

Carbon Steel Materials

60

0.016xDc

GR1 Carbon Steel

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

60

0.016xDc

GR2

P

60

0.016xDc

GR3

Hardened Steel Materials

30

0.01xDc

GR4

H

20

0.01xDc

GR5

Stainless Steel Materials

30

0.01xDc

GR8-1 Ferritic 、 Martensitic

30

0.01xDc

GR8-2 Austenitic

M

20

0.01xDc

GR8-3 Austenitic-ferritic

Austenitic-ferritic Heat-resistant

15

0.01xDc

GR8-4

Cast Lron Materials

60

0.016xDc

GR9-1 Grey cast iron

K

60

0.016xDc

GR9-2 Nodular cast iron

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 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.

M04

M04

M04

M04

M04

Return to start point

Move to helical Starting position

Drll & thread with helical interpolation

When desired thread is complete, move to center, then exit hole

Chamfer*

246

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