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Copy Mills • M270 ™ Series
Recommended Starting Speeds
„ 
Recommended Starting Speeds [m/min]
Material
Group
P
M
K
S
H
TN6525
TN6540
1 550 420 360 410 320 280 360 280 240
2 320 240 205 320 250 215 250 190 170
3 320 240 205 280 215 185 215 170 140
4 – – – 235 170 145 180 130 110
5 – – – 310 235 200 240 180 150
6 – – – 205 160 130 160 120 100
1 – – – 190 120 80 130 80 60
2 – – – 120 80 50 80 50 40
3 – – – 125 80 55 85 50 40
1 400 300 250 275 245 220 220 205 180
2 540 365 280 215 190 180 175 155 140
3 310 190 155 180 160 145 155 145 125
1 – – – – – – – – –
2 – – – – – – – – –
3 – – – – – – – – –
1 – – – – – – 50 35 30
2 – – – – – – 25 20 10
3 – – – – – – 70 40 30
4 – – – – – – 60 30 25
1 175 140 95 – – – – – –
2 175 140 95 – – – – – –
3 140 115 80 – – – – – –
NOTE: FIRST choice starting speeds are in bold type.
As the average chip thickness increases, the speed should be decreased.
Recommended Starting Feeds
„ 
Recommended Starting Feeds [mm]
Light
Machining
General
Purpose
Heavy
Machining
At 0,60 Axial Depth of Cut (ap) • HF10
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
HF
5%
1,01
1,57
10%
–
0,67
0,97
20%
1,41
0,48
0,69
30%
0,97
0,42
0,59
Insert
Geometry
40–100%
0,83
0,38
0,54
0,75
HF
At 0,60 Axial Depth of Cut (ap) • HF12
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
HF
5%
0,91
1,53
10%
2,81
0,61
0,96
20%
1,43
0,45
0,69
30%
0,99
0,39
0,59
Insert
Geometry
40–100%
0,85
0,35
0,54
0,77
HF
At 0,60 Axial Depth of Cut (ap) • HF13
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
HF
5%
0,94
1,58
10%
2,82
0,64
1,00
20%
1,49
0,46
0,71
30%
1,03
0,40
0,61
Insert
Geometry
40–100%
0,88
0,37
0,56
0,80
HF
NOTE: Use “Light Machining” value as starting feed rate.
M128
widia.com
N
TN2505