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Copy Mills • M170 ™ Series
Recommended Starting Speeds
„ 
Recommended Starting Speeds [m/min]
P
M
K
N
S
H
TN2505
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 – – – – – –
Material
Group
NOTE: FIRST choice starting speeds are in bold type.
As the average chip thickness increases, the speed should be decreased.
Recommended Starting Feeds
„ 
Recomm ended Starting Feeds [mm]
Light
Machining
General
Purpose
Heavy
Machining
At 3,50 Axial Depth of Cut (ap)
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
MH
5%
0,23
0,46
10%
0,74
0,17
0,33
20%
0,54
0,13
0,25
30%
0,40
0,11
0,22
Insert
Geometry
40–100%
0,35
0,10
0,20
0,32
MH
At 1,50 Axial Depth of Cut (ap)
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
MH
5%
0,28
0,56
10%
0,91
0,20
0,41
20%
0,65
0,15
0,31
30%
0,49
0,13
0,27
Insert
Geometry
40–100%
0,43
0,12
0,24
0,39
MH
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
MH
5%
0,37
0,75
10%
1,21
0,27
0,54
20%
0,87
0,20
0,40
30%
0,65
0,18
0,35
Insert
Geometry
40–100%
0,56
0,16
0,32
0,52
MH
At 0,50 Axial Depth of Cut (ap)
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert
Geometry
MH
5%
0,45
0,91
10%
1,47
0,32
0,65
20%
1,05
0,24
0,49
30%
0,78
0,21
0,42
Insert
Geometry
40–100%
0,68
0,19
0,39
0,62
MH
NOTE: Use “Light Machining” value as starting feed rate.
widia.com
M45
At 0,75 Axial Depth of Cut (ap)