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First Choice — Cast Iron
Negative Inserts – Cast Iron Metric
Introduction
ap (mm)
0,5 - 9,0
ap (mm)
0,5 - 4,0
ap (mm)
0,5 - 4,0
fn (mm/rev)
0,2 - 0,6
D.O.C. ap (mm)
fn (mm/rev)
0,1 - 0,55
fn (mm/rev)
0,1 - 0,55
NL250 NL250
Vc (m/min) PLATE Vc (m/min)
40 - 150 4U 60 - 225
NL200 NL200 Flat Flat
Vc (m/min)
40 - 165 4U Vc60(m/min)
- 245
NL200
Vc (m/min)
NL200 NL200 95 - 410
Vc (m/min) Vc (m/min) NL200 4U
40 - 165 4U 60 - 245 Vc (m/min)
95 - 410
NL200 ROUGHING
Vc (m/min)
95 - 410
MEDIUM
FINISHING
0,0
Feed fn (mm/rev)
Positive Inserts – Cast Iron Metric
ap (mm)
0,4 - 5,0
ap (mm)
0,25 - 3,0
fn (mm/rev)
D.O.C. ap (mm)
0,07 - 0,5
fn (mm/rev)
0,025 - 0,25
NL920 NL300
Vc (m/min)
25 - 80
73 Vc55(m/min)
- 200
SP4019 NL300
Vc (m/min) Vc (m/min)
90 - 335
62 70 - 265
SP4019
Vc (m/min)
120 - 440
MEDIUM-
ROUGHING
FINISHING
0,0 Feed fn (mm/rev)
Please note the above recommended cutting speeds, geometries and grades are for guidance only.
For more detailed information, see pages C12 - C23 (geometry technical information & grade technical information).
Interrupted Varying depth Good
Key cut of cut condition
C8 www.kennametal.com