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Insert Cutter Radius Compensation

Manufacturing Engineering and Design

Machining Insert cutters are removable cutting tips, which means they are not brazed or welded to the tool body. Insert cutters can be exchanged, and often also rotated or flipped, without disturbing the overall geometry of the tool (effective diameter, tool length offset, etc.). This saves time in manufacturing by allowing fresh cutting edges to be presented periodically without the need for tool grinding, setup changes, or entering of new values into a CNC program.

Insert Cutter Radius Compensation per. Specification ANSI B212.3
All dimensions are in inches.

Square Profile Insert Cutter
B Style
Also applies to R Style
B Style  Insert Cutter
Turning 15° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
.0035
.0191
.0009
.0110
1⁄32
.0070
.0383
.0019
.0221
3⁄64
.0105
.0574
.0028
.0331
1⁄16
.0140
.0765
.0038
.0442
D Style
Also applies to S Style
D Style  Insert Cutter
Turning 45° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
.0065
.0221
.0065
0
1⁄32
.0129
.0442
.0129
0
3⁄64
.0194
.0663
.0194
0
1⁄16
.0259
.0884
.0259
0
K Style
K Style  Insert Cutter
Facing 15° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
.0009
.0110
.0035
.0191
1⁄32
.0019
.0221
.0070
.0383
3⁄64
.0028
.0331
.0105
.0574
1⁄16
.0038
.0442
.0140
.0765
Triangle Insert Cutter Profile
G Style
G Style  Insert Cutter
Turning 0° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
.0114
.0271
0
.0156
1⁄32
.0229
.0541
0
.0312
3⁄64
.0343
.0812
0
.0469
1⁄16
.0458
.1082
0
.0625
B Style
Also applies to R Style
B Style   Insert Cutter
Turning and Facing 15° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
.0146
.0302
.0039
.0081
1⁄32
.0291
.0604
.0078
.0162
3⁄64
.0437
.0906
.0117
.0243
1⁄16
.0582
.1207
.0156
.0324
F Style
F Style Insert Cutter
Facing 90° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
0
.0156
.0114
.0271
1⁄32
0
.0312
.0229
.0541
3⁄64
0
.0469
.0343
.0812
1⁄16
0
.0625
.0458
.1082
J Style
J Style
Turning and Facing 3° Lead Angle
Rad.
L-1
L-2
D-1
D-2
1⁄64
.0106
.0262
.0014
.0170
1⁄32
.0212
.0524
.0028
.0340
3⁄64
.0318
.0786
.0042
.0511
1⁄16
.0423
.1048
.0056

.0681

L-1 and D-1 over sharp point to nose radius; and L-2 and D-2 over sharp point to center of nose radius. The D-1 dimension for the B, E, D, M, P, S, T, and V style tools are over the sharp point of insert to a sharp point at the intersection of a line on the lead angle on the cutting edge of the insert and the C dimension. The L-1 dimensions on K style tools are over the sharp point of insert to sharp point intersection of lead angle and F dimensions.

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