CBN Grade Guidance Applications
Hardened Steel
Coated CBN - SUMIBORON: 1st recommendation for hardened steel machining, excellent performance in high- speed, high-efficiency machining. Uncoated CBN - SUMIBORON: Optimal for machining small items with a limited cutting speed & hardened steel.
Series
Applications
1000
· First recommendation for hardened steel machining ·Machining requiring high speed and high accuracy · Machining requiring high efficiency, such as carburised layer removal
Coated CBN SUMIBORON
650
Coated CBN SUMIBORON
L
330
165 (265)
Uncoated CBN SUMIBORON
· Machining where cutting speed cannot be increased, such as small product machining · Machining of workpieces containing hard particles such as mold components · Machining with low tool rigidity
Uncoated CBN SUMIBORON
Frequency of Interruption
Continuous Induction Hardened Steel Carburised Materials
Light Interrupted
Medium Interrupted
Heavy Interrupted
Work Material
Bearing Steel
Die Steel
HSS
Machine Rigidity
High
Low
Application Range
Coated SUMIBORON D Induction Hardened Steel (1045 Steel, 1050 Steel, etc.), Carburized Steel D Induction Hardened Steel (1045 Steel, 1050 Steel, etc.), Carburized Steel Uncoated SUMIBORON
1150 990
990
BN1000
BNC2105
BNC2115 BNC2125 BNC2125
BNX20
660
660
BN2000
BN350
BNC300
330
BNC2010 BNC2020 BNC2020
330
Light Interrupted Heavy Interrupted
Continuous
Continuous
Light Interrupted Heavy Interrupted
Small
Impact Force on Cutting Edge Large
Small
Impact Force on Cutting Edge Large
D Bearing Steel (SUJ2, etc.)
Uncoated SUMIBORON D Die Steel (SKD11/SKD61, etc.), HSS
Coated SUMIBORON
990
495
BNC2105
825
BN1000
330
BN2000
660
BN350
BNC2125
495
165
BN7125
HSS Machining
/ BN7000
BNC8115
330
165
Continuous
Light Interrupted Heavy Interrupted
0 .004 .008 .012 .016 .020
.120
Depth of Cut ap (inch)
Small
Impact Force on Cutting Edge Large
L5
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