SUMIBORON Grade Guidance
Hardened Steel
Applications
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
● Induction Hardened Steel (S45C/S55C, etc.), Carburized Steel Uncoated CBN - SUMIBORON
Coated CBN - SUMIBORON ● Induction Hardened Steel (S45C/S55C, etc.), Carburized Steel
1000
1000
BNC100
BN1000
BNC160
BNC2010
650
650
BNC200
BNC2020
BN2000
BNX25
BNX20
400 330
BN350
330
BNC300
Light Interrupted Medium Interrupted Heavy Interrupted Continuous
Light Interrupted Medium Interrupted Heavy Interrupted Continuous
Small
Impact Force on Cutting Edge Large
Small
Impact Force on Cutting Edge Large
Uncoated CBN - SUMIBORON ● Die Steel (D2 Tool Steel, etc.), High Speed Steel
Recommended Cutting Conditions
Cutting Speed v c (SFM)
Feed Rate f (IPR)
Depth of Cut a p (Inch)
Grade
500
165
330(400)
500
(560)
650
(725)
825 1000
BNC2010
.0012 - .0138
.0012 - .0098
BN1000
BNC2020
.0012 - .0197
.0012 - .0157
330
BNC300
.0012 - .0118
.0012 - .0079
BN2000
BNC100
.0012 - .0118
.0012 - .0079
BN350
BNC160
.0012 - .0138
.0012 - .0079
165
BNC200
.0020 - .0197
.0020 - .0138
BN7000 HSS Machining
BN1000
.0012 - .0059
.0012 - .0079
BN2000
.0012 - .0079
.0012 - .0118
Continuous
Light Interrupted Heavy Interrupted
BN350
.0012 - .0118
.0012 - .0079
Small
Impact Force on Cutting Edge Large
BNX10
.0012 - .0079
.0012 - .0059
.0012 - .0197
.0012 - .0118
BNX20
.0012 - .0197
.0012 - .0118
BNX25
L5
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