SUMIBORON CBN Grade Guidance
Hardened Steel
Application Examples (Continuous Cutting)
1000
BNC2010 BNC2020 BN2000 Ceramics
650
500
330
L
165
10
100
200 300
1
Tool Life (min)
Tool Life Criterion: V B max = .0039”
Part Material: Alloy Structural Steel Round Bar (58 to 62HRC) Tool Cat. No.: DNGA432 Cutting Conditions: f = .0039 IPR, a p = .0079" Wet
Application Examples (Interrupted Cutting)
[Light Int. - Face with 4 Chamfered Holes (Interrupted Cutting 25%)]
[Medium Int. - Face with 8 Chamfered Holes (Interrupted Cutting 50%)]
Tool Life Ratio
Tool Life Ratio
Tool
Tool Grade
Tool
Tool Grade
50
100
50
100
D
D
BN2000 BNC300 BN350 BNX25
BN2000 BNC300 BN350 BNX25
D
D
D
D
D
D
Part Material: Chromium Steel (58 to 62 HRC) Tool Cat. No.: CNMA432 Cutting Conditions: v c = 330 SFM,
Part Material: Chromium Steel (58 to 62 HRC) Tool Cat. No.: CNMA432 Cutting Conditions: v c = 330 SFM,
f = .0039 IPR, a
p = .0079" Dry
f = .0039 IPR, a
p = .0079" Dry
[Heavy Int. - U Groove Face (Interrupted Cutting 100%)]
[High Speed Int. - Face with 8 Chamfered Holes (Interrupted Cutting 50%)]
Tool Life Ratio
Tool Life Ratio
Tool
Tool
Tool Grade
Tool Grade
50
100
50
100
D
D
BN2000 BNC300 BN350 BNX25
BN2000 BNC300 BN350 BNX25
D
D
ø100
D
D
D
D
Part Material: Chromium Steel (58 to 62 HRC) Tool Cat. No.: CNMA432 Cutting Conditions: v c = 330 SFM,
Part Material: Chromium Steel (58 to 62 HRC) Tool Cat. No.: CNMA432 Cutting Conditions: v c = 650 SFM,
f = .0039 IPR, a
p = .0079" Dry
f = .0039 IPR, a
p = .0079" Dry
L6
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