Coated Solid CBN for Cast Iron and Hardened Steel Machining BNC8115 / BNS8125
Cast Iron Hardened Steel
¢ Features Covers a wide range of machining applications from roughing to finishing of cast iron, hard-to-cut cast iron and hardened steel. 100% solid CBN structure enables depth-of-cut of .20" and above.
¢ Lineup D BNC8115
L
PVD coating with excellent wear resistance suppresses flank wear when machining difficult-to-cut cast iron and hardened steel. Ideal for roughing and depth-of-cut of .020" - .118". Can also be used for roughing and finishing of gray cast iron. Gold coating improves visibility of used corners. D BNS8125 Optimizing the particle size distribution of the CBN particles has resulted in improved fracture resistance and longer life while maintaining wear resistance during gray cast iron machining.
Cutting Performance (BNC8115)
Application Range
D Wear Resistance (Ductile Cast Iron Machining)
D Wear Resistance (Hardened Steel Machining)
D Gray Cast Iron
D Ductile Cast Iron
0.20
Conventional CBN
0.4
Conventional CBN
K
K
Finishing region 0.16
Roughing region
1650
0.3
8200
BN7125 BN7000 0.12
Conventional Tool (Uncoated) (After Cutting 2.5km)
Conventional Tool (Uncoated) (After Cutting 0.5km)
BNC500
D
6560
0.2
1320
D D
0.08
D
D
BNC8115
BNC8115
D
4920
D
D
0.1
0.04
D D
BNC8115 BNS8125
D D
990
3280
D
D
BNC8115 0.5 1.0 1.5 2.0 2.5 Cutting Distance (km)
0.5
1.0 1.5 2.0 2.5
0
0
BNC8115 (After Cutting 2.5km)
BNC8115 (After Cutting 0.5km)
660
Cutting Distance (km)
BN7125 BN7000
1640
BN500
Work Material
: FCD450
Work Material
: SUJ2 (58 to 62HRC)
0
0
.16 : SNGN090308 Cutting Conditions : vc = 300m/min, f = 0.2mm/rev, ap = 0.2mm Wet .04 Tool Cat. No. .08 .12 Depth of Cut ap (Inch)
.08 : SNGN090308 Cutting Conditions : vc = 150m/min, f = 0.2mm/rev, ap = 0.3mm Wet .06 .10 .04 .02 .12 Depth of Cut ap (Inch) Tool Cat. No.
Wet machining is recommended for gray cast iron For dry machining, BNC8115/BNS8125 are recommended for both roughing and nishing Cutting Performance (BNS8125)
Recommended Cutting Conditions
D Wear Resistance (Gray Cast Iron Machining)
D Fracture Resistance (Ductile Cast Iron Machining)
D Hardened Steel
K
D Cast Iron (Turning)
0.16
Competitor's CBN
Recommended Cutting Conditions Cutting Speed vc (SFM) Feed Rate f (IPR)
Depth of Cut ap (Inch) Min. - Optimum - Max.
990
Work Material
Grade
0.12
D
BNC2105 BNC2115 BNC2125 BNC2010 BNC2020 BNC300
D
D D
825
Competitor's Product (Uncoated) (After Cutting 45km)
D
BNS8125
0.08
D
D
3300 3300
.020 .020 .012 .012
BNC8115 BNS8125 BNC8115 BNS8125
6560 6560
≤ .157 ≤ .157 ≤ .118 ≤ .118
660 660 260 260
- - - -
- - - -
.004 .004 .004 .004
- - - -
- - - -
.040 .040 .020 .020
D
Gray Cast Iron
660
0.04
520 390
990 660
495
Ductile Cast Iron
D
BNC8115 20
BNS8125 (After Cutting 9.0km) Improved cutting edge line chipping
330
0
10
30
40
50
BNS8125 (After Cutting 45km)
H
Conventional Tool (Uncoated) (After Cutting 9.0km)
D Hardened Steel (Turning)
Cutting Distance (km)
165
Recommended Cutting Conditions Cutting Speed vc (SFM) Feed Rate f (IPR) : FCD450 with 2 V-grooves
Work Material
: FC300
Work Material Tool Cat. No.
Depth of Cut ap (Inch) Min. - Optimum - Max.
0
Work Material
Grade
.12 : SNGN090308 Cutting Conditions : vc = 800m/min, f = 0.1mm/rev, ap = 0.2mm Wet .04 .06 .10 .08 .02 Tool Cat. No. Depth of Cut ap (Inch)
: SNGN120408 Cutting Conditions : vc = 200m/min, f = 0.2mm/rev, ap = 0.5mm Wet
BNC8115
-495 330
-.016 .010
Hardened Steel
≤ .118
165 -
.004-
D Cast Iron (Milling) Choosing Between BNC8115 and BNS8125 (Cast Iron/Hardened Steel)
BNC8115 BNS8125 Coated SUMIBORON SUMIBORON
SUMIBORON BN7000
Recommended Cutting Conditions Cutting Speed vc (SFM) Feed Rate f (IPR) BNC2125 Coated SUMIBORON BNC500 Coated SUMIBORON Turning Turning
Depth of Cut ap (Inch) Min. - Optimum - Max.
Work Material
Work Material
Grade
Turning
Milling
Turning
Milling
Turning
Milling
Depth of Cut 1.0mm or below High-speed Finishing Depth of Cut 0.5mm or below Low-speed Machining
4590 4590 Q
BNC8115 BNS8125 Q
.020 .020
2620 2620
- -
- -
6560 6560
≤ .157 ≤ .157
.004 .004 Q
- -
- -
.040 .040 Q
Best Economical
Gray Cast Iron
Gray Cast Iron
Best
Depth of Cut 0.5mm or above
Interrupted Machining
Depth of Cut 0.5mm or below
Ductile Cast Iron
Q
Q
Depth of Cut 0.5mm or below High-speed Machining
Depth of Cut 0.5mm or above
Hardened Steel
Q
Q
Q
Q
Q
Q
L20
: Recommendation
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