CBN Inserts CBN Insert Edge Specification CBN Insert Edge Treatment All CBN inserts are enhanced with the optimum cutting edge preparation for the various grades and geometries (shown on the right). This is to avoid cutting edge fracture caused by the heavy loads generated during the machining of high-hardness materials such as hardened steel. As the pioneer of CBN tools, CBN - SUMIBORON's vast selection of grades and edge treatment combinations makes Sumitomo the world leader for hardened steel machining. ■ CBN Insert Edge Specification Overview
Section A-A'
Close-up of cutting edge
Rake Face
Negative Land
A
Rake Face
Negative land width W
α Negative land angle
CBN
CBN Layer Cutting Edge
A'
Honing
Flank
Flank
Nose Radius
L
Strong Edged H / U
L
E
Standard
Low Cutting Force
/ High-efficiency type
Work Material
Neg.-Pos.
Series
Grade
Edge Specification Identification Code
Edge Specification Identification Code
Edge Specification Identification Code
α
α
α
W Honing Notation
W Honing Notation
W Honing
Q Q QQQQ Q QQQ
BNX10 BNX20 BNX25 BN1000 BN2000
Negative/Positive T01225 25° 0.12 No Negative/Positive S01225 25° 0.12 Yes Negative/Positive S01725 25° 0.17 Yes Negative/Positive S01225 25° 0.12 Yes Negative/Positive S01225 25° 0.12 Yes
Q Q Q Q Q
LT
T01215 *
15° 0.12 No
Q Q QQQQ Q QQQ Q Q QQQQ Q QQQ
Hardened Steel
LT
HS HT
T01215 15° 0.12 No
S01235 35° 0.12 Yes T01235 35° 0.12 No
Negative Positive
T01225 25° 0.12 No T01235 35° 0.12 No
Q Q Q Q Q
BN350
Q Q Q Q Q
Q Q QQQQ Q QQQ
BN500
Negative/Positive T01215 15° 0.12 No
Q Q Q Q Q Q Q Q
LF LE LF LF LF LE LS LF LE LS LF LS LS LS LE LT ES LS LS LS LS
0° 0° 0° 0° 0° 0°
0 No 0 Yes 0 No 0 No 0 No 0 Yes
HS
BN7125
Negative/Positive T01215 15° 0.12 No
S01225 25° 0.12 Yes
BN7000 BN700
HS HS HS US
Negative/Positive T01215 15° 0.12 No Negative/Positive T01215 15° 0.12 No
S01225 25° 0.12 Yes S01225 25° 0.12 Yes S00525 25° 0.05 Yes S01225 25° 0.12 Yes
Cast Iron Sintered Alloy Exotic Alloy
BN7115
Negative/Positive T01215 15° 0.12 No
Q Q Q Q Q
S00715 15° 0.07 Yes
0° 0°
0 No 0 Yes
BN7500
HS
Negative/Positive T01215 15° 0.12 No
S00525 25° 0.05 Yes
S00715 15° 0.07 Yes
Q Q Q
Q Q Q Q Q Q Q Q Q Q
BNS8125
Negative
T02020 20° 0.2 No
No
BNC2105 Negative/Positive S01225 25° 0.12 Yes BNC2115 Negative/Positive S01225 25° 0.12 Yes BNC2125 Negative/Positive S01225 25° 0.12 Yes BNC2010 Negative/Positive S01225 25° 0.12 Yes
S00515 15° 0.05 Yes S00515 15° 0.05 Yes S00515 15° 0.05 Yes
HS HS HS
S01730 30° 0.17 Yes S02735 35° 0.27 Yes S01730 30° 0.17 Yes
Q
0°
0 Yes
T00515 15° 0.05 No S00535 35° 0.05 Yes S01715 15° 0.17 Yes S01020 20° 0.10 Yes S01015 15° 0.10 Yes S00515 15° 0.05 Yes
Hardened Steel
BNC2020 Negative/Positive S01225 25° 0.12 Yes
HS
S02735 35° 0.27 Yes
Q Q Q Q Q
BNC100 BNC160 BNC200 BNC300 BNC500
Negative/Positive S01225 25° 0.12 Yes Negative/Positive S01225 25° 0.12 Yes Negative/Positive S01225 25° 0.12 Yes Negative/Positive S01225 25° 0.12 Yes Negative/Positive S01215 15° 0.12 Yes
HS HS HS HS
S01730 30° 0.17 Yes S01735 35° 0.17 Yes S01735 35° 0.17 Yes S01225 25° 0.12 Yes
Q Q Q Q Q
Cast Iron
Q Q QQQQ Q QQQ
Cast Iron/Hardened Steel BNC8115
Negative
S02020 20° 0.2 Yes
Cast Iron / Exotic Alloy Cemented Carbide / Hard Brittle Material
SUMIBORON BINDERLESS
Q Q QQQQ Q QQQ
NCB100
Negative/Positive T01215 15° 0.12 No
*BNX20 inserts with an inscribed circle of less than ø4.76 will have an identification code of T00715.
■ Insert Edge Specification with Wiper / Chipbreaker
■ Edge Specification Identification Code
Edge Treatment Notation
Uncoated SUMIBORON
Coated SUMIBORON
Cutting Edge
Standard Cutting Edge
No
F Sharp Edge
Low Cutting Force
α
Type Notation
W Honing
Specification Identification Code
L
High Efficiency
E Honing
E
+
Strong Edged
T Negative Land
H
◦ ◦◦◦◦ ◦◦ ◦ ◦◦◦◦ ◦◦
WG WH
S01215 15° 0.12 Yes S01215 15° 0.12 Yes S01215 15° 0.12 Yes S01715 15° 0.17 Yes S02020 20° 0.20 Yes T02020 20° 0.20 No
Strong Edged
S Negative Land + Honing
U
◦◦◦
Wiper
WG/WH/W Wiper N-FV/N-LV/ N-SV
◦
W
With Chipbreaker
◦
● Edge specification identification code
◦ ¨
S 0 1 2 2 5
Wiper Sharp Edge LFW
Q Q
0° 0°
0 No 0 Yes
◦ ◦◦◦◦ ◦◦ ◦ ◦◦◦◦ ◦◦
N-FV
Rake Face Negative land width W
Negative land width Negative land angle
With Chipbreaker
N-LV S00535 35° 0.05 Yes N-SV S01235 35° 0.12 Yes
α Negative land angle
CBN
Cutting Edge Shape T S
: Negative land : Negative land + honing
◦◦◦◦ ◦◦ ◦◦◦ mark: Standard stocked item ¨ mark: Made-to-order item
Honing
Flank
Ex.: S01225 → 25°/0.12mm Negative Land with Honing
L28
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