SUMIBORON CBN Insert
Indexable Insert
Triangular
T
: 1st Recommended : 2nd Recommended
: 1st Recommended : 2nd Recommended
: 1st Recommended : 2nd Recommended
(Legend) Continuous Cutting
General Cutting
Interrupted Cutting
K Cast Iron S Exotic Alloy H Hardened Steel Sintered Components
TNMA43 Uncoated
Recommended Application
Inscribed Circle .5000 Hole Dia.
.2031
Dimensions (inch)
Thickness
.1875
L
C20 to C26
E23 to E25
Applicable External Holders
Applicable Internal Holders
Uncoated CBN
Negative (With Hole)
Effective Cutting Edge Length LE
Nose Radius RE
No. of Cutting Edges
Pcs/ Pack
Cutting Edge Specification
Shape
Sumitomo Cat. No.
ISO Cat. No.
TNMA431 TNMA432 TNMA433
TNMA220404 TNMA220408 TNMA220412
Q Q Q Q Q Q
D
.0156 .1378
D
« D « D
Standard
1 1
.0313 .1260
.0469 .1142
Single-Use / Negative (With Hole)
Effective Cutting Edge Length LE
Nose Radius RE
No. of Cutting Edges
Pcs/ Pack
Cutting Edge Specification
Sumitomo Cat. No.
ISO Cat. No.
Shape
C
NUTNMA431 NU-TNMA220404 NUTNMA432 NU-TNMA220408 NUTNMA433 NU-TNMA220412
Q Q Q Q Q Q
D D D
.0156 .0906
.0313 .0787 D D D D
Standard
1 1
D D D
.0469 .0787
D
R
S
T
V
W
CBN Application Range Map
(C) Gray Cast Iron
(D) Ductile Cast Iron
(E) General Powdered Metal
(F) High-density Powdered Metal
(G) Titanium Alloy
2,000
500
300
300
300
1,500
400
200
200
BNC500
200
BN7000
1,000
300
BN7500
( m/min ) v c
( m/min ) v c
( m/min ) v c
( m/min ) v c
BN7500
( m/min ) v c
BNS800
BN7000
NCB100
100
100
100
BN7000
200
500
BN500
BN7000
0
0.05 0.10 0.15 0.20 Feed Rate f (mm/rev)
Depth of Cut a p ( mm ) Feed Rate f ( mm / rev )
Depth of Cut a p ( mm ) Feed Rate f ( mm / rev )
0 0.1 0.3 0.5
0 1.0 2.0 3.0 4.0
0 0.1
0.15 0.05 0.1 0.2 0.25 0.3 0.2 0.3 0.4 0.5
0 0.1
0.05 0.1 0.15 0.2 0.25 0.3 0.2 0.3 0.4 0.5
p (mm)
Depth of Cut a
Depth of Cut a
p (mm)
L73
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