SUMIBORON CBN Insert
Indexable Insert
S Square SPG32 Uncoated Dimensions (inch) Thickness .1250
: 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
Recommended Application
Q
Inscribed Circle .3750 Hole Dia.
L
E45
Applicable Internal Holders
Uncoated CBN
One-Use / 11° Positive (Without 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.
NUSPG321 NUSPG322
NU-SPGN090304 NU-SPGN090308
.0156 .0984 .0313 .0984
1 1
Standard
T-NUSPG321 T-NUSPG322
T-NU-SPGN090304 T-NU-SPGN090308
.0156 .0984 .0313 .0984
10 1
NUSPG321LT NUSPG322LT
NU-SPGN090304LT NU-SPGN090308LT
.0156 .0984
1 1
.0313 .0984
T01215
C
Sharper Edge
NUSPG321HS NUSPG322HS
NU-SPGN090304HS NU-SPGN090308HS
.0156 .0984
S01235
1 1
.0313 .0984
Strong Edge
D
*Use NS (NS-SPGN) for BNX25. *Depth of cut for single-use types is 0.0197 inch or less.
11° Positive (Without Hole)
Effective Cutting Edge Length LE
Nose Radius RE
No. of Cutting Edges
R
Pcs/ Pack
Cutting Edge Specification
Shape
Sumitomo Cat. No.
ISO Cat. No.
SPG321 SPG322
SPGN090304 SPGN090308
.0156 .1890 .0313 .1890
Standard
1 1
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
200
BNC500
BN7000
1,000
300
BN7500
BN7500
NCB100
BNS800
BN7000
100
100
100
( m/min ) v c
200
500
BN7000
BN500
( m/min ) v c
BN7000
( m/min ) v c
( m/min ) v c
( m/min ) v c
0
0.05 0.10 0.15 0.20 Feed Rate f (mm/rev)
0 0.1 0.3 0.5
0 1.0 2.0 3.0 4.0
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
0.15 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
Depth of Cut a p (mm)
Depth of Cut a p (mm)
L67
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