Turning
PCBN Insert Denomination System
-
S 2
010 3
20 4
-
SL 5
-
1 6
-
CB 7
PB30 8
CNGA 120408 1
1-Standard ISO Denomination System
2-Cutting Edge Shape
3-T-land Width
4-T-land Angle
10----10° 15----15° 20----20° 25----25°
005----0.05mm 010----0.10mm 015----0.15mm 020----0.20mm
E--Honed
T--Land without honing
S----Land with honed
F----Sharp
5-CBN Insert Structure
6-Number of Cutting Edge
7-Cutting Edge Preparation
8-Grade
1----One cutting edge 2----Two cutting edges 3----Three cutting edges
PB30--- Low content CBN PB60---Medium content CBN PB90---High content CBN
CB----With chip breaker WG---With wiper edge “-” ----Without chip breaker
FT-- Full face CBN
SD-- Solid CBN
SL-- Small size tipped CBN
NL-- Standard-tipped CBN (Regrindable)
PCBN Insert Grade Introduction
Grade
Feature
Application
Well balanced wear resistance and shock- resistance
Good versatilely. Suitable for continuous and light interrupted cutting of hardened steel Mainly applied in medium interrupted cutting of hardened steel, interrupted and continuous cutting of powder metal and cast iron cutting. K-mainly applied in cast iron cutting H-heavy interrupted cutting of hardened steel and powder metal machining
PB30
PB60
Excellent toughness
Good wear resistance, toughness, and shock-resistance
PB90
PCBN Recommended Cutting Parameter
Cutting speed Vc(m/min)
Feed fn(mm/rev)
Cutting depth ap(mm)
Recommended application
Grade
Material
Hardness
PB30
Hardened steel
HRC58-62
150--250
0.03--0.2
0.05-0.3
Continuous
Hardened steel
HRC55-60
50--150
0.03--0.2
0.05-0.5
Interrupted
PB60
Cast iron
HB180-220
150--450
0.03--0.3
0.30-0.5
Continuous / Interrupted
Powder metal
-
200--500
0.03--0.3
0.10-0.3
Continuous / Interrupted
Hardened steel
HRC55-60
30--120
0.03--0.2
0.05-0.5
Heavy interrupted
PB90
Cast iron
HB180-220
150--450
0.03--0.3
0.30-0.5
Continuous / Interrupted
Powder metal
-
300--800
0.03--0.3
0.10-0.3
Continuous / Interrupted
92
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