Turning PCBN Inserts
PCBN Insert Denomination System
-
S 2
010 3
20 4
-
SL 5
-
2 6
-
CB 7
PB30 8
CNGA 120408 1
4- T-land Angle
3- T-land Width
2- Cutting Edge Shape
1- Standard ISO Code System
005--0.05mm 010--0.10mm 015--0.15mm 020--0.20mm
10--10° 15--15° 20--20° 25--25°
S-- Land + Honed
T-- Land
5- CBN Insert Structure
6- Number Of Cutting Edges
7- Cutting Edge Preparation
CB-- With chip breaker WG-- With wiper edge “None”-- Without chip breaker
2-- Two cutting edges 3-- Three cutting edges
FT-- Full-face composite
SD-- Solid CBN
8- Grade
SL-- Standard
PB30-- Low content CBN PB60-- Medium content CBN PB90-- High content CBN
QL-- Heavy-duty through-cut
PCBN Insert Grade Introduction
Grade
Grade Characteristics
Main Applications
ISO Group
Excellent wear resistance for medium-to-high-speed machining Balanced toughness for medium cutting speeds
Versatile; suitable for continuous and light interrupted cutting of hardened steel Moderate-interrupted cutting of hardened steel, interrupted and continuous machining of powder metallurgy, gray cast iron machining K- Mainly for cast iron machining H- Severe interrupted cutting of hardened steel, powder metallurgy machining
PB30
H05-H15
PB60
H10-H25
High CBN content with superior hardness & fracture resistance
PB90
K01-K20
Recommended Parameters for PCBN Insert
Hardness Range HRC58-62
Cutting Speed Vc (m/min)
Feed fn (mm/rev)
Depth of Cut ap (mm)
Recommended Application Conditions
Grade Workpiece Material
PB30
Hardened steel
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 metallurgy
-
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 metallurgy
-
300--800
0.03--0.3
0.10-0.3 Continuous/Interrupted
99
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