WNMN08/WNGN/WNGA Indexable CBN Inserts Rough Machining Truck Brake Drum
1. Halnn CBN Grade for machining Truck Brake Drum BN-S30 and BNK30
Insert Grade
|
Suited Materials |
Machining Type |
Typical Application |
BN-S30 |
Gray Cast Iron,Grey Cast Iron |
Roughing,Semi-Finishing |
Brake Drum,Cast Iron Engine,Gearbox, Cylinder Liner |
BNK30 |
Roughing,Finishing
|
2. BN-S300/BNK30 Indexable CBN Inserts Cutting Conditions
Halnn CBN Grade |
CBN Content |
Granularity (μm) |
Cutting Depth |
Cutting Condition |
BN-S30 |
85% |
8~12 |
1~10 mm |
Continuous
|
BNK30 |
97% |
2~4 |
≤1.5 mm |
Continuous
|
3. Common Indexable CBN Inserts Models for machining brake drum
WNMN/WNGN Indexable CBN Inserts
|
Type |
Dimension |
Standard Chamfer
|
Grades |
Corresponding tool holder
|
L(mm) |
φI.C(mm) |
S(mm) |
r(mm) |
BN-S30 |
BNK30 |
WNMN080404 |
8 |
12.7 |
4.76 |
0.4 |
S01015
S01020
S02020
S02025
|
|
|
CWLNR/L |
WNMN080408 |
8 |
12.7 |
4.76 |
0.8 |
|
|
WNMN080412 |
8 |
12.7 |
4.76 |
1.2 |
|
|
WNMN080604 |
8 |
12.7 |
6.35 |
0.4 |
|
|
WNMN080608 |
8 |
12.7 |
6.35 |
0.8 |
|
|
WNMN080612 |
8 |
12.7 |
6.35 |
1.2 |
|
|
WNMN/WNGN Indexable CBN Inserts
|
Type |
Dimension |
Standard Chamfer
|
Grades |
L(mm) |
φI.C(mm) |
φd(mm) |
S(mm) |
r(mm) |
BNK30 |
BN-S30 |
WNGA080404 |
08 |
12.7 |
5.16 |
4.76 |
0.4 |
S01015
S01020
S02020
S02025
|
|
|
WNGA080408 |
08 |
12.7 |
5.16 |
4.76 |
0.8 |
|
|
WNGA080412 |
08 |
12.7 |
5.16 |
4.76 |
1.2 |
|
|
4.Application Case
BNK30 CNGN120416 Indexable cbn inserts machining brake drum |
Component Materials |
FC250 (GG250),HB180~241 |
|
Selected Halnn CBN Inserts |
BNK30 CNGN120416 |
Roughness requirements |
Ra3.2 |
Testing Performance |
Insert Materials |
Cutting Speeds
Vc(m/min)
|
Feed Rate Fr(mm) |
Cutting Depth ap(mm) |
Tool Life/blade |
Halnn BNK30 |
657 m/min |
0.3 |
0.4~0.5 |
Improved 1.8 times |
Other CBN |
657 m/min |
0.3 |
0.4~0.5 |
......
|
5.Typical Application
Normally for machining gray cast iron component, such as brake disc, brake drum, Halnn researched BN-S30,BNK30 Indexable CBN Inserts. The following is the cnc machine tools for machining gray cast iron brake disc.