Description:
(1) High hardness and wear resistance
(2) Good heat resistance
(3) High strength and good toughness
New Bit No. |
Old Bit No. |
D/mm |
H/mm |
R/mm |
L/mm |
d/mm |
B/mm |
420 318 048 |
420 318 |
31.8 |
12.7 |
4.8 |
54 |
6 |
12.7 |
421 318 048 |
421 318 |
31.8 |
12.7 |
4.8 |
54 |
8 |
12.7 |
420 380 063 |
420 380 |
38 |
15.9 |
6.35 |
57 |
6 |
12.7 |
421 380 063 |
421 380 |
38 |
15.9 |
6.35 |
57 |
8 |
12.7 |
New Bit No. |
Old Bit No. |
D/inch |
H/inch |
R/inch |
L/inch |
d/inch |
B/inch |
425 318 048 |
425 318 |
1-1/4 |
1/2 |
3/16 |
2-1/8 |
1/4 |
1/2 |
425 381 063 |
425 381 |
1-1-2 |
5/8 |
1/4 |
2-1/4 |
1/2 |
1/2 |
427 318 048 |
427 318 |
1-1/4 |
1/2 |
3/16 |
2-9/16 |
1/4 |
1/2 |
427 381 063 |
427 381 |
1-1-2 |
5/8 |
1/4 |
2-11/16 |
1/2 |
1/2 |