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 |
640 222 032 |
640 222 |
22.2 |
19 |
3.2 |
51 |
6 |
641 222 032 |
641 222 |
22.2 |
19 |
3.2 |
51 |
8 |
640 254 048 |
640 254 |
25.4 |
22.2 |
4.8 |
54 |
6 |
641 254 048 |
641 254 |
25.4 |
22.2 |
4.8 |
54 |
8 |
640 285 063 |
640 285 |
28.5 |
25.4 |
6.35 |
57 |
6 |
641 285 063 |
641 285 |
28.5 |
25.4 |
6.35 |
57 |
8 |
New Bit No. |
Old Bit No. |
D/inch |
H/inch |
R/inch |
L/inch |
d/inch |
645 222 032 |
645 222 |
7/8 |
3/4 |
1/8 |
2 |
1/4 |
645 254 048 |
645 254 |
1 |
7/8 |
3/16 |
2-1/8 |
1/4 |
645 285 063 |
645 285 |
1-1/8 |
1 |
1/4 |
2-1/4 |
1/4 |
647 222 032 |
647 222 |
7/8 |
3/4 |
1/8 |
2-3/8 |
1/2 |
647 254 048 |
647 254 |
1 |
7/8 |
3/16 |
2-1/2 |
1/2 |
647 285 063 |
647 285 |
1-1/8 |
1 |
1/4 |
2-5/8 |
1/2 |
647 350 095 |
647 350 |
1-3/8 |
1-3/8 |
3/8 |
3 |
1/2 |
647 445 127 |
647 445 |
1-3/4 |
1-5/8 |
1/2 |
3-1/4 |
1/2 |