Metal Sealed Bearing Bit
33 Items in Stock
YJ Series Metal Sealed Bearing Bit Main structure features: Metal face seal journal bearing. New processes of head beaning hardfacing and cone bearing silver plating are used to improve the load capacity，anti-galling ability and stability
YJ Series Metal Sealed Bearing Bit
Main structure features:
Metal face seal journal bearing. New processes of head beaning hardfacing and cone bearing silver plating are used to improve the load capacity，anti-galling ability and stability of the bearing. Various shapes of can be equipped on this series of bit, including scoop inserts, wedge inserts, conical- spherical inserts and double spherical inserts etc. Drilling process&formation and bit are efficient integrated by scientific insert shape selection to realize safety and high efficient drilling.
| Bit Size | （Bit Type） | |
| (Inches) | (mm) | |
| 7 7/8 | 200.0 | YJ437、YJ447、YJ517、YJ537 |
| 8 1/2 | 215.9 | YJ417、YJ437、YJ447、YJ517、YJ527、YJ537、YJ547 |
| 8 3/4 | 222.3 | YJ437、YJ447、YJ517、YJ527 |
| 9 1/2 | 241.3 | YJ437、YJ447、YJ517、YJ537、YJ547 |
| 9 7/8 | 250.8 | YJ437、YJ517 |
| 10 1/2 | 266.7 | YJ517、YJ537、YJ547 |
