FIELD: rock cutting tools, particularly roller bits.
SUBSTANCE: bearing comprises leg with inclined axle, cutter with annular boring installed on the axle and locking unit. The locking unit is made of rods installed in radial axle channels so that the rods may cooperate with cutter boring walls and with rod arranged in axial channel of the axle. Rods located in radial axle channels are T-shaped and have arch-shaped transversal parts. The axle is provided with annular boring formed in radial channel plane. Outer and inner diameters of arch-shaped members correspond to outer axle diameter plane. Outer and inner diameters of arch-shaped members correspond to outer axle diameter and annular axle boring diameter.
EFFECT: increased operational stability of bit bearing.
2 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SUPPORT OF CONE-ROCK BIT AND MOUNTING METHODS (OPTIONS) | 2006 |
|
RU2327849C1 |
| ROLLING CUTTER DRILLING BIT | 2005 |
|
RU2291270C1 |
| ROLLER DRILL BIT BEARING | 2005 |
|
RU2281374C1 |
| DRILLING CONE BIT | 2005 |
|
RU2285782C1 |
| CONE BIT BEARING | 2005 |
|
RU2281377C1 |
| CONE DRILLING BIT BEARING | 2005 |
|
RU2281375C1 |
| CONE BIT BEARING (VARIANTS) | 2005 |
|
RU2298075C1 |
| DRILL ROLLER BIT | 2005 |
|
RU2300620C1 |
| CONE BIT BEARING STRUCTURE | 2005 |
|
RU2283939C1 |
| ROLLING CUTTER BIT SUPPORT | 2005 |
|
RU2291271C1 |
