FIELD: rock cutting tools, particularly roller bits.
SUBSTANCE: bit bearing comprises axle and rolling cutter connected to the axle by means of retaining split collar. Retaining collar defines trapeze in cross-section. Major trapeze base faces axle base and has alternating reinforced and non-reinforced parts. Side retaining ring surfaces are also discretely reinforced with wear-resistant material so that reinforced parts of side retaining ring surfaces and of base thereof are arranged in staggered order.
EFFECT: increased stability of drill bit bearing.
2 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ROLLING CUTTER DRILLING BIT | 2005 |
|
RU2291270C1 |
| CONE DRILLING BIT BEARING | 2005 |
|
RU2281375C1 |
| ROLLER DRILL BIT BEARING | 2005 |
|
RU2281376C1 |
| CONE BIT BEARING | 2005 |
|
RU2281377C1 |
| ROLLING CUTTER BIT SUPPORT | 2005 |
|
RU2291271C1 |
| DRILL ROLLER BIT | 2005 |
|
RU2300620C1 |
| SUPPORT OF CONE-ROCK BIT AND MOUNTING METHODS (OPTIONS) | 2006 |
|
RU2327849C1 |
| CONE BIT BEARING (VARIANTS) | 2005 |
|
RU2298075C1 |
| DRILLING CONE BIT | 2005 |
|
RU2285782C1 |
| DRILLING BIT BEARING STRUCTURE | 2006 |
|
RU2321721C1 |
