| Size | 20" 508mm |
| Pin shank size | 7 5/8 |
| types of bearing | rolling beanngs |
| types of sealing | rubber rings |
| Bit type | SKG535 |
| IADC Code | 535 |
| Application formation | Medium soft with low compressive strength and harder abrasive stringers, such as hard shale, hard gypsolyte, soft limestone, sandstone and dolomite with stringers, etc. |
| Main characteristics of bit(cutting structure) | Large diameter deflection top spoon shaped inner row of teeth. The outer row is a wedge tooth, not equidistant teeth. |
| Normal WOB KN/mm (bit dia.) | 0.35--0.80 |
| Rotary speed (rpm) | 180~80 |
Model | TCI BIT, STEEL TOOTH BIT |
IADC CODE | 116 117 126 127 136 137 216 217 226 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347 |
417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 537 547 516 536 535 | |
available sizes: | From 2 7/8 to 26" larger sizes for hole opener bit ,reamer bit |
advantage | most favourable price and best quality |
bearing type: | sealed bearing and non-sealed bearing HJ(metal sealed journal bearing) HA (rubber sealed journal bearing Air cooled bearing type |
Formation or layer | soft ,medium soft ,hard,medium hard,very hard formation |
Button size (extra features) | Button bit,saw teeth 1) Y-Conical teeth 2) X-chisel teeth 3)K- wide teeth 4) G- Gague protection |
Material | Alloy steel ,carbide |
Packing |  Wooden case or steel case |
Payment terms | T/T,L/C,Western union |
Delivery terms | By sea or by air |
Delivery time | Within 3 to 7 days |
Market | Canada, USA,Middle east ,Africa,Europe |
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