Home / Products / Tricone / Medium 5xx / 10 5/8″ MR535
10 5/8″ MR535 Tricone Bit
IADC 535 · Φ270mm · 74kg · 6 5/8″ API
Cutting structure & formations
Gage rows: Conical. Inner rows: Conical. For hard formations with high compressive strength.
ORIGINAL · EN Off-set chisel on gage, conical on inner rows. Designed for medium-soft formations with low compressive strengths such as shale, soft limestone, dolomite with interlayers and coal ore.
Shirttail protection
Hardmetal on lug; Wear resistant carbide on shirttail lip and lug.
ORIGINAL · EN Hardmetal on lug; Wear resistant carbide on shirttail lip and lug.
- Diameter 10 5/8″ / Φ270 mm, weight 74 kg
- Connection 6 5/8″ API, bearing Roller-Ball-Roller-Thrust Button/Sealed Bearing
- WOB 21,250–53,130 lbs, rotary speed 80–110 rpm
Technical parameters
| Model | MR535 |
|---|---|
| IADC code | 535 |
| Diameter | 10 5/8″ / Φ270mm |
| Thread | 6 5/8″ API |
| Weight | 74 kg |
| Bearing type | Roller-Ball-Roller-Thrust Button/Sealed Bearing |
| Circulation | Jet Air |
| Inner row teeth | Conical |
| Gage row teeth | Off-set chisel |
| Gage bevel protection | Round |
Operating suggestions
Actual parameters must be set per application
| Weight on bit | 21,250–53,130 lbs |
|---|---|
| Rotary speed | 80–110 rpm |
| Air back pressure | 0.2–0.4 MPa |
| Formation strength | 15,000–23,000 Psi |
