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13 3/4″ MR532 Tricone Bit
IADC 532 · Φ349mm · 123kg · 6 5/8″ API
Cutting structure & formations
Gage rows: Off-set chisel. Inner rows: Conical. For medium-soft formations with low compressive strength, typically shale, soft limestone, dolomite with interlayers, coal ore.
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 13 3/4″ / Φ349 mm, weight 123 kg
- Connection 6 5/8″ API, bearing Roller-Ball-Roller-Thrust Button/Open Bearing
- WOB 27,500–68,750 lbs, rotary speed 80–110 rpm
Technical parameters
| Model | MR532 |
|---|---|
| IADC code | 532 |
| Diameter | 13 3/4″ / Φ349mm |
| Thread | 6 5/8″ API |
| Weight | 123 kg |
| Bearing type | Roller-Ball-Roller-Thrust Button/Open 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 | 27,500–68,750 lbs |
|---|---|
| Rotary speed | 80–110 rpm |
| Air back pressure | 0.2–0.4 MPa |
| Formation strength | 15,000–23,000 Psi |
