API coal well mining rock bits IADC545 with discounted cost
Product Description
Cutting Structures
Bit performance depends heavily on cutting structure design. Our system allows us to optimize cutting structure designs by using the proper selection and combination of insert shape, projection, diameter, and grade. By selective placement of insert and insert row location, we can modify clearances to make our cutting structures as aggressive or tough as possible
Product Specification
| Basical Specification | |||
| IADC Code | IADC545 | ||
| Size of Rock Bit | 6 1/4 inches | 7 7/8 inches | 9 ” |
| 159mm | 200mm | 229mm | |
| Thread Connection | 3 1/2” API REG PIN | 4 1/2” API REG PIN | 4 1/2” API REG PIN |
| Product Weight: | 20kgs | 34KG | 50KG |
| Bearing Type: | Roller-Ball-Roller-Thrust Button/Sealed Bearing | ||
| Circulation Type | Jet Air | ||
| Operating Parameters | |||
| Weight on Bit: | 12,504-32,154Lbs | 15,750-39,380Lbs | 18,000-45,000Lbs |
| Rotary Speed: | 110-80RPM | ||
| Air Back Pressure: | 0.2-0.4 MPa | ||
| Ground Description: | Medium hard and abrasive rocks such as sandstone with streaks of quartz, hard limestone or chert, hematite ores, hard, well-compacted abrasive rock such as: sandstone with quartz binder, dolomite, quartzite shale, magma and metamorphic coarse grained rocks. | ||
The “Heart” of every rotary product is its bearing. Respecting this concept, Far Eastern Drilling continues to improve bearing designs through exact heat treatment and precise manufacturing processes.
Shirttail designs with specific thickness allow closer placement of carbide inserts to shirttail contours.
