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8 1/2 inch 215mm IADC 437 tungsten carbide insert bit journal bearing
Product Description
HENGJI BIT SPEC | IADC CODE 437 | ![](data:image/svg+xml;charset=utf-8,<svg height="1500px" width="1500px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)  | |
Diameter | 8 1/2'' | ||
Tooth Type | TCI | ||
Bearing Type | Elastomer sealed bearing | ||
Circulation Type | Mud fluid | ||
Thread Connection | 4 1/2 API REG PIN | ||
Nozzle | three jet nozzles | ||
Gauge Protection | Available | ||
Shirttail Protection | Available | ||
Operating Parameters | |||
RPM(r/min) | 150~70 | ||
WOB(KN) | 0.35~0.9 | ||
Formations | Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc. | ||
Application | water well drilling,oil &gas well drilling ,HDD,exploration,geothermal well drilling,drilling projects,etc | ||
![](data:image/svg+xml;charset=utf-8,<svg height="62px" width="137px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)