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Oilfield Drill Bits / Mining Drill Bits Sealed Journal Bearing With Gauge Protection

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[China]

Address: B2-0645 ROOM, CENTURY-TEA-TRADE-CENTER, NO.10 MALIANDAO ROAD, XUANWU DISTRICT, BEIJING, CHINA

Contact name:Jade

FLRT Bit

Oilfield Drill Bits / Mining Drill Bits Sealed Journal Bearing With Gauge Protection

Country/Region	china
City & Province	beijing beijing

Product Details

10 5/8" FSA217G, Tricone Drill Bit, Sealed Journal Bearing with Gauge Protection, TCR Bit

RECOMMENDED DRILLING PARAMETERS FOR APPLICATION

Types & IADC Code		116 117	126 127	136 137	216 217	246 247	326 327
WOB	KN/mm(Bit Dia.)	0.48~1.0	0.48~1.0	0.48~1.0	0.4~1.0	0.4~1.0	0.55~0.85
WOB	Lb/in. (Bit Dia.)	2742~5714	2742~5714	2742~5714	2285~5714	2285~5714	3140~4860
Rotation Speed (Rpm)		160~80	150~70	130~60	100~60	80~50	60~45

The above chart represents commonly available sizes and types, we do produce other sizes and types of rock bits which do not appear on this list. Please contact us for more information.

Design of journal bearings

Journal bearings must provide a balanced bearing geometry and adequate journal strength and must maximize the thickness of the high-pressure lubricating film developed during hydrodynamic lubrication. The thickness of lubricating films is affected by:

-Surface areas
-Journal and cone diameters
-Clearances between journal and cone

Manufacturing tolerances must be precise so that surfaces run true. Roundness of journal and cone surfaces is important, and if any part of a bearing is out of round, the effectiveness of the lubrication regime will be adversely affected.