Description
For
more information, pls contact:
sales*6(at)cdhptec.com
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AMRS series bit adopts rubber seal with roller bearing, which is
the ideal and economical tool for drilling applications where
middle to low WOB and high RPM are required.
The size range of AMRS series bit is *2 1/4 - *7 1/2 inch such as
*2 1/4, *2 3/4, *3 3/8, *3 1/2, *3 5/8, *4 1/2, *4 3/4, *5
1/2, *6, *7 1/2 and its IADC code is **4 - **5, such as
**4, **5, **5, **5, **5, **5, **5, **5, **5, **5, **5, **5, **5,
**5, **5, **5, **5, **5, **5, **5, **5.
Main structure features:
Sealed roller bearing structure. With rollers arranged in
grooves recessed in the cone body the size of the bearing journal
is increased, therefore, with the ability of enduring high
WOB and applying lor high RPM.
Thrust bearing surfaces are hardfaced and treated with
friction reducing
technology.
All rubber compensator is used which can limit
pressure differential and prevent drilling
fluid from entering the lubrication system and this provides
the bearing system with good assurance of
lubrication.
