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Power Ends

Pinion and Bull Gear

Premiums Pinion and Bull Gear are made from similar material to the crankshaft and with a high precision double helical gear with less backlash than any of our competitors. The precision gears ensure power is transmitted over the full width

 
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Crossheads and Guides

Premiums crossheads are manufactured from high quality, cast steel and the guides are manufactured from a quality manganese bronze normally used in bearings. This combination of materials provides a low friction interface and generates very

 
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Crankshaft

Premiums Crankshaft is manufactured from a modified 4340 material with high nickel content to reduce crack initiation and propagation. It has a high chrome content to prevent corrosion. Premium crankshafts are static balanced for smooth oper

 
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Connecting rods

Premiums Connecting rods are made from high specification alloy steel. Premium connecting rods are machined with high precision to ensure the alignment between the crankshaft and the crosshead.

 
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About us

Premium is service. We do not just say it, we mean it, and most importantly, we do it. We are National Premium Oilwell.

Copyright © 2002-2011 National Premium Oilwell Machinery Co.,Ltd

Copyright © 2002-2011 National Premium Oilwell Machinery Co.,Ltd