16 Russia 
7 Singapore 
2 UK 
2 China 
1 Finland 
1 France 
1 Germany 
1 Nigeria 
1 Brazil 
Tricone Roller Bit Hard Rock Drill Jz China Manufactures - China
price: contact company for price
4 - Sealed Roller Bearing- These bits have an o- ring seal with a grease
reservoir for bearing cooling.
The seal acts as a barrier against mud
and cuttings to protect the bearings.
5 - Sealed Roller Bearing with Gauge Protect- Carbide inserts in the heel of the cone.
6 - Sealed Journal Roller Bearing- These bits are strictlt oil/ grease cooled with nose bearings, o- ring seal and a race for maximum performance.
7 - Sealed Journal Rolling Bearing with gauge protect- Carbide inserts in the heel of the cone.
Company Contact:
- Posted By: Hejian Deris Petroleum Drilling Equipment
- Phone: 8618831737902
- Address: china hebei, hejian , China
- Email:
- Website: https://hjdrs.en.alibaba.com
Published date: June 1, 2014
- Business Description: Company Competitive Power:
1 - the most professional and experienced senior engineers in this field
guarantee high quality products.
2 - MANUFACTURER position ensures competitive price.
3 - Sincere salesmen are our business basis.
4 - Different sizes and dimensions are available
5 - A certain number of bulk stock ensures fast delivery
6 - Best after sales service Welcome to inquiry and visit our factory
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