External gear Three Row Roller Slewing Bearing for Mobile Harbour cranes /Railway slewing cranes.

Generally including portal crane, ship unloader, floating crane, etc., commonly used single row four-point ball slewing ring bearing, three rows roller slewing bearing and double row ball slewing ring bearing. These are our regular products, but also our company's main advantage products.
Among them, Three row roller slewing bearing is the most commonly used one.Three row roller slewing bearing can bear different loads simultaneously. The capacity load is the largest one comparing with other type slewing bearing. Due to the large dimension and solid structure, it is especially suitable for heavy-duty machinery, such as port crane,ship crane, etc.
WELCOME TO HGB BEARINGS.
We specialize in the production of manufacturing slewing ring bearings or turntable Bearings.
We offer high-precision and high-quality slewing bearings, which are widly used in many fields,such as hoisting and conveying machinery, construction engineering machinery, harbour machinery, wind power generation, radar and missile launchers and so on.
We specialize in the field of slewing ring bearings or turntable Bearings.
Slewing ring bearings or turntable bearings cover the following kinds:
1. Four contact ball slewing bearing (turntable bearing),  
2. Double-row different diameter ball slewing bearing (turntable bearing),
3. Three-row cylindrical roller slewing bearing (turntable bearing),
4. Cross cylindrical roller slewing bearing (turntable bearing).
What's more, HGB Bearing also offer wind power bearings and custom non-standard bearings.
If you want to know more about us, please see our website.
Please  attention: We just offer the best production and the best service!
Welcome to visit our factory and make cooperate with us. 
Thank you for your concerns.