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What's Lubrication & Seal of Slewing Ring Bearings?
 

What's Lubrication & Seal of Slewing Ring Bearings?

Lubrication of slewing bearing
Slewing bearing are usually operating in high-load & low-seep working condition,it is recommended to fill lubrication grease to do a good job.There are kinds of lubricate grease,high temperature lubricate grease,etc.Customer could choose the most suitable lubricate grease based on actual condition.It is listed with recommended lubricate grease types in Form 8.
 

support     structure

&seal form

Operating condition

Lubrication

Grease

Part

Name

Type

Holistic & partial cage or plasitc partition rubber seal

Lowtemperature,normal temperature,Wateriness?

-40?~+60?

Raceway

Limebasegrease

ZG-3

ZG-4

Gear

Carbonlimebasegrease

ZG-S

Mul-genus

Partition

 

 

 

 

 

Labyrinth Seal

High  temperture,

Wateriness

40?~40?

Raceway

Lithiumbasegrease

ZL-1

ZL-2

MoS2 Compoundlimebase grease

NO.3

Raceway

No.4 high temperature grease

ZN6-4

80?~180?

Raceway

MoS2 Compoundlimebase grease

NO 2

Gear

No.4 high temperature grease

ZN6-4

Normal temperature, Corrosion of

sea water proof

Raceway

No.2aluminumbasegrease

ZU-2

Gear

No.2aluminumbasegrease

ZU-2


Seal of slewing bearing
The seal of slewing bearing is used for avoid leakage of filled lubricate grease on one side,and the other side is to avoid inleakage of outer dust,impurity and water which can casue abnormal operation of slewing bearing.As slewing bearing is operating in the condition of high-load & low-speed,there are two seal structures usually used,rubber and labyrinth.Rubber is widely used because of simple structure,little space occupied,good seal capability.But it will aging easily at high temperature and lose seal capability.So it is recommended to use labrinth when in the high temperature condition.

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