TEMPERATURE
The normal working temperature of the slewing rings ranges from -25 up to +70°C. Lower or higher temperatures are possible but require special design provisions by our Engineering Department. 
 
ENVIRONMENT
In case when the working environment is particularly aggressive :
. sea atmosphere,
. dust or abrasive environment (sand, coal...),
particular protection devices must be incorporated such as :
. labyrinths,
. shields,
. oil-bath.
Preventive maintenance operations will be increased to ensure normal operation.  

SHOCKS, VIBRATIONS
If the slewing rings are continously sollicited by shocks and/or vibrations, the customer must mention it in the specifications in order to design the right piece.

SPEED
The slewing rings can work whether by oscillating motion or continous motion. It is necessary to check that the circumferential raceway speed remains within the acceptable limits of respective bearing's capacity.

Bearing	Type lubrication	Limited speed (n.Dm)
Crossed rollers	Standard grease	24 000 to 35 000	Curve 1
Balls type	Standard grease	40 000 to 65 000	Curve 2
Balls type with cage	Grease or oil	70 000 to 130 000	Curve 3
Specific desing	Oil or special greases	Consult us	Area 4

In any case, it is essential to consult ourEngineering Department with the precise operating conditions.