SF-2 BOUNDARY LUBRICATION BEARING

SF-2 boundary lubrication bearing

 SF-2 three layer composite material is a steel backing on the steel back sintering layer spherical bronze powder surface with polyoxymethylene in copper powder pores by rolling, SF-2 is a boundary lubricating material, so in the production process often rolled out the oil hole oil pit diameter 2.5~3.0mm depth is 0.3~ 0.5mm, the assembly must be when used in oil coated with grease pit.

Carbon steel substrate and copper powder +POM

Material properties

For high load low speed rotation, swing and under heavy load often open and close without refueling site, under the condition of boundary lubrication can be used for a long time without refueling, refueling process will greatly improve the service life of the shaft sleeve. Wear resistant layer on the surface of a standard oil hole can be used as a storage hole. At present, has been widely used in metallurgical machinery, mining machinery, hydraulic machinery, automobile, construction machinery, agricultural machinery, steel rolling machinery etc..

Technical parameters

Maximum load

250N/mm2

The use of temperature

~130 ℃ -40 ℃

Low speed operation

140N/mm2

The maximum line speed

Zhi Runhua

2m/s

Rotation, swing

70N/mm2

Oil continued to

>2m/s

The maximum PV value

3N/mm2.m/s

Thermal conductivity

4W (m.K) -1

Coefficient of linear expansion

11x10-6K

The coefficient of friction

0.05~0.20

ALL SPECIAL DESIGNS ARE PRODUCED ACCORDING TO YOUR REQUIREMENT.