PM-W POM Coated Steel Washer
PM-T POM coated steel backing boundary lubricating slide bearing washer
is made of triple layer composites: carbon steel as base, porous bronze intermediate layer, POM & Pb (or non-Pb mixture) inner surface layer. The POM inner layer pressed with many oil pockets to store enough grease. Also it called SF-2 in China and DX,PAP P20 overseas.
The products are widely used in machinery industry, such as auto machines, punch machine, forging and pressing machine, vehicle chassis, lifting equipment, mining machinery, steel industry, etc.
PM-W Steel backing POM Coated washer is a boundary lubricating bearing,the surface sintered POM plastic with oil pockets to retaining oil for lubricating when using.FM-W means steel backing in washer type, also it can be in material of bronze (PMB-W) and stainless steel (PMSS-W).
Technical Data
1.POM composite 0.3~0.5mm as sliding layer
2.Porous bronze 0.2~0.3mm
3.Metal backing 0.4~2.2mm*
4.Tin-plating 0.005mm or copper plating 0.008mm
* Metal in carbon steel, bronze or stainless steel.
Performance |
Data (*According to steel backing) |
|
Load capacity P (Dry friction) |
Static load |
250N/mm2 |
Dynamic load |
140N/mm2 |
|
Max linear speed V |
Dry friction |
/ |
Oil lubrication |
2.5m/s |
|
PV value limit |
Dry friction |
2.8N/mm2.m/s |
Oil lubrication |
22N/mm2.m/s |
|
Friction coef u |
Dry friction |
/ |
Oil lubrication |
0.08~0.25 |
|
Working temperature |
-40oC~+130oC |
|
Thermal conductivity |
13W/mk |
|
Linear expansion |
11*10 -6/K |
|
Products Standard: ISO3547 (Replaces DIN1494)
