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Sliding Bearing

Epen constantly study new materials and new products development

Jiashan Epen Bearing Co.Ltd. is a professional manufacturer of plain bearings and wear plates, and has grown rapidly to a point where now all types of plain bearings can be supplied. Standard catalogue sizes, special sizes and designs can be produced at competitive prices and to a high quality standard. Jiashan Epen Bearing Co.Ltd. serves both the domestic and international markets. The Jiashan Epen Bearing Company intend to stay at the forfront of this market.


EX Brief Description

EX Brief Description

EX tri-layer low maintanence plain bushing have a base of lower carbon steel, onto which a porous bronze layer is sintered. Acetalcopolyer (POM) is impregnated into the intersice of this bronze layer after rolling process completed. Lubrication indents are stamped into this layer. EX has good physical & mechanical properties, also has certainly chemical properties. This material has good machining performance if required.

EX Structure and material characteristics

EX Material

1. Self-lub. Layer POM 0.3-0.5mm. After rolling process completed, POM are filled in intersice of bronze layer, lubrication indents are stamped, which are full of oil grease, which will be removed and transferred on the mating surface, forms a physically lubricating film, which will reduced the firction coe. and protect the mating shaft.
2. Porous bronze layer; The layer provides bonded strength of self-lub. Layer.
3. Steel Backing The layer provides load & thermal conductivity
4. Copper / Tin layer.

EX Material Characteristics

Max. Load Capacity    
Static Load N/mm2 250
Dynamic Load N/mm2 140
Max. Speed    
Pre-Lubricated m/s 2.0
Oil Grease Lubrication Continuous Operation m/s >2
Max. Pv Value N/mm2 · m/s 2.8
Coefficient of Friction μ 0.05~0.20
Operation Temperature Range -40~110
Thermal Conductivity W(m · k-1) 42
Coefficient of Thermal Expansion λST 11 · 10K-6
※ Initial pre-lubrication at assembly is necessary.