Jiahan Epen Bearing constantly study the latest technology & materials and research & development of the new products

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EU Brief Description

EU tri-layer maintanence-free bushing have a base of lower carbon steel, onto which a porous bronze layer is sintered. PTFE mixtures are impregnated into the intersice of this bronze layer after rolling process completed. Eu has good physical & mechanical properties, also has certainly chemical properties. It is suitable for rotary, oscillating movement with performance of self-lub. Anti-wear, lower firction, lower noise.

1. Self-lub. Layer PTFE Mixture 0.01-0.03mm. After rolling process completed, PTFE mixtures are filled in intersice of bronze layer. Under normal operation, Part of PTFE mixture on top layer 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

Max. Load Capacity
Static Load	N/mm²	250
Dynamic Load	N/mm²	140
Max. Speed
Dry Running	m/s	2.0
Hydrodynamic Operation	m/s	>2
Max. PV Value
Short-Term Operation	N/mm² · m/s	3.6
Continuous Operation	N/mm² · m/s	1.8
Coefficient of Friction	μ	0.03~0.25
Operation Temperature Range	℃	-195~280
Thermal Conductivity	W(m · k^-1)	40
Coefficient of Thermal Expansion	λ_ST	11 · 10K^-1

Type	Water	Sea Water	Air	Alkaline Solutions	Neutral Solutions	Fuels& Lubricatis	Strong Acid	Weak Acid
EU	□	▲	□	□	★	★	▲	▲
EU G	□	▲	□	□	★	★	▲	▲
EU H	□	▲	□	□	★	★	▲	▲
EU S	□	▲	□	□	★	★	▲	▲
EU B	□	□	□	□	★	★	□	□
EU 304/316	□	□	□	□	★	★	□	□
EX	□	▲	□	□	★	★	▲	▲
★Good □ Common ▲poor