FZF-2, FZF-2A (abroad that the DX) is a low-carbon cold-rolled steel substrate, sintered spherical bronze powder as an intermediate layer, the modified POM friction surface layer and three-layer firmly combined into one composite . Wherein the steel backing to provide sufficient mechanical strength and dimensional stability, high bronze powder as a combination of steel and plastic media. The surface layer is modified POM plastic. FZF-2 material in dry friction conditions, the performance is not very prominent. Some do not recommend completely dry friction conditions, while in the presence of trace amounts lubricating medium, its performance is significantly better than the other types of sliding bearing materials. In order to better play its lubricating ability, on its surface a lubricating oil storage pits. In heavy, low speed rotation or swing open and close frequently intermittent exercise or starting load larger occasions, it can not maintain the lubricant film formation or normal use.

FZF-2A POM composite structure with copper back FZF-2 structure, the same performance. Substrates for high-quality bronze alloy. In the anti-corrosion capabilities, when compared with steel, copper base with significantly enhanced to improve the reliability of the bearing. The bearing failure, FZF-2A on the journal has a strong protective effect.