Characteristics of zinc-based bearing alloy ZA303

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Zinc alloy in the early 1980s, China began to introduce and digest the work, and successfully used to replace copper alloy antifriction parts and molds, instead of bronze and brass wire mother, bearing, slider and slide casti ngs and standard alloy of ZA27 (National Institute of Standards GB/T1175-1197)

By alloy composition, based on the adjustment and adding trace elements, preferably out of ZA303. The alloy to retain all the advantages of ZA27 outstanding feature is the greatly improved the toughness of the zinc alloy at room temperature and low temperature conditions (room temperature 15% to 18% of -40 ℃, 10%). Therefore, the alloy can be properly

For applications such as heavy, thick, bulky and low temperature, to cross the harsh conditions of change and impact loads, to broaden the applications of zinc alloys.miniature bearing
Characteristics of zinc-based bearing alloy ZA303:
(1) coefficient of friction, high thermal conductivity, the life of 2 to 3 times that of the tin bronze, suitable for medium and low speed overload situations.
(2) ease of processing, surface roughness in the fini sh turning up.
(3) casting performance, compact casting can be cast in the casting wall thickness of 2.5mm.
(4) has high strength, high toughness and good low temperature performance, to overcome the low-temperature brittleness of the ZA27 alloy.ball bearing suppliers
(5), light weight, 40% lighter than copper, easy to install.
(6) low cost, more than 40 percent lower costs than tin bronze.double row bearing
(7) has a non-magnetic, non-spark performance.