1) gray cast iron, it is used in low speed, light load and no impact load case, commonly used HT15-33 and HT20-40.
2) copper-based bearing alloy. Commonly used ZQSn10-1 phosphorous bronze bronze and ZQA19-4 aluminum
bronze, suitable for medium speed, high turbidity and self-lubricating
block with impact load conditions.
3)
oil bearing: the general is the use of bronze, cast iron powder sleeve
at the end of the amount of graphite to be pressed into the shape, the
high temperature sintering made of porous materials. Commonly used in low speed or medium speed, light load, inconvenience lubrication occasions.
4) Nylon. Commonly used nylon 6, nylon 66 and nylon 1010, nylon bearings with a
good run and wear, wear the mold guide crust soft surface does not hurt
the journal, good corrosion resistance, etc., thermal conductivity is
poor, after the water will expand.
5) bearing alloy (babbitt). It is tin, lead, copper, antimony and other alloys, with good wear
resistance, but the strength is low, can not be made alone bearing,
usually cast in bronze, cast iron, steel and other bearing matrix.
6) three load bearing material. There
are two commonly used: polypropylene fluoride steel body composite
materials and polyacetal steel body composite materials.
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