1. Advantages of nylon ball bearings
The nylon cage of the bearing, referred to as the plastic cage, is a new generation product that replaces the copper cage and the iron cage. Compared with the metal cage, it has great advantages.
1) It is light in weight and improves the flexibility of the bearing. If it is used in electrical appliances or power consumption products, it has a great effect on energy saving.
2), it has low noise and is the first choice for manufacturing silent bearings, especially for electrical appliances with high noise requirements, nylon cage is the first choice.
3) It can effectively prolong the service life of the bearing. The friction of the nylon cage to the rolling elements is lower than the friction of the metal cage to the steel ball, which greatly prolongs the service life of the bearing.
4) The manufacture is simple, which greatly improves the production efficiency and reduces the production cost.
2. The disadvantages of nylon ball bearings mainly include:
1) Nylon cage bearings can only work at room temperature, and a slightly higher temperature will easily cause the bearing to lock.
2) The compressive strength of the nylon cage is not as strong as that of the metal steel plate cage, and the load capacity is not high.
3) Nylon cage bearings cannot be used in environments that have a corrosive effect on them.
In short, the metal cage and nylon cage of the bearing have their own advantages and disadvantages. The user should choose to use it according to the use requirements. For example, if a low-noise electrical appliance is required to use a nylon cage bearing, it is best to use a motor with high temperature and high load. Choose steel stamping cage bearings.
Main purpose of plastic coated bearings:
Mechanical and electrical equipment , fitness equipment , food machinery , furniture and decorating materials
HDPE, PP, UPE rubber coated bearings material has proven to be relatively weak acid cross- environment (30% Cucl2 solution and 30% NaoH solution tested OK) it is suitable for most acid / base / salt / solvent / oil / gas and seawater corrosion environment. With general plastic bearings oil-free self -lubricating, anti-magnetic insulation properties, but lower mechanical strength , easily deformed. In comparison, the use of UPE material will have better strength , low friction characteristics and low temperature application characteristics (down to -150 °C).
Features
(1) good corrosion resistance at a certain temperature and concentration ability of various corrosive media and organic media
(2) high mechanical strength , high toughness can be maintained cutting at liquid nitrogen temperature (-196 °C)
(3)good self- lubricating, wear high
(4) Strong anti- adhesion
(5) low water absorption, excellent electrical insulation
(6) good resistance to high energy radiation
Main purpose
Mechanical and electrical equipment, fitness equipment , food machinery , furniture and decorating materials
PTFE high-temperature rubber coated bearings:
PTFE and PI as a new plastic material, proved to be all known engineering plastics and high temperature mechanical strength, dimensional stability and better performance , in which long-term use temperature of PTFE 260 °C, PI long-term use temperature is as high as 300 °C , and which has excellent corrosion resistance. The ball of rubber coated bearings is generally Zro2 or Si3N4 ceramic balls. In comparison the harsh operating environment of precision bearings , the drawback is due to the material itself is relatively expensive , so the higher cost.
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