A lot of people know pu castor this secret until now
Now a lot of people to know the secrets of the pu castor, using locknut or check washer to install castor confirm that expansion rubber lining installation location tighten in place. Factory with castor is different from firms with casters, tool for castor is different from the hospital bed with light-duty castor, shopping cart with the requirements of the caster must be completely different from those for carrying heavy load in the factory of the caster. In general, there are four kinds of bearings: spirit, is a special engineering plastics, suitable for humid and corrosive, rotational flexibility, resistance is bigger. After heat treatment of roller bearing can bear a heavy load, rotational flexibility. A number of physical and mechanical performance indexes can be adjusted through the selection of raw materials and formulations, flexible changes within a certain scope, so as to meet the unique requirements of users on the product performance. Such as hardness, is often the user an important index of products, polyurethane elastomer can be made into Shao Er A hardness of the 20 or so soft printing rubber roller, and can be made more than 70 Shao Er D rigidity rolling roller, this is the general elastomer material is difficult to do, can suit the needs of different users. Polyurethane elastomer is composed of many flexible chain segment and rigid chain segments of the polarity of polymer materials, with the improvement of rigid chain segment ratio and the increase of density of polar group, elastomer original strength and hardness will be increased accordingly. The wear resistance of polyurethane casters are often several times to dozens times of ordinary rubber materials. Metal materials such as steel, although very hard, but doesn't have to wear; Other rice huller rubber roller, such as milling, coal preparation with sieve sieve plate, stadium track the runway, forklift truck crane dynamic oil seal, elevator wheels and wheel roller skates, etc are also polyurethane elastomer. Need to mention here is that to improve the low and middle hardness, the friction coefficient of polyurethane elastomer parts, improve the bearing under the load of wear-resisting performance, can add a small amount of sulfide in this type of polyurethane elastomer aluminum and graphite or silicone oil lubricant. More news and information about pu castor please click: hynews / 402. html