Flexible rotation is the secret weapon that pu castor, 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. Castor often the more the more easy to promote, the greater the load capacity, but also can protect the ground intact, wheel diameter size first consideration should be given the choice of bearing and the weight of the load on the truck starting under thrust to decide. Pu castor technology in the continuous innovation, single wheel rotation, the more the greater the effort, roller bearings can carry heavier load, rotational resistance is larger; Single wheel installed on the high quality ball bearing can bear a heavy load, turn the lighter, flexible peace. Flexible rotation is the secret weapon that pu castor, more news and information about pu castor please click: hynews / 396. html