The elasticity of polyurethane casters

We come to know about the elastic polyurethane casters? In comparing with the chemical structure of ultra-high performance elastomer, and other polyurethane elastomer, it shows that the infrastructure is the key to the improvement of performance. The structure rigidity, compact structure and symmetric. Many of the same structure, which indicates that it's because of the elastic shares are in the same class as NDI and PPDI rubber. All studies of NDI PPDI, TODI are similar on the mechanical properties of the polyurethane. These properties include compression set and rebound. The elastomer, the setting of the compression ratio, the higher the greater the probability that a caster wheel or roller tread surface points. PPDI elastomer has a higher compression permanent deformation value, and the dynamometer test bed. Rebounds, are the standard of measuring weight to the sample, from a specified height, and determine the rebound height observed. Perfectly elastic material, there will be 100% of the rebound, and completely inelastic material will have a 0% rebound. All of the above urethane has relatively high rebound value. Please regularly check the stents and fasteners. The loose wheel shaft and the nut tightening and check weld or support plate for damage. Overload or impact will lead to deformation. Stent overloading tilting deformation caused by pressure on individual wheels wheel premature failure. If is the rod type, should be to tighten the nut or solid rivet and ensure the equipment support did not bend and pole installed correctly. Assembly caster wheel lock nut or locking should be used when the gasket. Expansion plug of castor device to ensure that the plug rod firmly installed in a casing. / news_78。