When selecting a castor castor, there are a lot of performance parameters, the eight parameters are important index. Below we see one by one. A, used for measuring hardness rubber tyre and wheel core materials and other hardness, shaw; 一个; Or; D; To represent. Compression strength in the process of compression test, the sample on the maximum compressive stress, mpa to bill for the unit. Second, the elongation under the action of tension, the sample fracture line when the distance between the increase and the ratio of the initial range, expressed as a percentage. Third, the impact strength material from the violent impact of free falling weight imposed by performance. Inch/pound, ft/LBS or test temperature stamping work. Four, under the weight of the deformation resistance under the long time heavy wheels flattens the site gets bigger, the test sample must be under static load, and then at the end of the compression time stated on the discharge load, the height of the wheel with location become table after compared with the original high percentage. Five, the increase of water absorption test sample weight. With the weight of the sample after a particular program test and the initial weight percentage said. Six, working temperature measurement under the rated load to the operating temperature range. Seven, bonding strength under 6 inches/minute speed glue the tire from the wheel core of stripping force needed for above, divided by the straight line width tires for the unit with the pound. Eight, tensile strength, the wheel from the required force when the cross section is broken. In pounds divided by the number of samples for the unit cross-sectional area ( Square inch) 。 Zhongshan big into castor co. , LTD is a production of various specifications of the series of industrial casters, casting products, electroplating products, industrial trolley, stamping sheet metal, plastic, PU casting and other products of professional manufacturers. Company in line with the management principle of 'people-oriented', brought together a group of mechanical processing, materials engineering, industrial automation, marketing professionals, committed to the improvement of technical level and the development of new products, strive for more products to become customers of qualified suppliers. Hotline: 400 600 - 8532 this paper label: casters into casters a: big into castor reminder is required for a choice of air-conditioner castor reference elements at seven o 'clock the next article: big into castor analyses industrial casters used in different nature in the industry