BLICKLE - wheels and castors Page 42
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Wheels and castors guide A few steps to the optimal product Select your product. Wheels, swivel and fixed castors or press-on bands / tyres can be used depending on the application. Swivel castors can rotate, while fixed castors run in a fixed direction. The castors can be attached using a top plate, bolt hole, stem, expander or plug-in pin. (See page 44, 104–111 for more information) 2 Wheel Swivel castor Fixed castor Press-on band / tyre Fixing Top plate Bolt hole Stem Expander Plug-in pin Determine the required load capacity. The load capacity required for a wheel or castor is calculated by dividing the dead weight of the transport equipment and its additional weight by the number of supporting wheels or castors. 3 Product type The result is then multiplied by a safety factor dependent on the application conditions. (See page 46 for more information) T = E+Z n xS T = required load capacity per wheel or castor E = dead weight of the transport equipment Z = maximum additional weight n = number of supporting wheels or castors S = safety factor Starting, rolling and swivel resistance. Manoeuvrability. The starting, running and swivel resistance of a wheel or castor is largely dependent on the tread, wheel bearing, wheel Ø, overall load and the condition of the surface. (See page 49 for more information) The manoeuvrability of a transport equipment is dependent on the quantity and type of the castors which are used, as well as how they are arranged. These factors in turn affect load capacity, manoeuvrability, control, cornering and stability. (See page 47 for more information) Low rolling resistance Rolling and swivel resistance • • • • • rolling and swivel resistance 1 large wheel Ø hard tread high tread elasticity ball bearing hard, smooth surface Low swivel resistance (swivel castors) • hard tread • crowned tread • large offset • hard, smooth surface load 4 Corrosion resistance. Temperature resistance. Chemical resistance. The service life and functionality of a wheel or castor depends to a certain extent on how well the materials used or their surface finish are capable of withstanding corrosion, temperature changes and chemical substances. Temperature and the duration of exposure are the most important factors. Information about the chemical resistance of the different materials we use is provided in the table on page 51. Example: checking resistance to hydrolysis 42 we innovate mobility www.blickle.com
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