BLICKLE - wheels and castors Página 50
Oferta para clientes comerciales**Los mejores vendedores de Blickle
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
excluyendo el transporte
Wheels and castors guide Environmental factors Corrosion resistance. Temperature resistance. Electrical conductivity. Chemical resistance. Corrosion resistance Temperature resistance Electrical conductivity Chemical resistance The surfaces of wheel and castor components have different corrosion resistance levels depending on the surface coating. The functionality of a wheel or castor is also dependent on temperature-related factors. The relevant temperature for the tread is a combination of the ambient temperature and the heat generated by friction. The amount of friction depends on the material, shape and load of the tread, as well as the length and surface properties of the distance travelled. The electrical conductivity of wheels and castors provides protection against electrostatic discharges caused by transport equipment or the transported goods. The electrical conductivity is tested in accordance with ISO 22878. Special attention must be given to the chemical resistance of a wheel or castor if they are likely to come into contact with aggressive substances. The table to the right provides reference values that you can use to compare the chemical resistance of different materials to chemical substances. Please note that chemical resistance depends not only on the nature of the aggressive substance but also on how concentrated it is, the duration of contact and other conditions like temperature and air humidity. Salt spray testing in accordance with DIN EN ISO 9227 is one of the most common test procedures for assessing the corrosion protection of different materials. The parts are corroded using a sprayed salt solution, and the amount of time until the formation of white rust and red rust is measured (in hours). Surface protection zinc-plated, blue zinc-plated, yellow White Red rust rust ~48 h ~96 h ~144 h ~240 h zinc-nickel ~720 h powder coating ~192 h The advantage of zinc-plated components is that they retain their corrosion protection despite minor damage. Zinc-plated parts are put through an additional chemical treatment called passivation. Yellow passivation provides greater protection against corrosion than blue passivation. A zinc-nickel coating prevents the formation of white rust and can resist high temperatures. It can also be passivated and sealed. Electrostatic powder coating involves spraying the powder used for the coating onto the component and then heating it. Friction resistance increases slightly at low temperatures. Furthermore, factors like cold and heat can reduce the load capacity and stability of plastics. The load capacity and service life of treads decrease considerably with higher temperatures. High static loads and high temperatures also increase the risk of the wheel flattening. For this reason, Blickle developed special treads and wheel materials that can be used at high temperatures. For more information, please refer to heat-resistant wheels and castors on page 440–470. The rigidity and hardness of many elastomer treads (particularly rubber and many polyurethane elastomers) increase significantly at low temperatures, while losing a significant amount of their elasticity. However, Blickle does provide special polyurethane elastomers that remain elastic and flexible in temperatures down to -30 °C. A wheel or castor is considered electrically conductive if its ohmic resistance does not exceed 104 Ω (product code suffix: -EL or -ELS). A wheel or castor is considered antistatic if its ohmic resistance is between 105 and 107 Ω (product code suffix: -AS). A wheel or castor is considered as electrostatic discharge if its ohmic resistance does not exceed 109 Ω (product code suffix: -ESD). The coating can be removed from coated components like rims or wheel centres at the point where the assembly is fixed to the transport equipment to ensure that they are conductive. Conductivity should be tested by the operator at regular intervals as it can be impacted by dirt on the tread or other environmental factors. Mixtures of different chemicals can have completely different effects to those listed in the table. The information provided is by no means legally binding. Please contact us if you are uncertain about anything or have any questions. Corrosion-resistant stainless steel is well known for its corrosion resistance. The most commonly used material (1.4301 / AISI 304) is a high-alloyed chromium-nickel steel. Stainless steel ball bearings are made from material 1.4034 / AISI 420. 50 we innovate mobility www.blickle.com
636 Páginas | Válido hasta 12/2023 | Página anterior | Página siguiente
Elija su idioma
Cuestiones jurídicas
El fabricante es el único responsable del contenido, el precio y los detalles de los productos y ofertas presentados en los catálogos. Sujeto a cambios técnicos y ópticos por parte del fabricante y a excepción de errores.
Formulario de pedido de productos especiales
El servicio de compras ToolTeam®
¿Busca productos que aparecen en el catálogo pero que no se pueden comprar directamente en línea?Nuestro servicio de compras estará encantado de hacerle una oferta individual y no vinculante.