5 Email sales@alliedindustrial.com.au | Phone 02 9912 5105 How to Choose the Correct Castor and Wheel environment. Polyurethane and thermoplastic rubber l Divide this by the number of castors that will be On Floor Surface l Generally a soft tread rolls better on a hard floor and a l Ensure that the wheel is large enough to pass over l Harder treads require less effort to start the wheel Many varying and individual factors must be balanced to make a castor selection that will do the best job for you therefore there is no simple formula or rule that can be followed in selecting the proper castors. However AIP have put together some broad guidelines that should be useful when making your castor selection. l Domed tread wheels require less force to roll especially l Add together the maximum expected load for the hard tread rolls better on soft floors. Choosing The Castor Wheel Based Allied Industrial Products aka AIP masters of castors offers many different types and styles of castors and wheels. Our castor products are available in various specifications and combinations and are available in general duty, medium duty, and heavy duty capacities cracks and obstructions. effort over rough ground high resilience treads are best. (TPR) are virtually impervious to most solvents and Calculating The Castor Load Rating turning on smooth surfaces. For sustained lower push attached prevent damage to floors at high load ratings. chemicals. floors as they resists particle embedment. l Add 20-30% to the load as a safety margin Nylon or polyurethane treads are more suitable for dirty equipment and the weight of the equipment itself on carpeting. Flat profiles tend to spread the load and l Natural rubber is not recommended in corrosive Choosing The Castor Wheel Diameter l As a rule of thumb, the larger the wheel, the easier it is to push and to pass over bumps and minimize vibration. Roller Bearings are not suitable for high speed Choosing The Castor Bearing/Bush Type l Ball Bearings are used in applications where heat can build up due to friction. Ball bearings offer the lowest- friction and therefore the lowest push-effort. l Roller Bearings are used in high-impact applications. environments. Plain bushes are also used to reduce cost. Choosing The Type Of Brake & Castor Configuration Each arrangement offers its own advantages and performance qualities. l 4 Swivel - Maximum maneuverability. Can be moved (more than 6 km/h). l Plain Polymer bushes are used in corrosive back & forth and sideways. Perfect for confined spaces. l 2 Swivel 2 Fixed or DL - Good maneuverability except in confined spaces (cannot move sideways). l 4 Swivel 2 Fixed - High maneuverability. Can be turned narrow tubes only. threaded tube end. l Plate Mount for equipment that has a smooth flat base threaded hole (such as a nut welded into tube) or a of round, square tube sizes. applications that involve long distances or high in own length but not moved sideways. - Expanding Adaptors Suitable for installing into tubular legs for wheel diameters up to 125mm. - Grip Neck & Friction Stems Available to suit very - Solid Pintles Ideal for large diameter wheels & - Pintle Bolts Used when screwing directly into a l Bolt Hole Mount fitted by a stem of some sort. - Threaded Tube Ends Available to suit a wide range Choosing Castor Fittings Castors are generally mounted to a piece of equipment in one of two ways: such as a sheet of wood or steel. vibration.
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