How to select the best kind of industrial castors

Conceptually we are used to a castor as a mechanical assembly which allows us to replace sliding motion by rolling motion, often with an inbuilt turning mechanism to permit both easy forward movement as well as simple changes of direction. It is useful to consider the ubiquitous trolley wheels Sydney in its elements and to identify the characteristics of those elements as well as the results of their interactions in order to optimally specify a castor installation. We use the following international standards, nomenclature and characteristic descriptions to aid our customer recommendations.

· The tread is the wheel’s outer surface, i.e. the part that comes in contact with the ground. It can be smooth or engraved with raised patterns to increase its grip on the ground.

· The covering, or rolling strip, is the outer ring. It is made of different materials and characterizes the appearance of the wheel. The covering is fixed when joined with the wheel centre body as a single solid piece (using an adhesive or through a mechanical connection) or fitted when mechanically assembled on the wheel centre body.

· The wheel centre body is the wheel part that connects the covering to the bore. It comes in various shapes and is made of different materials; it can be a single piece or two or more parts joined together.

· The bore is the middle part of the wheel that houses the axle or the bearing surfaces that make rotation easier (ball bearings, roller bearings, plain bearings, etc.). Depending on the construction methods and materials forming the covering, wheels can be divided into three families: rubber wheels, polyurethane wheels and monolithic (or hard tread) wheels.

· Castor wheels Sydney covering consists of an elastomeric made from natural and/or synthesized rubber. The rubber used to build industrial wheels can be vulcanized or injection molded.

· Special mineral loads and vulcanizing agents are added to the rubber that undergoes a process called “vulcanizing”. During this process, the rubbers molecular structure changes significantly: the “pasty” material at the beginning of the process becomes a non-fusible product that acquires and, over time, maintains the form of the mould in which the reaction occurs. The ring obtained is mechanically assembled to the wheel centre body.

· Vulcanized rubber has enhanced elastic deformability properties within relatively broad ranges of applied traction and compression loads. So that you can automatically deforms the elasticity of rubber.