1. Select wheel material: first of all, consider the size of the road surface, obstacles, the use of residual material on the site (such as iron filings, oil and grease), the environmental conditions (such as high temperature, room temperature or low temperature) and the weight of the wheels can carry and other conditions to decide to choose the appropriate wheel material. For example, rubber wheels are not resistant to acid, grease and chemicals, while super polyurethane wheels, high-strength polyurethane wheels, nylon wheels, steel wheels and high-temperature-resistant wheels can be used in different special environments.
2. Calculate the load capacity: In order to be able to calculate the various casters need to load capacity, you must know the weight of the transportation equipment, the maximum load and the number of single wheels and casters used. Calculate the load of a single caster to give a certain insurance coefficient, in the ground is relatively flat, a single caster load = (total weight of the equipment ÷ the number of casters installed) × 1.2 (insurance coefficient); if the ground is not flat, the algorithm is, a single caster load = the total weight of the equipment ÷ 3, because regardless of the kind of uneven ground, there are always at least three wheels at the same time to support the equipment, the algorithm is equal to increase the insurance coefficient, the more reliable, to prevent inadequate load bearing. This algorithm is equivalent to increase the insurance factor, more reliable, to prevent insufficient load-bearing, resulting in a significant reduction in the life of the casters or lead to accidents.
3. Decide the size of the wheel diameter: usually the larger the diameter of the wheel the easier it is to push, the greater the load capacity is also the greater at the same time can protect the ground from damage, the size of the wheel diameter should be considered first of all the weight of the load and load under the starting thrust of the truck to decide.
4, wheel material hard and soft choice: usually wheels have nylon wheels, super polyurethane wheels, high-strength polyurethane wheels, high-strength artificial rubber wheels, iron wheels, pumping wheel. Super polyurethane wheels, high-strength polyurethane wheels regardless of indoor and outdoor ground traveling, can meet your handling requirements; high-strength synthetic rubber wheels can be applied to hotels, medical equipment, floors, wooden floors, tile floors, etc. require walking on the ground when the noise is small quiet traveling; nylon wheels, iron wheels are suitable for the ground is not flat or the ground there are iron shavings and other substances on the ground of the site; and pumping wheels are suitable for light loads and the road is not flat occasions. The pump wheel is suitable for light load and uneven road surface.