Heavy Duty Direction lock Swivel TPR/Endurant/PU Caster Wheel(Zinc-plating)

There are many performance parameters for casters. When choosing a caster, these 8 parameters are also important indicators. Let's look at them one by one below.

1. Hardness

It is used to measure the hardness of rubber and other tire and wheel core materials. It is represented by Shore "A" or "D". Compressive strength During the compression test, the maximum compressive stress that the sample bears, in units of banknotes megapascals.

2. Elongation

Under the action of tensile force, the ratio of the increase in the distance between the marking lines when the sample is broken to the initial gauge length, expressed as a percentage.

3. Impact strength

The ability of the material to withstand the violent impact of free falling heavy objects. It is expressed in inches/pounds, feet/pounds, or punching work at the test temperature.

4. Deformation resistance under heavy pressure

After a long time, the wheel landing site becomes larger and flattened, that is, the test sample bears a certain static pressure load, and then the load is removed after the specified pressure time is over. The height of the wheel landing site after the change of the meter is compared with the original height percentage.

5. Water absorption

The increase in the weight of the test sample. It is expressed as the percentage of the weight of the sample after a specific procedure test to the initial weight.

Six, working temperature

Operating temperature range measured under rated load.

Seven, adhesion

The force required to peel the tire from the bonded wheel core at a speed of 6 inches per minute is calculated in pounds divided by the straight width of the tire.

8. Tensile strength

The force required to break the wheel from the cross section. Divide in pounds by the area (square inches) of the cross-section of the sample.