What are the performance parameters that should be paid attention to when choosing casters?

Casters have many performance parameters, which are also important indicators when selecting casters. Now let's look at it one by one.

Hardness

Used to measure the hardness of rubber and other tire and wheel core materials, expressed by Shaw's "A" or "D".

compressive strength

During the compression test, the maximum compressive stress of the specimen is in megapa.

II. Elongation

Under the action of tension, the ratio of the increment of the distance between the markers to the initial distance is expressed as a percentage when the specimen is broken.

III. Impact Strength

The ability of a material to withstand the violent impact of a freely falling weight. The stamping work is expressed in inches/pounds, feet/pounds or at test temperature.

4. Deformation Resistance under Heavy Pressure

The wheel landing position becomes larger and flatter after a long time, that is to say, the test sample bears a certain static pressure load, then unloads the load after the end of the specified compression time, and the percentage of the height after the wheel landing position changes from the original height.

5. Water absorption

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

VI. Working Temperature

Working temperature range measured under rated load.

7. Adhesion

The force required to peel a tire off the bonded 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 a wheel from a cross section. In pounds divided by the area of the cross section of the sample (square inches).