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heavy casters factory tests?


Impact test: the heavy casters vertical backward mounted on the ground test platform, so that the mass of 5kg (±2%) of the weight from a height of 200mm, the allowable deviation of±3mm position free fall impact wheel side of heavy casters, if the two rounds of the two rounds should be simultaneously impact. During the entire experiment does not allow any part of the separation of heavy casters and the experiment is completed after the Rolling of heavy casters, pivoting or braking function should not be damaged.

heavy casters
Resistance performance test: when testing this performance heavy casters should be kept dry and clean, the heavy casters placed on a ground-insulated metal plate, keep the wheel in contact with the metal plate, the heavy casters loaded on its nominal load of 5% to 10%. The resistance value between the heavy casters and the metal plate is measured with an insulation resistance value Tester (nominal open circuit voltage of 500V, the measured resistance value fluctuates within 10% and the loss on the product does not exceed 3W). For the conductance type heavy casters, the resistance value is not greater than 104 ohms, and the resistance of the antistatic heavy casters should be between 105 ohms and 107 ohms.
Static load test: heavy casters operate stably on the ground is a purely theoretical state. heavy casters static load testing process is the heavy casters with screws on a smooth horizontal steel test platform, 800n force is applied to keep 24h along the direction of the center of gravity heavy casters, eliminating the force after 24h check heavy casters status, after the experiment measured the amount of deformation of heavy casters does not exceed 3% of

heavy casters
Reciprocating wear test: heavy casters reciprocating wear test simulated heavy casters in daily use of the actual Rolling situation, which was divided into two kinds of test and no obstacles obstacle test, its heavy casters properly installed into the test platform, each test heavy casters load 300N, the test frequency is (6-8) times/min, a test cycle includes a forward and casters) or 30000 Times (W type heavy casters).70000 times (H-type heavy casters) or 20000 times (W-type heavy casters) on the level test bench without obstacles.During the test does not allow heavy casters or other parts of the detachment, after the end of the test each heavy casters should be able to travel its normal function, after the completion of the test heavy casters rolling, pivoting or braking function should not be damaged.

Rolling resistance and rotation resistance test: for rolling resistance test, the standard is three heavy casters mounted on a fixed three-arm base, depending on the Test level, the 300/600/900 N test load (including the quality of the base) is applied to the base, applying a horizontal traction so heavy casters on the test platform speed of 50mm/SSince the heavy casters rolling start friction is large and there is an acceleration test for 5s after measuring the level of traction, its size does not exceed 15% of the test load is qualified.
heavy casters

Rotational resistance test is a linear or circular motion Tester installed on one or more heavy casters so that the direction of the traveling direction of 90°. Depending on the Test level, for each heavy casters applied 100/200/300n test load. A horizontal traction force is applied so that the test platform heavy casters traveling speed of 50mm/S (tolerance±5%), and rotation occurs within 2S. Record heavy casters turn the maximum level of traction, its size does not exceed 20% of the test load is qualified.