(U)Low Profile Industrial Top Plate Locking Caster Wheels with Brake KT-LGD-75SB-U

Performance test of castors
A qualified castor product must undergo strict quality and performance tests before leaving the

factory. The following castor manufacturer KT castor introduces the five types of tests currently

adopted by the enterprise:

1. Resistance performance test
When testing this performance, the caster should be kept clean and dry. Place the caster directly

on a metal plate insulated from the ground, keep the wheel edge in direct contact with the metal plate,

and load 5% to 10% of its standard load on the caster. Measure the resistance between caster and

metal plate with insulation resistance tester.

2. Impact test
Install the caster vertically upside down on the ground test platform, so that the noon with a mass of

5kg falls freely from the position with a height of 200mm and a deviation of 3mm is allowed to impact

the wheel edge of the caster. If there are two wheels, the two wheels should impact at the same time.

3. Static load test
The test process of caster static load is to fix the caster on a horizontal and smooth steel test platform

with screws, apply a force of 800N along the center of gravity of the caster for 24h, and check the

condition of the caster after skimming the force for 24h. After the test, the measured deformation of the

caster does not exceed 3% of the wheel diameter, and the caster is qualified if its axis rotation, rolling or

braking function is not damaged after the test.

4. Reciprocating wear test
The caster reciprocating wear test simulates the rolling condition of casters in daily use. It is divided into

obstacle free test and obstacle test. The casters are correctly installed and placed on the test platform.

Each test caster load is 300N, and the test frequency is (6-8) times / min. a test cycle includes a back

and forth movement of 1m forward and 1m backward. During the test, no casters or other parts are

allowed to be separated. After the test, each caster shall be able to be used normally. After the test,

the rotation, rolling or braking function of the caster shall not be damaged.

5. Rotation resistance and rolling resistance test
The rotation resistance test is to install one or more casters on the linear or circular motion tester so

that their direction is 90 ° to the driving direction. Apply 100 / 200 / 300N test load to each caster

according to different test levels. Apply a horizontal traction force to make the running speed of

casters on the test platform 50mm / s and rotate within 2S. Record the maximum traction force for caster

rotation, and it is qualified if its size does not exceed 20% of the test load.

For the test of rolling resistance, the standard is to install three casters on a fixed three arm base,

apply a test load of 300 / 600 / 900N on the base according to different test levels, and apply a

horizontal traction force to make the caster speed on the test platform 50mm / s and keep it for 10s.

Since the friction force is large at the beginning of caster rolling and there is a speed, measure the

horizontal traction force after 5S, and it is qualified if its size does not exceed 15% of the test load.

After the above tests and qualified products can be recognized as qualified caster products, which

can play a greater role in different application fields. Therefore, all production enterprises should

attach great importance to the detection link after production.

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