For Double wheels medical caster Most of Chinese factory use this design “A”

They make the wheel core first and Cover the “U” shape PU tread second....

From outside you can see the PU is thick,But actually the PU tread is thin Most of this design PU is only 3-4 mm thickness

We make the PU tread First. And put PU thread on mould inject Nylon hub second...

As you can see with the method we can make the PU tread more thick --- about 7-8mm. So can Ensure durably

We are now have 100mm and 125mm size. Same as our central locking casters we are adopt high quality nylon frame and German origin TPU tread. This caster usually used as medical bed casters, and medical cart casters.

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