A select, universal wheel (
Be sure to consider its use.
What is in the ground driving wheels (
And if it is the ground smooth, so universal wheel (
Can choose flexible steering, foot tire surface roughness enough castor.
Two, if it is pot-holed roads.
Be considered for universal wheel, have sufficient capacity for the rutted road very prone to only 2 -
Three castor contact surface.
In addition, also want to choose is with enough thickness of steel plate welded together the universal wheel (
Three, if it is applied in some hospitals of castor, you need to consider the voice of the caster wheel contact with the ground condition, the choose and buy of castor must generate large noise.