These casters are designed for heavy industrial applications where operational dependability is a must. Swivel caster models are machined from drop forged steel. With cast-iron wheel, the casters can be used in high temperature working condition.
Very thick, that is true for both steel bracket and PA wheel. The caster itself is heavy and have strength to support up to few tons per caster. The Swivel head is combined of Flat and Cone Bearing so you will have no trouble operating.