Pneumatic casters are recommended for the greatest possible protection to both load and floor, or for off-road applications. If you transport fragile materials or parts, or if you move delicate instruments over rough floors, you should consider pneumatic offerings. Full pneumatics cushion the load on air, akin to an automotive tire.
Albion 90 Series pneumatic casters utilize rigs made of AISI 1045 drop forged steel, for strength and reliability. The 90 Series is highly recommended for rugged, heavy duty applications.