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Casters for Hospital Beds: An Engineering Selection Guide

Select hospital-bed casters as a complete mobility and control system across load, steering, linked locking, hygiene, noise and floor interaction.

Caster offset is the horizontal distance between the swivel axis and the wheel contact or axle reference that creates trailing behavior.

Static load describes supported weight at rest, while dynamic load addresses the more demanding conditions created during movement.

Floor hardness, joints, debris, slope and surface condition influence wheel size, tread, push force, noise and durability.

Calculate total system mass, nominal load per caster and a conservative design load that reflects uneven support and operating conditions.

Rolling resistance is the force that opposes steady wheel motion because the wheel, floor and bearings deform or dissipate energy.

Starting force is the peak effort needed to initiate motion, while rolling force describes effort after stable movement begins.

Larger wheels generally cross small obstacles more easily, but wheel material, bearing, load and floor still control the actual force.

Directional locking controls caster swivel orientation, while total locking typically restrains both wheel rotation and swivel movement.

A Central Locking caster for hospital bed uses a linked control system to change the operating mode of multiple casters from one control action.

A medical caster is designed around the mobility, braking, cleaning and equipment-integration needs of healthcare equipment.

Battery runtime is estimated from usable watt-hours divided by average power, then verified against route and duty-cycle testing.