Wheel diameter is the overall size of the wheel, measured across its widest point. The catalog spans roughly 1" to 18" in diameter — larger wheels generally roll easier over debris and uneven floors, and often carry more load.
Bigger wheels also raise the equipment’s overall height and increase swivel radius, so wheel diameter is a tradeoff between rolling performance and physical clearance, not a “bigger is always better” spec.
Rough or uneven floors (bigger wheels roll over debris and gaps easier), and any application where equipment height or ground clearance is constrained.
Maximizing wheel diameter without checking clearance. A larger wheel raises equipment height and increases the swivel radius needed — confirm both fit before sizing up.
Does a bigger wheel always roll easier?
Generally yes over debris, gaps, and uneven surfaces, but it also raises equipment height and needs more swivel clearance.
Does wheel diameter affect load capacity?
Often yes — larger wheels frequently (though not always) carry higher capacity ratings than smaller ones of the same material and bearing type.