Cart wheels span a wider load range than most caster sizes — from 600 lb light shop carts up to 900 lb polyurethane heavy-duty industrial. Pick by wheel size first, then by tread material based on your floor and environment. The 12 products on this page cover the four wheel-size brackets that most B2B cart applications fall into.
For warm-floor manufacturing. Phenolic resin handles up to 300°F continuous and won’t soften or deform near ovens, dryers, paint booths.
Gentle on smooth concrete and tile. Chips on rough or debris-strewn floors — pick a different tread if floor condition is poor.
The heaviest single-caster in this collection. Polyurethane gives non-marking floor protection plus the longest service life under continuous daily use.
Resists oil, grease, water, solvents. Won’t chip like phenolic. The default spec for daily-use industrial carts.
The quiet option. TPR runs at low noise levels through rough or uneven floors. Common spec for healthcare, retail back-of-house, and food service.
Non-marking, oil-resistant, slightly softer durometer than polyurethane — rolls easier across debris.
For outdoor or rough-terrain carts. The semi-pneumatic tire absorbs shock from gravel, expansion joints, and dock-plate transitions.
Will not go flat (no air inside). Best when the cart sees outdoor surfaces or transitions between paved and unpaved areas.
Polyurethane is the default for daily-use carts on indoor concrete — longer service life, doesn’t chip, non-marking, handles oil and water. Phenolic is the spec for heat (up to 300°F continuous — paint booths, ovens, foundry-adjacent manufacturing) and for cost-sensitive applications where the polyurethane premium isn’t justified. Phenolic chips if the cart crosses rough floors or debris.
Material, not size. The 6″ polyurethane is built on a heavier-duty hub and bearing assembly designed for 900 lb. The 8″ TPR uses a lighter-duty assembly with the rubber tread; capacity peaks at 600 lb. In larger collections, 8″ polyurethane casters can reach 1,500-2,000 lb, but those aren’t in this cart-specific subset.
The 4″ phenolic, 6″ polyurethane, and 8″ TPR products on this page all use the 4″ x 4-1/2″ top plate — the standard medium-heavy industrial mount. The 10″ semi-pneumatic uses its own larger plate. Verify your existing equipment plate before ordering.
Every wheel size in this collection ships with a brake variant available. Specify brake on at least one corner if the cart parks under load. A common 4-caster pattern is 2 swivel front + 2 rigid rear with brake on one of the rigid casters — the brake corner stays stationary while the cart maneuvers.
Yes — the semi-pneumatic tire works on concrete floors just fine. The trade-off is height. A 10″ wheel raises the cart deck by about 5″ vs. a 4″ wheel — that’s only acceptable if your equipment has the clearance. Outdoor applications justify the height; indoor applications usually don’t.
Photograph the existing caster mount with a tape measure for scale and email info@casterhq.com. We’ll verify wheel diameter, tread width, plate dimensions, and bolt pattern against the products on this page (or the broader CasterHQ catalog if your spec falls outside the cart-wheel subset). Cross-reference response within one business day.
