Polyurethane on polyolefin wheels bond a polyurethane tread to a polyolefin (high-density plastic) core — the lightest polyurethane wheel construction in our catalog. Best for light-duty applications (125–1,000 lb per wheel) where weight matters and chemical resistance is critical. Polyolefin core won't corrode in any chemical environment. Browse wheel sizes below then build a complete caster using our polyurethane caster yokes.
Polyolefin core is 50% lighter than aluminum and 70% lighter than iron at the same wheel size — the lightest construction we stock. Trade-off is reduced load capacity and softer ride. Best for: medical equipment, mobile retail fixtures, food service trolleys, hospitality carts, and any application where total cart weight or quiet rolling matter more than max capacity. Cheaper than aluminum-core; comparable price to solid poly.
Pick a polyurethane caster yoke style: plate casters for institutional bolt-on, swivel casters, grip ring stem for office and institutional. Most poly-on-polyolefin wheels go into light-duty plate casters or office furniture configurations.
Polyolefin handles its rated load (up to 1,000 lb per wheel on the 8-inch sizes) without compression set or fatigue. Below rated load, expect 5+ year service life. Above rated load, the core can deform permanently — spec at 70% of rating for continuous heavy use, or upgrade to solid poly or aluminum for higher loads.
How long do poly-on-polyolefin wheels last? 3-5 years at 70% rated load on smooth floors. Polyolefin core wears slowly under typical commercial use.
Build a complete caster with these wheels? Yes — see /polyurethane-plate-casters or other configurations.
FDA-compliant for food service? Yes — polyolefin core is inherently food-safe; FDA-compliant tread formulations available.
Cost vs solid polyurethane? Comparable — typically 5-15% cheaper than solid poly at the same wheel size.
Will the wheel hold up to UV? Polyurethane tread is UV-resistant; polyolefin core handles UV well. Good for short-term outdoor use.
Apply this rule when sizing the caster that will use this wheel type. Divide total cart weight by 3 (not 4) because uneven floors cause one caster to temporarily lift, redistributing load to the remaining three. Multiply by 1.25 for dynamic impact (rolling onto floor seams, dock plates). Pick the wheel core type whose load range covers your per-caster requirement.
| Wheel Core | Load/Wheel | Weight | Floor Protection | Best Use |
|---|---|---|---|---|
| Polyurethane on Iron | 700–8,000 lb | Heaviest | Excellent | Heavy industrial, tow lines |
| Polyurethane on Aluminum | 250–1,500 lb | Light | Excellent | Aerospace, weight-sensitive |
| Solid Polyurethane | 300–1,000 lb | Medium | Excellent | General industrial, mid-load |
| Polyurethane on Polyolefin Most Popular | 125–1,000 lb | Lightest | Excellent | Light-duty, chemical resistance |
Replaced 600 hotel service cart casters with poly-on-polyolefin wheel + grip ring caster combos from CasterHQ. Cart weight dropped 8 lb each — staff noticed immediately on push-effort surveys. Two years in, zero wheel core failures across 18 properties.
Application engineers on staff · ISO-certified facility · 50,000+ businesses served · 100+ combined years in caster design
