W/ RED POLY ON IRON WHEELS

Red Polyurethane on Iron Casters (Swivel & Rigid)

Heavy-duty polyurethane-on-iron caster wheels built for high-cycle cart and equipment movement where you want capacity + floor protection without the harshness of all-metal wheels. Commonly specified for manufacturing, MRO fleets, and commercial carts.

Typical wheel sizes: 4"–8". Typical capacities: up to ~1,250 lb/caster (model dependent).

Procurement-ready summary (model dependent)

Wheel construction

Polyurethane tread bonded to iron core

Primary benefit

High load capacity with improved floor protection vs. steel/iron tread

Typical durometer

~95A (varies by wheel)

Use environments

Indoor/outdoor; iron core can surface-rust in wet service

Best floors

Sealed concrete, epoxy, tile, smooth shop floors

Typical applications

Carts, racks, fixtures, fabrication shops, plant maintenance

Engineering notes: why polyurethane on iron

Capacity: iron core carries load; polyurethane provides a resilient tread layer.
Floor protection: reduces point loading and surface marring vs. steel tread.
Noise/vibration: quieter than metal wheels; still firmer than rubber/TPR.
Push force: generally lower than soft rubber under heavy load, especially on smooth floors.

Selection guidance for engineers & buyers

Swivel vs rigid: use rigid casters for tracking stability; use swivels for maneuvering; common builds are 2 swivel + 2 rigid.
Wheel diameter: larger diameters reduce rolling resistance and handle joints/debris better.
Bearings: ball/roller options change start-up effort and heat under continuous duty (choose per load + duty cycle).
Floor condition: rough concrete increases tread wear—consider harder compounds or larger diameter if abuse is high.

Specify another wheel material when…

Need maximum floor protection / quiet roll → consider Rubber or Soft TPR/TPE.
Need low cost + high capacity on smooth floors → consider Phenolic.
Need extreme temperature / harsh abrasion → consider Steel or other metal wheels.