Pricing Table 

Part #
Wheel Size (Diameter x Tread Width), Wheel Material, Bearings, Color
Overall Height
Price Each
27UX40JO6317YY Swivel 4” x 2” RoundTread Poly on Al. w/ Precision Ball Bearings; Orange 900# 5-5/8” $36.00
28UX40JO6317YY Rigid 4” x 2” Round Tread Poly on Al. w/ Precision Ball Bearings; Orange 900# 5-5/8” $37.00
27UX50JO6417YY Swivel 5” x 2” Round Tread Poly on Al. w/ Prec. Ball Bearings; Orange 900# 6 -1/2” $45.00
28UX50JO6417YY Rigid 5” x 2” Round Tread  Poly on Al. w/ Prec. Ball Bearings; Orange 900# 6 -1/2” $44.00
27UX61JO6317YY Swivel 6” x 2” Round Tread Poly on Al. w/ Prec. Ball Bearings; Orange 1,000# 7 -1/2” $52.00
28UX61JO6317YY Rigid 6” x 2” Round Tread Poly on Al. w/ Prec, Ball Bearings; Orange 1,000# 7 -1/2” $51.00
27UX80JO6317YY Swivel 8” x 2” Round Tread Poly on Al. w/ Prec. Ball Bearings; Orange 1,200# 9 -1/2” $66.00
28UX80JO6317YY Rigid 8” x 2” Round Tread Poly on Al. w/ Prec. Ball Bearings ; Orange 1,200# 9 -1/2” $65.00

Our ERGO Round Tread Poly Casters are engineered to maximize mobility and ease of use under heavy loads. These casters are perfect for applications requiring frequent movements with minimal effort. The round tread design and polyurethane material ensure smooth, quiet operation across a variety of floor types.


  • Ergonomic Design: The round tread minimizes friction and rolling resistance, making it easier to maneuver equipment without excessive strain.
  • Material Benefits: Constructed from high-quality polyurethane, these wheels offer excellent floor protection, resist wear and tear, and provide a quiet operation.
  • Load Capacity: Suitable for a range of weights, with individual caster options designed to support from 200 to 2,500 pounds.
  • Versatility: Ideal for use in hospitals, libraries, schools, and other settings where noise reduction and floor protection are crucial.
  • Compatibility: Available in various sizes and fittings to ensure they meet the specific requirements of your equipment.


  • Reduced Operator Fatigue: The ergonomic design helps in reducing the effort needed to move heavy loads, thus decreasing operator fatigue.
  • Floor Safety: Soft polyurethane wheels are non-marking and prevent scratches or marks on your floors, preserving their condition and appearance.
  • Durability: Polyurethane is resistant to many chemicals, solvents, and oils, extending the lifespan of the casters under various environmental conditions.
  • Smooth Operation: The round tread design allows for optimal rolling ease and maneuverability, even under heavy loads.


  • Wheel Diameter: Options range from 4” to 8”
  • Wheel Width: Standard widths are 2”
  • Mounting Types: Swivel, rigid, and brake options available
  • Finish: Various finishes including zinc, stainless steel, and custom colors for specific aesthetic needs


We recognize that every application has unique requirements. Our team is equipped to provide custom solutions, including varied wheel sizes, load capacities, and mounting features tailored to your specific needs.

One of our most popular medium duty to heavy duty caster right now is our Round Tread Polyurethane on aluminum core swivel and rigid casters.  These casters have large precision ball bearings in the wheel to allow for easy rolling and easy turning for carts and buggies.  This is truly an ergonomic caster with extra benefits.  Great for material handling carts, buggies, commercial and warehouse applications.  These casters are designed for the best ergonomic push / pull effort required to move the carts or buggies.

900 – 1,200 lbs. capacity

available in 4″ x 2″, 5″ x 2″, 6″ x 2″ and 8″ x 2″ size wheels.

Non marking polyurethane wheels.  -50 degrees to 180 degrees F temperature range

High load capacity with quiet rolling capability.  Available with straight roller bearings for precision ball bearings.

80 Shore A Durometer Polyurethane tread chemically bonded to cast iron core.

Round tread allows the casters to roll and swivel easier than a flat tread wheel making these very ergonomic.

5/8” bolt and nut kingpin construction of swivel casters

Bright zinc finish with double ball raceway in swivel casters.

Grease fittings in the swivel race and wheel and axles.

Contact Us

Our knowledgeable team is ready to assist you in selecting the perfect ERGO Round Tread Poly Casters for your application. Reach out today for expert advice, a detailed quote, or to discuss your customization needs.