Polyurethane Caster Wheels with Iron Centers

Polyurethane is superior to rubber in resistance to grease, oil, cutting, chunking, and abrasive wear. These caster wheels can be used on almost any factory floor. As with moldon rubber, the bonding agent which holds the polyurethane tire ( tread ) to its iron center can be affected by exposure to some chemicals, impact, overloading, and the buildup of heat. Tire hardness is 90 to 95 Durometer, Shore A for wheels with prefix PY, PYR and PYC. Tire Hardness is 60 – 65 Durometer, Shore D for wheels with prefix PYH. Temperature range is -20° to 180° F. The principle benefit of a polyurethane wheel over the same size rubber wheel is increased capacity. Given the same size load on a smooth floor, a polyurethane caster wheel rolls easier than the same size conventional rubber caster wheel. However, when used at full capacity, polyurethane is not easy rolling. Given a manual operation under ideal conditions, polyurethane caster wheels have a safe operating capacity of up to three times the capacity of the same size rubber wheel. Capacity ratings are offered as an idea of what the wheel will carry without failure. They are not absolute, but rather depend on the usage and service.

Your conditions are almost never ideal, so select a caster wheel with much higher capacity than the weight you require. Polyurethane is not truly floor protective because it lacks the resilience and cushioning effect of soft rubber. However, polyurethane is less damaging to floors and cargo than “hard tread” wheels because it provides some tire deflection under load. Polyurethane caster wheels are not recommended for storage (standing) loads except for wheels with prefix PYH.

Looking for Vintage Style Black Polyurethane on Vintage Cast Iron Center Wheels?

Wheels with PY and PYR prefix are popular for most polyurethane wheel applications. Wheels with PYC prefix have a slight crown to the tire ( tread ) which enhances the ability of a swivel caster to change direction. Prefix PYH designates Extra Heavy Duty wheels. They have extra thick iron centers and tires. The 60 – 65 Durometer tires provide higher capacities for extra heavy duty applications.

Wheels with prefix PX have a Premium Polyurethane Tire molded to an iron center. They are our highest capacity polyurethane wheels with 1″ Thick, 95A Durometer tires. Premium Polyurethane Tires provide a lower rolling resistance at higher loads and buildup heat more slowly in a power-towed application. Do not use any polyurethane wheel in a constant rolling application.

Bearing Types shown in Table Below: R = Roller Bearing, T = Tappered Roller Bearings, PS = Precision Sealed Ball Bearings

Caster Chart

Caster wheels are standard with straight roller bearings and a spanner bushing. Other bearing and wheel sizes are available on request. We do NOT include mounting Hardware.

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
3 1/4″2″Flat95A2 7/16″600PY3.25X2R3/4″ R1/2″1 1/2

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
4″2″Flat95A2 7/16″700PY4X23/4″ R1/2″3
4″2″Flat95A2 7/16″700PYR4X23/4″ R1/2″3
4″2″Slight Crown95A2 7/16″800PYC4X23/4″ R1/2″4
4″2″Full Crown95A2 7/16″700PCI4X2PS1/2″ PSNA4

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
5″2″Flat95A2 7/16″1000PY5X23/4″ R1/2″4 1/4
5″2″Flat95A2 7/16″1000PYR5X23/4″ R1/2″4 1/4
5″2″Slight Crown95A2 7/16″1300PYC5X23/4″ R1/2″5
5″2″Full Crown95A2 7/16″800PCI5X2PS1/2″ PSN/A5

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
6″2″Flat95A2 7/16″1200PY6X23/4″ R1/2″5 1/2
6″2″Flat95A2 7/16″1200PYR6X23/4″ R1/2″5 1/2
6″2″Slight Crown95A2 7/16″1400PYC6X23/4″ R1/2″7
6″2″Full Crown95A2 7/16″900PCI6X2PS1/2″ PSN/A7
6″2 1/2″Flat95A2 3/4″1600PY6X2.50N1″ R3/4″10
6″2 1/2″Flat95A2 3/4″1600PYR6X2.50N1″ R3/4″10
6″2 1/2″Slight Crown95A3 1/4″1700PYC6X2.501″ R3/4″11
6″3″Flat95A3 1/4″2000PY6X31″ R3/4″10 1/2
6″3″Flat95A3 1/4″2000PYR6X31″ R3/4″10 1/2
6″3″Flat95A3 1/2″3600PX6X3-1T1″ TNA12
6″3″Flat95A3 1/2″3600PX6X3-.75T3/4″ TNA12
6″3″Flat60 – 65D3 1/4″3000PYH6X31″ R3/4″11
6″3″Flat60 – 65D3 1/2″3000PYH6X3-.75T3/4″ TN/A12
6″3″Flat60 – 65D3 1/2″3000PYH6X3-1T1″ TN/A12
6″3″Slight Crown95A3 1/4″2200PYC6X31″ R3/4″12

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
8″2″Slight Crown95A2 7/16″1500 PYC8X2PS 1/2″ PSYes10
8″2″Flat95A2 7/16″1500PY8X23/4″ R1/2″8
8″2″Flat95A2 7/16″1500PYR8X23/4″ R1/2″8
8″2″Slight Crown95A2 7/16″1500PYC8X23/4″ R1/2″10
8″2″Full Crown95A2 7/16″1000PCI8X2PS1/2″ PSN/A10
8″2 1/2″Flat95A2 3/4″1600PY8X2.50N1″ R3/4″12 1/2
8″2 1/2″Flat95A2 3/4″1600PYR8X2.50N1″ R3/4″12 1/2
8″2 1/2″Slight Crown95A3 1/4″2200PYC8X2.501″ R3/4″13
8″3″Flat95A3 1/4″2500PY8X31″ R3/4″14
8″3″Flat95A3 1/4″2500PYR8X31″ R3/4″14
8″3″Flat60 – 65D3 1/4″3500PYH8X31″ R3/4″16
8″3″Flat60 – 65D3 1/2″3500PYH8X3-.75T1″ RNA16
8″3″Flat60 – 65D3 1/2″3500PYH8X3-1T1″NA16
8″3″Flat95A3 1/2″5000PX8X3-1T1″ TNA16
8″3″Flat95A3 1/2″5000PX8X3-.75T3/4″ TNA16
8″3″Slight Crown95A3 1/4″2700PYC8X31″ R3/4″21
8″4″Flat60 – 65D4 1/2″4000PYH8X4-1.25T1 1/4″ TNA26
8″4″Flat60 – 65D4 1/4″4000PYH8X4-1.25RB1 1/4″R1″26
8″4″Flat60 – 65D4 1/4″4000PYH8X4-1.50RB1 1/2″R1 1/4″26
8″4″Flat95A4 1/2″5000PX8X4-1.25T1 1/4″ TNA29

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
10″2 1/2″Flat95A2 3/4″1600PY10X2.50N1″ R3/4″17
10″2 1/2″Flat95A2 3/4″1600PYR10X2.50N1″ R3/4″17
10″2 1/2″Slight Crown95A3 1/4″2400PYC10X2.501″ R3/4″17
10″3″Flat95A3 1/4″3000PY10X31″ R3/4″21 1/2
10″3″Flat95A3 1/4″3000PYR10X31″ R3/4″21 1/2
10″3″Flat60 – 65D3 1/4″4000PYH10X31″ R3/4″23
10″3″Flat60 – 65D3 1/2″4000PYH10X3-.75T3/4″ TN/A23
10″3″Flat60 – 65D3 1/2″4000PYH10X3-1T1″ TN/A23
10″3″Flat95A3 1/2″4700PX10X3-1T1″ TN/A23
10″3″Flat95A3 1/2″4700PX10X3-.75T3/4″ TN/A23
10″3″Slight Crown95A3 1/4″3000PYC10X31″ R3/4″21
10″4″Flat60 – 65D4 1/2″5500PYH10X4-1.25T1 1/4″N/A34
10″4″Flat60 – 65D4 1/4″5500PYH10X4-1.25RB1 1/4″ R1″34
10″4″Flat60 – 65D4 1/4″5500PYH10X4-1.50RB1 1/2″ R1 1/4″34
10″4″Flat95A4 1/2″6000PX10X4-1.25T1 1/4″ TN/A36

WHEEL DIAM.TREAD WIDTHFaceDurometerHub LengthCapacity Lbs.Wheel ONLY Part NumberBearing I.D. / TypeI.D. with SpannerApprox. Wt.
12″3″Flat95A3 1/4″3500PY12X31″ R3/4″22
12″3″Flat95A3 1/4″3500PYR12X31″ R3/4″22
12″3″Flat60 – 65D3 1/4″5000PYH12X31″ R3/4″28
12″3″Flat60 – 65D3 1/2″5000PYH12X3-.75T3/4″ T3/4″28
12″3″Flat60 – 65D3 1/2″5000PYH12X3-1T1″ T1″28
12″3″Flat95A3 1/4″6000PX12X3-.75B3/4″ BN/A32
12″3″Slight Crown95A3 1/4″3500PYC12X31″ R3/4″34
12″4″Flat60 – 65D4 1/2″6500PYH12X4-1.25T1 1/4″ TN/A41
12″4″Flat60 – 65D4 1/4″6500PYH12X4-1.25RB1 1/4″ R1″41
12″4″Flat60 – 65D4 1/4″6500PYH12X4-1.50RB1 1/2″ R1 1/4″41
12″4″FlatN/AN/A7000PX12X4-1.25T1 1/4″ TN/A44

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Application Use for Polyurethane on Iron Caster Wheels

  • Manufacturing
    • Moving heavy machinery on factory floors
    • Assembly line carts for parts transport
    • Dollies for raw material handling
    • Towline systems for continuous production
    • Tool carts for maintenance and repair
    • Conveyor system supports
    • Work-in-progress (WIP) racks
    • Storage racks for components
    • Industrial shelving units
    • Robotic assembly line platforms
  • Warehousing and Logistics
    • Pallet jacks for goods transport
    • Warehouse carts for order picking
    • Storage rack mobility
    • Shipping and receiving dock equipment
    • Inventory management carts
    • Distribution center shelving units
    • Forklift attachments for specialized loads
    • Hand trucks for heavy packages
    • Mobile platforms for cross-docking
    • Trolleys for inter-warehouse transport
  • Aerospace
    • Transporting aircraft wings and fuselages
    • Ground support equipment (GSE) mobility
    • Moving rocket modules and satellite components
    • Assembly line fixtures for aircraft parts
    • Maintenance carts for tools and equipment
    • Mobile work platforms for aircraft assembly
    • Transport carts for jet engines
    • Aerospace tooling racks
    • Mobile test equipment stands
    • Hangar equipment carts
  • Pharmaceuticals
    • Clean room equipment mobility
    • Laboratory carts for sensitive instruments
    • Transporting pharmaceutical processing equipment
    • Mobile storage for sterile supplies
    • Moving autoclaves and sterilization units
    • Carts for raw material transport in drug manufacturing
    • Mobile workstations in research labs
    • Stainless steel carts for GMP compliance
    • Mobile packaging equipment
    • Transport of controlled substances in secure carts
  • Automotive
    • Assembly line carts for car parts
    • Transporting engines and transmissions
    • Mobile workstations for vehicle assembly
    • Parts racks for automotive components
    • Service equipment carts in repair shops
    • Moving chassis during production
    • Tire storage and transport racks
    • Mobile paint booths
    • Tool carts for automotive maintenance
    • Mobile diagnostic equipment stands
  • Food Service
    • Kitchen carts for food prep equipment
    • Mobile food processing equipment
    • Bakery racks for dough transport
    • Beverage carts in restaurants
    • Catering equipment mobility
    • Mobile refrigeration unit bases
    • Transport carts for bulk ingredients
    • Dishwashing equipment carts
    • Mobile serving stations
    • Storage racks for kitchen supplies
  • Healthcare
    • Hospital beds and stretchers
    • Medical equipment carts (e.g., ultrasound machines)
    • Mobile surgical supply carts
    • Patient transport wheelchairs
    • Pharmacy carts for medication delivery
    • Mobile diagnostic imaging equipment
    • Laundry carts for linens
    • Mobile oxygen tank holders
    • Emergency response carts
    • Medical waste transport carts
  • Retail
    • Display racks for merchandise
    • Shopping carts in stores
    • Mobile store fixtures
    • Stocking carts for inventory replenishment
    • Mobile point-of-sale (POS) systems
    • Transport carts for seasonal displays
    • Mobile signage stands
    • Retail shelving unit mobility
    • Mobile fitting room bases
    • Jewelry display case carts
  • Construction
    • Material transport carts on job sites
    • Mobile scaffolding bases
    • Tool carts for construction equipment
    • Moving concrete mixers
    • Transporting steel beams and lumber
    • Mobile generator bases
    • Mobile compressor units
    • Pipe and conduit transport racks
    • Mobile ladders and platforms
    • Debris removal carts
  • Military
    • Transporting defense equipment
    • Mobile ammunition carts
    • Logistics carts for supply chains
    • Moving radar and communication equipment
    • Mobile weapon storage racks
    • Transporting field hospital equipment
    • Mobile maintenance platforms
    • Moving armored vehicle components
    • Mobile fuel tank bases
    • Transport carts for missile components
  • Marine and Leisure Vehicles
    • Moving boat molds in manufacturing
    • Transporting recreational vehicle (RV) parts
    • Mobile yacht assembly fixtures
    • Carts for marine engine transport
    • Mobile storage for boat components
    • Moving trailers during production
    • Transport racks for watercraft parts
    • Mobile work platforms for marine assembly
    • Carts for sailboat rigging
    • Moving personal watercraft (e.g., jet skis)
  • Entertainment
    • Stage equipment carts for theater productions
    • Lighting rig transport carts
    • Camera dollies for film production
    • Mobile sound equipment bases
    • Moving props and set pieces
    • Mobile projector stands
    • Transport carts for event seating
    • Mobile broadcast equipment
    • Moving stage platforms
    • Carts for musical instrument transport
  • Agriculture
    • Farm equipment carts
    • Greenhouse carts for plant transport
    • Mobile irrigation system bases
    • Moving harvested crops
    • Transporting fertilizer and seed bags
    • Mobile livestock feed carts
    • Moving agricultural tools
    • Mobile water tank bases
    • Transport racks for fencing materials
    • Carts for orchard and vineyard maintenance
  • Mining
    • Moving heavy machinery in mines
    • Transporting ore and minerals
    • Mobile drilling equipment bases
    • Carts for mining tools
    • Moving conveyor system components
    • Transport racks for explosives
    • Mobile ventilation system bases
    • Moving water pumps
    • Carts for geological survey equipment
    • Mobile storage for mining supplies
  • Oil and Gas
    • Moving refinery equipment
    • Transporting drilling rig components
    • Mobile pipeline inspection tools
    • Carts for oilfield tools
    • Moving chemical storage drums
    • Mobile compressor bases
    • Transport racks for piping
    • Mobile safety equipment carts
    • Moving fuel tanks
    • Carts for maintenance tools
  • Telecommunications
    • Moving server racks in data centers
    • Mobile cable installation carts
    • Transporting network equipment
    • Mobile antenna bases
    • Carts for telecom tool storage
    • Moving satellite dish components
    • Mobile power supply units
    • Transport racks for wiring
    • Mobile testing equipment stands
    • Carts for data center maintenance
  • Education
    • Moving classroom furniture
    • Mobile laboratory equipment in schools
    • Transporting library book carts
    • Mobile AV equipment for presentations
    • Moving gym equipment
    • Carts for art supplies
    • Mobile science lab workstations
    • Transporting musical instruments
    • Moving cafeteria tables
    • Carts for maintenance tools
  • Hospitality
    • Luggage carts in hotels
    • Housekeeping carts for cleaning supplies
    • Mobile banquet tables
    • Moving room service carts
    • Transporting laundry in hotels
    • Mobile bar carts
    • Carts for event decorations
    • Moving conference room furniture
    • Mobile spa equipment
    • Transport racks for linens
  • Additional Niche Applications
    • Moving vintage machinery in museums
    • Mobile display bases for art galleries
    • Transporting heavy props in theme parks
    • Moving fitness equipment in gyms
    • Carts for textile manufacturing
    • Mobile bases for 3D printers in prototyping
    • Moving heavy sculptures in studios
    • Transporting large aquariums in zoos
    • Mobile bases for vending machines
    • Moving heavy-duty appliances in commercial laundries

Need Help with your order?
(800) 501-3808

You should never select on the basis of load capacity alone. There is no industry standard for load capacity ratings and they may not include a factor for abuse. Our capacity ratings are below what the casters are capable of carrying because most applications have less than perfect conditions. Please refer to the information shown at the bottom of this page. If you have any doubt as to which wheel or caster is the BEST choice for your application contact us for a recommendation.

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