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.

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
IS THIS THE RIGHT WHEEL FOR YOUR APPLICATION?? CLICK TO COMPARE WITH OTHER WHEELS.


6" x 2" Green Poly on Iron
PY6x2
6" x 2" Green Poly on Iron
PY6x2
8" x 2" Green Poly on Iron
PY8x2
6" x 3" Green Poly on Iron
PY6x3
8" x 3" Extra Heavy Duty
Poly on Iron
PYH8x3

8" x 3" Crowned Tread
Poly on Iron
PYC8x3

6" x 2" Red Poly on Iron
PYR6x2
6" x 2" Crown Tread
Poly on Iron
PCI6x2
4" x 2" Crown Tread
Poly on Iron
PCI4x2
6" x 3" Extra Heavy Duty
Poly on Iron
PX6x3
We do NOT include mounting Hardware.
Click on the Part Numbers for Pricing, Options and to ORDER.
WHEELS ONLY
Wheel
Diam.		 Tread Durometer
Hub
Length
Capacity
Lbs.
Click Part Numbers Below
For Price and to Order

Bearing
I.D. / Type		 I.D. with
Spanner		 Approx.
Wt.
Width Face Wheel ONLY
Part Number
3 1/4" 2" Flat 95A 2 7/16" 600 PY3.25x2R 3/4" R 1/2" 1 1/2
4" 2" Flat 95A 2 7/16" 700 PY4x2 3/4" R 1/2" 3
PYR4x2 3/4" R 1/2" 3
Slight Crown 95A 2 7/16" 800 PYC4x2 3/4" R 1/2" 4
Full Crown 95A 2 7/16" 700 PCI4x2PS 1/2" PS NA 4
5" 2" Flat 95A 2 7/16" 1000 PY5x2 3/4" R 1/2" 4 1/4
PYR5x2 3/4" R 1/2" 4 1/4
Slight Crown 95A 2 7/16" 1300 PYC5x2 3/4" R 1/2" 5
Full Crown 95A 2 7/16" 800 PCI5x2PS 1/2" PS NA 5
6" 2" Flat 95A 2 7/16" 1200 PY6x2 3/4" R 1/2" 5 1/2
PYR6x2 3/4" R 1/2" 5 1/2
Slight Crown 95A 2 7/16" 1400 PYC6x2 3/4" R 1/2" 7
Full Crown 95A 2 7/16" 900 PCI6x2PS 1/2" PS N/A 7
2 1/2" Flat 95A 2 3/4" 1600 PY6x2.50N 1" R 3/4" 10
PYR6x2.50N 1" R 3/4" 10
Slight Crown 95A 3 1/4" 1700 PYC6x2.50 1" R 3/4" 11
3" Flat 95A 3 1/4" 2000 PY6x3 1" R 3/4" 10 1/2
PYR6x3 1" R 3/4" 10 1/2
3 1/2" 3600 PX6x3-1T 1" T NA 12
PX6x3-.75T 3/4" T
60 - 65D 3 1/4" 3000 PYH6x3 1" R 3/4" 11
3 1/2" 3000 PYH6x3-.75T 3/4" T N/A 12
PYH6x3-1T 1" T N/A 12
Slight Crown 95A 3 1/4" 2200 PYC6x3 1" R 3/4" 12
8" 2" Flat 95A 2 7/16" 1500 PY8x2 3/4" R 1/2" 8
PYR8x2 3/4" R 1/2" 8
Slight Crown 95A 2 7/16" 1500 PYC8x2 3/4" R 1/2" 10
Full Crown 95A 2 7/16"" 1000 PCI8x2PS 1/2" PS N/A 10
2 1/2" Flat 95A 2 3/4" 1600 PY8x2.50N 1" R 3/4" 12 1/2
PYR8x2.50N 1" R 3/4" 12 1/2
Slight Crown 95A 3 1/4" 2200 PYC8x2.50 1" R 3/4" 13
3" Flat 95A 3 1/4" 2500 PY8x3 1" R 3/4" 14
PYR8x3 1" R 3/4" 14
60 - 65D 3 1/4" 3500 PYH8x3 1" R 3/4" 16
3 1/2" 3500 PYH8x3-.75T 3/4" T NA 16
PYH8x3-1T 1" T 16
95A 3 1/2" 4200 PX8x3-1T 1" T NA 16
PX8x3-.75T 3/4" T 16
Slight Crown 95A 3 1/4" 2700 PYC8x3 1" R 3/4" 21
4" Flat 60 - 65D 4 1/2" 4000 PYH8x4-1.25T 1 1/4" T N/A 26
4 1/4" 4000 PYH8x4-1.25RB 1 1/4" R 1"
PYH8x4-1.50RB 1 1/2" R 1 1/4"
95A 4 1/2" 5000 PX8x4-1.25T 1 1/4" T N/A 29
10" 2 1/2" Flat 95A 2 3/4" 1600 PY10x2.50N 1" R 3/4" 17
PYR10x2.50N 1" R 3/4" 17
Slight Crown 95A 3 1/4" 2400 PYC10x2.50 1" R 3/4" 17
3" Flat 95A 3 1/4" 3000 PY10x3 1" R 3/4" 21 1/2
PYR10x3 1" R 3/4" 21 1/2
60 - 65D 3 1/4" 4000 PYH10x3 1" R 3/4" 23
3 1/2" 4000 PYH10x3-.75T 3/4" T N/A 23
PYH10x3-1T 1" T
95A 3 1/2" 4700 PX10x3-1T 1" T N/A 23
PX10x3-.75T 3/4" T
Slight Crown 95A 3 1/4" 3000 PYC10x3 1" R 3/4" 21
4" Flat 60 - 65D 4 1/2" 5500 PYH10x4-1.25T 1 1/4" T N/A 34
4 1/4" 5500 PYH10x4-1.25RB 1 1/4" R 1"
PYH10x4-1.50RB 1 1/2" R 1 1/4"
95A 4 1/2" 6000 PX10x4-1.25T 1 1/4" T N/A 36
12" 3" Flat 95A 3 1/4" 3500 PY12x3 1" R 3/4" 22
PYR12x3 1" R 3/4" 22
60 - 65D 3 1/4" 5000 PYH12x3 1" R 3/4" 28
3 1/2" PYH12x3-.75T 3/4" T 3/4" 28
PYH12x3-1T 1" T 1" 28
Slight Crown 95AN/A 3 1/4" 3500 PYC12x3 1" R 3/4" 34
4" Flat 60 - 65D 4 1/2" 6500 PYH12x4-1.25T 1 1/4" T N/A 41
4 1/4" 6500 PYH12x4-1.25RB 1 1/4" R 1"
PYH12x4-1.50RB 1 1/2" R 1 1/4"
N/A 7000 PX12x4-1.25T 1 1/4" T N/A 44

Caster wheels are standard with straight roller bearings and a spanner bushing. Other bearing and wheel sizes are available on request.
You should never select on the basis of load capacity alone. Capacity ratings do not take into account the effort required to manually move a load. Capacity ratings are based on manual operation under ideal conditions. If these wheels are going to be moved by mechanically powered equipment, consult us for a reduced capacity rating based on your application.
Photos & graphics are for informational purposes only. Actual product may vary slightly from those shown.
Wheel colors may vary unless specified. If wheel color is important, please contact us for current inventory.