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Gray Rubber Caster Wheels 

These caster wheels have gray non-marking injection molded thermoplastic rubber tires mechanically bonded to a polyolefin ( industrial plastic ) center. They are popular on equipment in Pharmaceutical Laboratories, Hospitals, Food Service and other Institutional applications. These caster wheels provide a softer ride than polyurethane and yet withstand exposure to many chemicals and solvents. They can be used in industrial applications which do not involve shock, overloading, abuse, obstructions, poor floors or storage (standing) loads. Wheels with RH prefix have a slightly higher capacity than our other gray soft rubber wheels.

Soft rubber provides more desirable operating characteristics than any other wheel material. These gray soft rubber wheels are non-marking, quiet, absorb shock (prolonging equipment life and protecting cargo), can roll over small objects, protects costly floor surfaces, and minimizes vibration. They fall short of perfection in their limitation under load – they do not roll easily. Load capacity ratings do not take into account the effort required to manually move a load (drawbar pull measured in pounds). If cargo is to be moved manually on these gray soft rubber caster wheels, reduce capacity ratings by 50% and select the largest practical wheel diameter. These caster wheels should not be left standing under load for extended periods as the tires may take a permanent “set” or develop flat spots. They can be used on almost any dry factory floor. The bonding agent which holds the rubber tire to its polyolefin center can be affected by exposure to some chemicals, impact, overloading, and the buildup of heat.

R = Roller Bearing, D = Delrin Bearings, P = Plain Bore, BB = Ball Bearings, PS = Precision Sealed Ball Bearings, SPS = Stainless Precision Sealed Ball Bearings

img Wheels with RF & RD prefix are 75A ± 5 Durometer.
img Wheels with RH & RQ prefix are 65A ± 5 Durometer.

Wheels Chart (Click the Part Number to Order)

We do NOT include mounting Hardware.rn

WHEEL DLAM. TREAD WIDTH Hub Length Capacity Lbs. Wheel ONLY Part Number Bearing I.D. / Type I.D. with Spanner Approx. Wt.
3″ 1 1/4″ 1 9/16″ 150 RF3X1.25PS | Soft Gray Rubber 3/8″ PS N/A 1/2
3″ 1 1/4″ 1 5/8″ 200 RH3X1.25B | High Capacity Soft Gray Rubber 3/8″ B N/A 1/2
3 1/2″ 1 1/4″ 1 9/16″ 225 RH35X1.25B | High Capacity Soft Gray Rubber 3/8″ B N/A 1/2
WHEEL DLAM. TREAD WIDTH Hub Length Capacity Lbs. Wheel ONLY Part Number Bearing I.D. / Type I.D. with Spanner Approx. Wt.
4″ 1 1/4″ 1 9/16″ 200 RF4X1.25PS | Soft Gray Rubber 3/8″ PS N/A 5/8
4″ 1 1/4″ 1 9/16″ 200 RQ4X1.25B | Ultra Soft Gray Rubber 3/8″ B N/A 5/8
4″ 1 1/4″ 1 5/8″ 250 RH4X1.25B | High Capacity Soft Gray Rubber 3/8″ B N/A 5/8
4″ 2″ 2 7/16″ 250 RF4X2R | Soft Gray Rubber (Roller) 3/4″ R 1/2″ 1 1/2
4″ 2″ 2 7/16″ 250 RF4X2PS | Soft Gray Rubber (Sealed Ball) 1/2″ PS 1/2″ 1 1/2
4″ 2″ 2 7/16″ 250 RF4X2D | Soft Gray Rubber (Delrin) 3/4″ D 1/2″ 1 1/2
4″ 2″ 2 7/16″ 300 RH4X2B | High Capacity Soft Gray Rubber 1/2″ B N/A 1 1/2
WHEEL DLAM. TREAD WIDTH Hub Length Capacity Lbs. Wheel ONLY Part Number Bearing I.D. / Type I.D. with Spanner Approx. Wt.
5″ 1 1/4″ 1 9/16″ 200 RQ5X1.25B | Ultra Soft Gray Rubber 3/8″ B N/A 1
5″ 1 1/4″ 1 9/16″ 250 RF5X1.25PS | Soft Gray Rubber 3/8″ PS N/A 3/4
5″ 1 1/4″ 1 9/16″ 250 RD5X1.25PS | Crown Tread Gray Soft Rubber 3/8″ PS N/A 1
5″ 1 1/4″ 1 5/8″ 300 RH5X1.25B | High Capacity Soft Gray Rubber 3/8″ B N/A 1
5″ 2″ 2 7/16″ 300 RF5X2R | Soft Gray Rubber (Roller) 3/4″ R 1/2″ 1 3/4
5″ 2″ 2 7/16″ 300 RF5X2PS | Soft Gray Rubber (Sealed Ball) 1/2″ PS N/A 1 3/4
5″ 2″ 2 7/16″ 300 RF5X2D | Soft Gray Rubber (Delrin) 3/4″ D 1/2″ 1 3/4
5″ 2″ 2 7/16″ 350 RH5X2B | High Capacity Soft Gray Rubber 1/2″ B N/A 1 3/4
WHEEL DLAM. TREAD WIDTH Hub Length Capacity Lbs. Wheel ONLY Part Number Bearing I.D. / Type I.D. with Spanner Approx. Wt.
6″ 2″ 2 7/16″ 350 RD6X2R | Crown Tread Soft Gray Rubber (Roller) 3/4″ R 1/2″ 2
6″ 2″ 2 7/16″ 400 RF6X2R | Soft Gray Rubber (Roller) 3/4″ R 1/2″ 2
6″ 2″ 2 7/16″ 400 RF6X2PS | Soft Gray Rubber (Sealed Ball) 1/2″ PS N/A 2
6″ 2″ 2 7/16″ 400 RF6X2D | Soft Gray Rubber (Delrin) 3/4″ D 1/2″ 2
6″ 2″ 2 7/16″ 400 RH6X2B | High Capacity Soft Gray Rubber 1/2″ B N/A 2
WHEEL DLAM. TREAD WIDTH Hub Length Capacity Lbs. Wheel ONLY Part Number Bearing I.D. / Type I.D. with Spanner Approx. Wt.
8″ 2″ 2 7/16″ 450 RD8X2R | Crown Tread Soft Gray Rubber (Roller) 3/4″ R 1/2″ 2 1/2
8″ 2″ 2 7/16″ 450 RD8X2PS | Crown Tread Soft Gray Rubber (Sealed Ball) 1/2″PS N/A 2 1/2
8″ 2″ 2 7/16″ 500 RF8X2R | Soft Gray Rubber (Roller) 1/2″ PS N/A 2 1/2
8″ 2″ 2 7/16″ 500 RF8X2PS | Soft Gray Rubber (Sealed Ball) 1/2″ PS N/A 2 1/2
8″ 2″ 2 7/16″ 500 RF8X2D | Soft Gray Rubber (Delrin) 3/4″ D 1/2″ 2 1/2
8″ 2″ 2 7/16″ 550 RH8X2B | High Capacity Soft Gray Rubber 1/2″ B N/A 2 1/2

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 theyrnmay not include a factor for abuse. Our capacity ratings are below what the casters are capable of carrying because mostrnapplications have less than perfect conditions. Please refer to the information shown at the bottom of this page. If you have anyrndoubt as to which wheel or caster is the BEST choice for your application contact us for a recommendation