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Capacity up to 300 pounds per caster. Stainless steel casters are ideal for use in a wet or corrosive environment. Economy model lacks grease fitting in swivel bearing or a dust cover to enable water to completely drain out of the swivel bearing.
Top Plate Size: 3 1/8″ x 4 1/8″ Bolt Hole Spacing: 2 3/8″ x 3 3/8″; Slotted to 1 3/4″ x 2 15/16″ Mounting Bolt Size: 3/8″Desktop: When you put your mouse over the words in the wheel description column you see a picture of the wheel. Click on the part number in the Swivel and Rigid columns to see the complete caster.
Mobile: Hold down your finger on the chart and scroll to the right to click on the part number you would like to order.
| CASTER WHEEL DIAM. | TREAD WIDTH | WHEEL TREAD MATERIAL Click below for Replacement Wheels | STD BRG TYPE | MAX CAP. EACH CASTER LBS. | SWIVEL CASTER Part Number | RIGID CASTER Part Number | APPROX SWIVEL WEIGHT (LBS) | APPROX SWIVEL RADIUS | OVERALL HEIGHT |
|---|---|---|---|---|---|---|---|---|---|
| 3″ | 1 1/4″ | Gray Soft Rubber |
PS | 225 | SS-K3RF3X1.25S | SS-K3RF3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | High Capacity Soft Gray Rubber |
BB | 300 | SS-K3RH3X1.25S | SS-K3RH3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Blue High Capacity Soft Rubber |
D | 300 | SS-K3RHB3X1.25S | SS-K3RHB3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Gray Polyurethane |
PS | 200 | SS-K3GP3X1.25S | SS-K3GP3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Black/Gray Polyurethane |
PS | 200 | SS-K3BK3X1.25S | SS-K3BK3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Blue/Gray Polyurethane |
PS | 200 | SS-K3BP3X1.25S | SS-K3BP3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Red/Gray Polyurethane |
PS | 200 | SS-K3RG3X1.25S | SS-K3RG3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | All Polyurethane |
D | 300 | SS-K3AP3X1.25S | SS-K3AP3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Phenolic |
P | 300 | SS-K3TM3X1.25S | SS-K3TM3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Polyolefin – Black |
P | 300 | SS-K3PB3X1.25S | SS-K3PB3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Polyolefin – White |
P | 300 | SS-K3PW3X1.25S | SS-K3PW3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | High Temp Moist Heat – Fiberglass-Nylon |
P | 250 | SS-K3NP3X1.25S | SS-K3NP3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | High Temp Fiberglass  |
P | 300 | SS-K3TP3X1.25S | SS-K3TP3X1.25R | 1 3/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Heavy Duty All Polyurethane  |
SSPSBB | 350 | SS-K3APH3X1.25S | SS-K3APH3X1.25R | 1 1/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | Nylon  |
SSPSBB | 350 | SS-K3NY3X1.25SPSS | SS-K3NY3X1.25SPSR | 1 1/4 | 2 7/8″ | 4 1/8″ |
| 3″ | 1 1/4″ | High Temp Moist Heat Polymer Retort  |
P | 325 | SS-K3RT3X1.25S | SS-K3RT3X1.25S | 1 1/4 | 2 7/8″ | 4 1/8″ |
| CASTER WHEEL DIAM. | TREAD WIDTH | WHEEL TREAD MATERIAL Click below for Replacement Wheels | STD BRG TYPE | MAX CAP. EACH CASTER LBS. | SWIVEL CASTER Part Number | RIGID CASTER Part Number | APPROX SWIVEL WEIGHT (LBS) | APPROX SWIVEL RADIUS | OVERALL HEIGHT |
|---|---|---|---|---|---|---|---|---|---|
| 4″ | 1 1/4″ | Gray Soft Rubber |
PS | 275 | SS-K3RF4X1.25S | SS-K3RF4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | High Capacity Soft Gray Rubber |
BB | 350 | SS-K3RH4X1.25S | SS-K3RH4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Blue High Capacity Soft Rubber |
D | 300 | SS-K3RHB4X1.25S | SS-K3RHB4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Gray Polyurethane |
PS | 250 | SS-K3GP4X1.25S | SS-K3GP4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Black/Gray Polyurethane |
PS | 250 | SS-K3BK4X1.25S | SS-K3BK4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Blue/Gray Polyurethane |
PS | 250 | SS-K3BP4X1.25S | SS-K3BP4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Red/Gray Polyurethane |
PS | 250 | SS-K3RG4X1.25S | SS-K3RG4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | All Polyurethane |
D | 350 | SS-K3AP4X1.25S | SS-K3AP4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Polyurethane on Welded Stainless |
B | 350 | SS-K3US4X1.25S | SS-K3US4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Phenolic |
P | 350 | SS-K3TM4X1.25S | SS-K3TM4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Polyolefin – Black |
P | 350 | SS-K3PB4X1.25S | SS-K3PB4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Polyolefin – White |
P | 350 | SS-K3PW4X1.25S | SS-K3PW4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | High Temp Moist Heat – Fiberglass-Nylon |
P | 300 | SS-K3NP4X1.25S | SS-K3NP4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | High Temp Dry Heat Phenolic  |
P | 250 | SS-K3TP4X1.25S | SS-K3TP4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Heavy Duty All Polyurethane |
SSPSBB | 350 | SS-K3APH4X1.25S | SS-K3APH4X1.25R | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | Nylon |
SSPSBB | 350 | SS-K3NY4X1.25SPSS | SS-K3NY4X1.25SPSR | 2 3/4 | 3 1/2″ | 5 1/8″ |
| 4″ | 1 1/4″ | High Temp Moist Heat Polymer Retort |
P | 350 | SS-K3RT4X1.25S | SS-K3RT4X1.25S | 2 3/4 | 3 1/2″ | 5 1/8″ |
Wheel Brakes are not designed to hold on inclines:
The caster brackets are made of stamped stainless steel.
Wheel Bearing: PS = Precision Sealed Ball Bearings, D = Delrin Bearings, P = Plain Bore
SWIVEL CONSTRUCTION: Stamped steel. Metal cover shields swivel bearings from dirt and dust
CENTER PIN is 1/2″ diameter steel rivet
Axle is 3/8″ diameter bolt with lock nut.
Wheel Bearing Types: (PS= Precision Sealed Ball Bearings, B= Ball Bearings, D= Delrin Bearings, RB= Roller Bearing, P= Plain Bore.)
FINISH: Stainless Steel
Deduct 1/4 lb. for weight of rigid caster.
Use the Polyolefin ( Industrial Plastic ) wheel for “Standing Loads”. Polyolefin wheels eliminate the possiblilty of a flat spot developing if the castered equipment is left parked for a prolong period.
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.
