RWM Caster’s 52 Series is manufactured from cold formed steel. This series is highly recommended for use in medium duty industrial caster applications.
FEATURES
Swivel Section | Cold formed top plate, yoke and button are all heat treated to prevent brinelling, improve swivel action and increase service life. Load and thrust bearings are hardened and ground and rotate on hardened raceways. Top plate and legs are 1/4″ steel, legs formed for increased strength and continuously welded to yoke. All swivel sections are equipped with a lubrication fitting for field maintenance. RWM lubricates all swivel sections prior to shipment. |
Kingpin | 3/4″ diameter rivet hydraulically compressed to increase strength of swivel section as compared to staking |
Capacity | Up to1400 lbs. |
Axle | 1/2″ diameter drilled axle with lubrication fitting provided on 2″ casters to improve ease of lubrication |
Finish | Zinc plated to protect against corrosion |
Mounting Plate Size | 4-1/2″ x 6-1/2″ x 1/4″ |
Bolt Hole Spacing | 2-7/16″ x 4-15/16″, slotted to 3- 3/8″ x 5-1/4″ |
Mounting Bolt Diameter | 1/2″ |
APPLICATIONS
Movable racks | Corrugated box trucks |
Conveyor and drag line applications | Caster mounted production jigs and fixtures |
Utility trucks | Maintenance carts |
KINGPIN RACEWAY


OPTIONS
BRAKES | |
ICWB | Installable Face Contact Brake (2’ wide only) |
MICWB | Metal Installable Cam Wheel Brake |
WB | Side Wheel Brake (roller bearing only) |
WWB | Wrap Around Wheel Brake |
SWIVEL LOCKS | |
SL | Swivel Lock |
LUBRICATIONS | |
HT | High Temperature Lubrication |
LT | Low Temperature Lubrication |
KINGPIN, RACEWAYS, THREAD GUARDS, SEALS | |
KB | Nut and Bolt Kingpin |
SR | Sealed Swivel Raceway |
TG | Thread Guards |
WS | Wheel Seals |
FIFG | Field Installable Foot Guard |
![]() Wheel Diameter |
![]() Wheel Width |
![]() Capacity |
![]() Wheel Type |
![]() Overall Height |
![]() Roller Bearing |
![]() Ball Bearing |
![]() Plain Bearing |
![]() Swivel Lead |
![]() Approx Weight |
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4″ | 1-1/2″ | 1400 | Forged Steel | 5-3/4″ | 52-FSR-0415-S | 52-FSC-0415-S | 1-13/32″ | 8.8 | |
4″ | 2″ | 350 | Performance TPR | 5-3/4″ | 52-RPR-0420-R | 52-RPB-0420-R | 52-RPC-0420-S | 1-3/8″ | 6.5 |
4″ | 2″ | 350 | Rubber on Iron | 5-3/4″ | 52-RIR-0420-S | 52-RIC-0420-S | 1-3/8″ | 8.1 | |
4″ | 2″ | 400 | Signature | 5-3/4″ | 52-SWR-0420-S | 52-SWB-0420-S | 52-SWC-0420-S | 1-3/8″ | 6.2 |
4″ | 2″ | 500 | Polyolefin | 5-3/4″ | 52-POR-0420-S | 52-POB-0420-S | 52-POC-0420-S | 1-3/8″ | 6 |
4″ | 2″ | 600 | Urethane Polypropylene | 5-3/4″ | 52-UPR-0420-S | 52-UPB-0420-S | 52-UPC-0420-S | 1-3/8″ | 6.5 |
4″ | 2″ | 700 | Rubber on Aluminum | 5-3/4″ | 52-RAB-0420-S-EHT | 1-3/8″ | 6.5 | ||
4″ | 2″ | 700 | Solid Urethane | 5-3/4″ | 52-MUB-0420-S | 1-3/8″ | 6.2 | ||
4″ | 2″ | 700 | Urethane on Aluminum | 5-3/4″ | 52-UAR-0420-S | 52-UAC-0420-S | 1-3/8″ | 6.6 | |
4″ | 2″ | 700 | Urethane on Iron | 5-3/4″ | 52-UIR-0420-S | 52-UIC-0420-S | 1-3/8″ | 8.2 | |
4″ | 2″ | 800 | Cast Iron | 5-3/4″ | 52-CIR-0420-S | 52-CIB-0420-S | 52-CIC-0420-S | 1-3/8″ | 8.3 |
4″ | 2″ | 800 | Durastan | 5-3/4″ | 52-DUR-0420-S | 52-DUB-0420-S | 52-DUC-0420-S | 1-3/8″ | 6.4 |
4″ | 2″ | 800 | High Temp. Nylon | 5-3/4″ | 52-HNR-0420-S | 1-3/8″ | 5.8 | ||
4″ | 2″ | 800 | Pinnacle | 5-3/4″ | 52-PNR-0420-S | 52-PNB-0420-S | 52-PNC-0420-S | 1-3/8″ | 6 |
4″ | 2″ | 800 | V-Groove Iron | 5-3/4″ | 52-VIR-0420-S | 52-VIC-0420-S | 1-3/8″ | 8.5 | |
4″ | 2″ | 1050 | GT | 5-3/4″ | 52-GTB-0420-S | 1-3/8″ | 6.4 | ||
4″ | 2″ | 1400 | Nylatron HD | 5-3/4″ | 52-NYB-0420-S | 1-3/8″ | 6.9 | ||
5″ | 2″ | 375 | Performance TPR | 7-1/4″ | 52-RPR-0520-S | 52-RPB-0520-R | 52-RPC-0520-S | 1-13/16″ | 7 |
5″ | 2″ | 400 | Rubber on Iron | 7-1/4″ | 52-RIR-0520-S | 52-RIC-0520-S | 1-13/16″ | 9.1 | |
5″ | 2″ | 500 | Signature | 7-1/4″ | 52-SWR-0520-S | 52-SWB-0520-S | 52-SWC-0520-S | 1-13/16″ | 6.5 |
5″ | 2″ | 650 | Polyolefin | 7-1/4″ | 52-POR-0520-S | 52-POB-0520-S | 52-POC-0520-S | 1-13/16″ | 6.1 |
5″ | 2″ | 750 | Urethane Polypropylene | 7-1/4″ | 52-UPR-0520-S | 52-UPB-0520-S | 52-UPC-0520-S | 1-13/16″ | 7 |
5″ | 2″ | 800 | Rubber on Aluminum | 7-1/4″ | 52-RAB-0520-S-EHT | 1-13/16″ | 7.2 | ||
5″ | 2″ | 800 | V-Groove Iron | 7-1/4″ | 52-VIR-0520-S | 52-VIC-0520-S | 1-13/16″ | 9.9 | |
5″ | 2″ | 1000 | Cast Iron | 7-1/4″ | 52-CIR-0520-S | 52-CIB-0520-S | 52-CIC-0520-S | 1-13/16″ | 9.6 |
5″ | 2″ | 1000 | Durastan | 7-1/4″ | 52-DUR-0520-S | 52-DUB-0520-S | 52-DUC-0520-S | 1-13/16″ | 6.9 |
5″ | 2″ | 1000 | High Temp. Nylon | 7-1/4″ | 52-HNR-0520-S | 1-13/16″ | 6.9 | ||
5″ | 2″ | 1000 | Pinnacle | 7-1/4″ | 52-PNR-0520-S | 52-PNB-0520-S | 52-PNC-0520-S | 1-13/16″ | 6.3 |
5″ | 2″ | 1000 | Solid Urethane | 7-1/4″ | 52-MUB-0520-S | 1-13/16″ | 6.5 | ||
5″ | 2″ | 1050 | Urethane on Aluminum | 7-1/4″ | 52-UAR-0520-S | 52-UAC-0520-S | 1-13/16″ | 7 | |
5″ | 2″ | 1050 | Urethane on Iron | 7-1/4″ | 52-UIR-0520-S | 52-UIC-0520-S | 1-13/16″ | 9.2 | |
5″ | 2″ | 1200 | GT | 7-1/4″ | 52-GTB-0520-S | 1-13/16″ | 6.9 | ||
5″ | 2″ | 1400 | Forged Steel | 7-1/4″ | 52-FSR-0520-S | 52-FSC-0520-S | 1-13/16″ | 10.8 | |
5″ | 2″ | 1400 | Nylatron HD | 7-1/4″ | 52-NYB-0520-S | 1-13/16″ | 7.4 | ||
6″ | 2″ | 410 | Rubber on Iron | 7-3/4″ | 52-RIR-0620-S | 52-RIC-0620-S | 1-13/16″ | 9.5 | |
6″ | 2″ | 525 | Performance TPR | 7-3/4″ | 52-RPR-0620-S | 52-RPB-0620-R | 52-RPC-0620-S | 1-13/16″ | 7 |
6″ | 2″ | 600 | Signature | 7-3/4″ | 52-SWR-0620-S | 52-SWB-0620-S | 52-SWC-0620-S | 1-13/16″ | 7.2 |
6″ | 2″ | 700 | Polyolefin | 7-3/4″ | 52-POR-0620-S | 52-POB-0620-S | 52-POC-0620-S | 1-13/16″ | 8 |
6″ | 2″ | 820 | Rubber on Aluminum | 7-3/4″ | 52-RAB-0620-S-EHT | 1-13/16″ | 9.5 | ||
6″ | 2″ | 900 | Urethane Polypropylene | 7-3/4″ | 52-UPR-0620-S | 52-UPB-0620-S | 52-UPC-0620-S | 1-13/16″ | 7 |
6″ | 2″ | 1000 | Omega | 7-3/4″ | 52-UOR-0620-S | 52-UOB-0620-S | 1-13/16″ | 10.5 | |
6″ | 2″ | 1000 | V-Groove Iron | 7-3/4″ | 52-VIR-0620-S | 52-VIC-0620-S | 1-13/16″ | 11.2 | |
6″ | 2″ | 1200 | Cast Iron | 7-3/4″ | 52-CIR-0620-S | 52-CIB-0620-S | 52-CIC-0620-S | 1-13/16″ | 11.2 |
6″ | 2″ | 1200 | Durastan | 7-3/4″ | 52-DUR-0620-S | 52-DUB-0620-S | 52-DUC-0620-S | 1-13/16″ | 8 |
6″ | 2″ | 1200 | High Temp. Nylon | 7-3/4″ | 52-HNR-0620-S | 1-13/16″ | 8 | ||
6″ | 2″ | 1200 | Pinnacle | 7-3/4″ | 52-PNR-0620-S | 52-PNB-0620-S | 52-PNC-0620-S | 1-13/16″ | 6.9 |
6″ | 2″ | 1200 | Solid Urethane | 7-3/4″ | 52-MUB-0620-S | 1-13/16″ | 7.2 | ||
6″ | 2″ | 1200 | Torus | 7-3/4″ | 52-UAB-0621-S | 1-13/16″ | 6.1 | ||
6″ | 2″ | 1230 | Urethane on Aluminum | 7-3/4″ | 52-UAR-0620-S | 52-UAC-0620-S | 1-13/16″ | 7.8 | |
6″ | 2″ | 1230 | Urethane on Iron | 7-3/4″ | 52-UIR-0620-S | 52-UIC-0620-S | 1-13/16″ | 10.5 | |
6″ | 2″ | 1400 | Forged Steel | 7-3/4″ | 52-FSR-0620-S | 52-FSC-0620-S | 1-13/16″ | 12.5 | |
6″ | 2″ | 1400 | GT | 7-3/4″ | 52-GTB-0620-S | 1-13/16″ | 8 | ||
6″ | 2-1/2″ | 540 | Rubber on Iron | 7-3/4″ | 52-RIR-0625-S | 1-13/16″ | 13.8 | ||
6″ | 2-1/2″ | 1080 | Rubber on Iron-EHT | 7-3/4″ | 52-RIR-0625-S-EHT | 1-13/16″ | 13.8 | ||
6″ | 2-1/2″ | 1400 | Cast Iron | 7-3/4″ | 52-CIR-0625-S | 1-13/16″ | 15.1 | ||
6″ | 2-1/2″ | 1400 | Durastan | 7-3/4″ | 52-DUR-0625-S | 1-13/16″ | 10.8 | ||
6″ | 2-1/2″ | 1400 | Forged Steel | 7-3/4″ | 52-FSR-0625-S | 1-13/16″ | 19.5 | ||
6″ | 2-1/2″ | 1400 | Urethane on Iron | 7-3/4″ | 52-UIR-0625-S | 1-13/16″ | 17 | ||
6″ | 2-1/2″ | 1400 | V-Groove Iron | 7-3/4″ | 52-VIR-0625-S | 1-13/16″ | 17.2 | ||
8″ | 2″ | 500 | Rubber on Iron | 9-3/4″ | 52-RIR-0820-S | 52-RIC-0820-S | 2-1/4″ | 12.2 | |
8″ | 2″ | 600 | Performance TPR | 9-3/4″ | 52-RPR-0820-S | 52-RPB-0820-R | 52-RPC-0820-S | 2-1/4″ | 9 |
8″ | 2″ | 700 | Signature | 9-3/4″ | 52-SWR-0820-S | 52-SWB-0820-S | 52-SWC-0820-S | 2-1/4″ | 8 |
8″ | 2″ | 800 | Polyolefin | 9-3/4″ | 52-POR-0820-S | 52-POB-0820-S | 52-POC-0820-S | 2-1/4″ | 7.7 |
8″ | 2″ | 1000 | Rubber on Aluminum | 9-3/4″ | 52-RAB-0820-S-EHT | 2-1/4″ | 12.2 | ||
8″ | 2″ | 1000 | Urethane Polypropylene | 9-3/4″ | 52-UPR-0820-S | 52-UPB-0820-S | 52-UPC-0820-S | 2-1/4″ | 9 |
8″ | 2″ | 1050 | V-Groove Iron | 9-3/4″ | 52-VIR-0820-S | 52-VIC-0820-S | 2-1/4″ | 15 | |
8″ | 2″ | 1200 | Omega | 9-3/4″ | 52-UOR-0820-S | 52-UOB-0820-S | 2-1/4″ | 14.1 | |
8″ | 2″ | 1400 | Cast Iron | 9-3/4″ | 52-CIR-0820-S | 52-CIB-0820-S | 52-CIC-0820-S | 2-1/4″ | 15.3 |
8″ | 2″ | 1400 | Durastan | 9-3/4″ | 52-DUR-0820-S | 52-DUB-0820-S | 52-DUC-0820-S | 2-1/4″ | 9.7 |
8″ | 2″ | 1400 | GT | 9-3/4″ | 52-GTB-0820-S | 2-1/4″ | 9.7 | ||
8″ | 2″ | 1400 | Pinnacle | 9-3/4″ | 52-PNR-0820-S | 52-PNB-0820-S | 52-PNC-0820-S | 2-1/4″ | 7.8 |
8″ | 2″ | 1400 | Solid Urethane | 9-3/4″ | 52-MUB-0820-S | 2-1/4″ | 8 | ||
8″ | 2″ | 1400 | Torus | 9-3/4″ | 52-UAB-0821-S | 2-1/4″ | 7.3 | ||
8″ | 2″ | 1400 | Urethane on Aluminum | 9-3/4″ | 52-UAR-0820-S | 52-UAC-0820-S | 2-1/4″ | 9.3 | |
8″ | 2″ | 1400 | Urethane on Iron | 9-3/4″ | 52-UIR-0820-S | 52-UIC-0820-S | 2-1/4″ | 14.1 | |
8″ | 2-1/2″ | 670 | Rubber on Iron | 9-3/4″ | 52-RIR-0825-S | 2-1/4″ | 17.8 | ||
8″ | 2-1/2″ | 1340 | Rubber on Iron-EHT | 9-3/4″ | 52-RIR-0825-S-EHT | 2-1/4″ | 17.8 | ||
8″ | 2-1/2″ | 1400 | Cast Iron | 9-3/4″ | 52-CIR-0825-S | 2-1/4″ | 19.7 | ||
8″ | 2-1/2″ | 1400 | Durastan | 9-3/4″ | 52-DUR-0825-S | 2-1/4″ | 13.1 | ||
8″ | 2-1/2″ | 1400 | Forged Steel | 9-3/4″ | 52-FSR-0825-S | 2-1/4″ | 29.6 | ||
8″ | 2-1/2″ | 1400 | Urethane on Iron | 9-3/4″ | 52-UIR-0825-S | 2-1/4″ | 18.8 | ||
8″ | 2-1/2″ | 1400 | V-Groove Iron | 9-3/4″ | 52-VIR-0825-S | 2-1/4″ | 20 |
To order a rigid caster, change the “S” to “R” in the model number. For example, 52-FSR-0620-R. To order a rig only, omit the blue letters. For example: 52-0620-S.Note: (1.) For weight of Caster with brake add .24 pounds. (2.) For weight of Rigid Caster deduct .7 pounds. Dimensions shown are nominal. If precise dimensions are required, please consult your RWM Representative.