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125 Series Kingpinless™ Casters

Made in USA

Heavy Duty Kingpinless™ Casters

125-UIT-0840_S
Top Plates
Standard Top Plate
Optional LLST/LLRT

Swivel Sections and Cross Sections
KINGPINLESS™ CASTER SWIVEL SECTION
Raceway Diameter
RWM’s 125 Series features the patented Kingpinless™ caster design. This is the design that RWM patented, and that has proven itself to be the best solution for demanding applications. This is the caster design that all others are now copying because it is simply unmatched in extending service life and reducing all possible causes for caster failure. The 125 Series offers capacity up to 40,000 pounds. Typical applications include ground support equipment, die carts, and aircraft engine stands. Leg thickness of 1/2" adds extra strength and durability. All swivel sections are supplied with a lubrication fitting for field maintenance.

Our 125 Series Casters are proudly made in the USA! Log in below to download CAD drawings of this caster.
Features
Raceway Design: Patented Kingpinless™ single ball bearing precision machined raceway hardened to 53 Rockwell C Minimum, 7" diameter raceway with 3/4" diameter ball bearings
Capacity: 40,000 lbs. Larger, higher capacity raceways are available. Contact factory for more information.
Finish: Laguna Blue paint
Wheels: Wheels are either 3", 4", 5" or 6" wide depending upon wheel size and type. Wheels have either a 3/4", 1", 1-1/4" or 1-1/2" roller bearing or 3/4", 1", 1-1/4" tapered wheel bearings. Roller bearing wheels rotate on a hardened and ground spanner, tapered wheel bearings rotate on the axle. All wheels are equipped with lubrication fittings.
Mounting Plate Size: 8-1/2" x 8-1/2" x 1/2"
Bolt Hole Spacing: 7" x 7"
Mounting Bolt Diameter: 5/8"
Options
DSL: Demountable Swivel Lock - When ordering the Demountable Swivel Lock (DSL),
                           you must also order the Notched Yoke (NY).
HDSL: Heavy Duty Demountable Swivel Lock
FCWB: Face Contact Wheel Brake
HT: High Temperature Lubrication
LT: Low Temperature Lubrication
NY: Notched Yoke
PCWB: Poly Cam Wheel Brake
SL: Swivel Lock
SR: Sealed Swivel Raceway
WS: Wheel Seals
ZP: Zinc Plated
HTP:High Temperature Paint
FG:Foot Guard
8SL:8 Position Swivel Lock
Benefits of Kingpinless™ Raceway
Our patented offset precision-machined raceway exerts radial force evenly where there is full contact between the ball bearing and the raceway. RWM's unique design adds more mass at key points. This, plus more thorough heat treatment, provides additional strength and combats brinelling into the core material.

The Result:
  • No direct "hammering" forces on the intersections of the raceways
  • Vastly reduced raceway wear
  • Elimination of the "pull apart" forces of stress in the swivel section
  • Smoother swiveling action
  • High maneuverability
  • Longer service life
  • Less maintenance
  • Extra impact resistance
  • High radial force absorption
Optional Mounting Plates
Optional Top Plate Number Mounting Plate Bolt Hole Spacing Bolt Size
LLST/LLRT 8-1/2" x 11" 7" x 9-3/4" 5/8"
Specifications
8" 4" Cast Iron 4000 11" 125-CIR-0840-S 125-CIT-0840-S 2-3/16" 70
8" 4" Forged Steel 10000 11" 125-FSR-0840-S   2-3/16" 86
8" 4" Forged Steel 20000 11"   125-FST-0840-S 2-3/16" 86
8" 4" Urethane on Iron 3500 11" 125-UIR-0840-S 125-UIT-0840-S 2-3/16" 62
8" 4" V-Grooved Forged 10000 11" 125-VFR-0840-S   2-3/16" 80
8" 4" V-Grooved Forged 15000 11"   125-VFT-0840-S 2-3/16" 80
10" 4" Cast Iron 5000 13" 125-CIR-1040-S 125-CIT-1040-S 2-9/16" 90
10" 4" Forged Steel 10000 13" 125-FSR-1040-S   2-9/16" 100
10" 4" Forged Steel 20000 13"   125-FST-1040-S 2-9/16" 100
10" 4" Rubber On Iron 1400 13" 125-RIR-1040-S 125-RIT-1040-S 2-9/16" 72
10" 4" Ultra Thick Urethane 4500 13" 125-UTR-1040-S 125-UTT-1040-S 2-9/16" 62
10" 4" Urethane on Iron 4200 13" 125-UIR-1040-S 125-UIT-1040-S 2-9/16" 75
10" 4" V-Grooved Forged 10000 13" 125-VFR-1040-S   2-9/16" 92
10" 4" V-Grooved Forged 15000 13"   125-VFT-1040-S 2-9/16" 92
10" 5" Cast Iron 6000 13" 125-CIR-1050-S 125-CIT-1050-S 2-9/16" 95
10" 5" Urethane on Iron 5000 13" 125-UIR-1050-S 125-UIT-1050-S 2-9/16" 80
11" 5" Rubber On Iron 1760 14" 125-RIR-1150-S 125-RIT-1150-S 2-5/8" 85
11" 5" Urethane on Iron 5500 14" 125-UIR-1150-S 125-UIT-1150-S 2-5/8" 85
11" 6" Cast Iron 10000 14" 125-CIR-1160-S 125-CIT-1160-S 2-3/4" 95
12" 4" Rubber On Iron 1600 15-1/2 " 125-RIR-1240-S 125-RIT-1240-S 3-3/8" 78
12" 4" Ultra Thick Urethane 5300 15-1/2 " 125-UTR-1240-S 125-UTT-1240-S 3-3/8" 75
12" 4" Urethane on Iron 4800 15-1/2 " 125-UIR-1240-S 125-UIT-1240-S 3-3/8" 78
12" 5" Rubber On Iron 2050 15-1/2" 125-RIR-1250-S 125-RIT-1250-S 3-3/8" 90
12" 5" Ultra Thick Urethane 6500 15-1/2" 125-UTR-1250-S 125-UTT-1250-S 3-3/8" 78
12" 5" Urethane on Iron 6000 15-1/2" 125-UIR-1250-S 125-UIT-1250-S 3-3/8" 90
12" 6" Cast Iron 10000 15-1/2" 125-CIR-1260-S 125-CIT-1260-S 3-3/8" 130
12" 6" Urethane on Iron 7500 15-1/2" 125-UIR-1260-S 125-UIT-1260-S 3-3/8" 95
14" 4" Ultra Thick Urethane 6200 18" 125-UTR-1440-S 125-UTT-1440-S 3-11/16" 90
14" 5" Ultra Thick Urethane 7600 18" 125-UTR-1450-S 125-UTT-1450-S 3-11/16" 85
14" 6" Ultra Thick Urethane 9000 18" 125-UTR-1460-S 125-UTT-1460-S 3-11/16" 140
16" 4" Rubber On Iron 2050 19" 125-RIR-1640-S 125-RIT-1640-S 3-9/16" 130
16" 4" Ultra Thick Urethane 7100 19" 125-UTR-1640-S 125-UTT-1640-S 3-9/16" 97
16" 4" Urethane on Iron 6000 19" 125-UIR-1640-S 125-UIT-1640-S 3-9/16" 130
16" 5" Rubber On Iron 2570 19" 125-RIR-1650-S 125-RIT-1650-S 3-9/16" 140
16" 5" Ultra Thick Urethane 8800 19" 125-UTR-1650-S 125-UTT-1650-S 3-9/16" 130
16" 5" Urethane on Iron 8400 19" 125-UIR-1650-S 125-UIT-1650-S 3-9/16" 140
18" 5" Rubber On Iron 2800 22" 125-RIR-1850-S 125-RIT-1850-S 4-1/4" 150
18" 5" Urethane on Iron 8600 22" 125-UIR-1850-S 125-UIT-1850-S 4-1/4" 138
20" 5" Rubber On Iron 2900 23" 125-RIR-2050-S 125-RIT-2050-S 4-1/4" 155
20" 5" Urethane on Iron 9000 23" 125-UIR-2050-S 125-UIT-2050-S 4-1/4" 149
To order a rigid caster, change the “S" to “R" in the model number. For example: “125-CIR-0840-R". To order rig only, omit the blue letters. For example: “125-0840-S". Dimensions shown are nominal. If precise dimensions are required, consult your RWM representative. For approximate weight of our rigid casters, deduct 12.5 pounds per item.