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2-76 Series Kingpinless™ Casters

Made in USA

Kingpinless™ Dual Wheel Casters

2-76-RAT-1230-S
2-76-RAT-1230-S
Top Plates
Standard Top Plate
Standard Top Plate
Optional 42ST/42RT
Optional 42ST/42RT

Optional 90ST/90RT
Optional 90ST/90RT
Optional 95ST/95RT
Optional 95ST/95RT
RWM’s 2-76 Series Kingpinless™ Dual Wheel Casters feature all of the benefits of our patented Kingpinless™ raceway and offer twice the capacity load.

Our 2-76 Series Casters are proudly made in the USA! Log in below to download CAD drawings of this caster.

Dual wheel rigid casters top plates utilize a larger surface area on many sizes to accommodate the width of the wheels and leg spacing required. These casters will utilize special top plates combining the adapter plate and mounting plate together in one plasma cut component which look like this (DOWNLOAD). Dimensions stated as top plate size on these pages are the general outside dimensions of the standard plate when these tabs are not necessary such as on small sizes. Please contact the factory for specifics or if any questions in regards to the items you are looking at.
Features
Raceway Design: Patented Kingpinless™ single ball bearing precision machined raceway hardened to 53 Rockwell C minimum. Swivel section features a 3" diameter raceway with 1/2" ball bearings. Notched yoke is standard.
Capacity: 7000 lbs.
Axle: 3/4" bolt with locking or slotted nut as required
Finish: Laguna Blue powder coat
Wheels: Wheels are available with either 1" roller bearings which rotate on hardened and ground spanner bushings or 3/4" tapered bearings that rotate on the axle. All wheels are equipped with a lubrication fitting.
Mounting Plate Size: 5-1/4" x 7-1/4" x 3/8"
Bolt Hole Spacing: 3-3/8" x 5-1/4", slotted to 4-1/8" x 6-1/8"
Mounting Bolt Diameter: 1/2"
Leg Thickness: 3/8"
Options
CWB: Cam Wheel Brake
DSL: Demountable Swivel Lock
HT: High Temperature Lubrication
LT: Low Temperature Lubrication
SL: Swivel Lock
SR: Sealed Swivel Raceway
ZP: Zinc Plated
HTP: High Temperature Paint
FG: Foot Guard
LSL:L-Type Swivel Lock
VSL:Vertical Swivel Lock
SWP:Sweeper Brush
Benefits of Kingpinless™ Raceway
Benefits of Kingpinless™ RacewayOur 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
90ST* 6" x 7" 4-5/8" x 5-1/2" slotted to 4-3/8" x 5-5/8" 1/2"
90RT 6" x 7" 4-5/8" x 5-1/2" slotted to 4-3/8" x 5-5/8" 1/2"
95ST* 6" x 7-1/2" 4-1/2" x 6" slotted to 4-1/8" x 6-1/8" 1/2"
95RT 6" x 7-1/2" 4-1/2" x 6" slotted to 4-1/8" x 6-1/8" 1/2"
75ST** 4-1/2" x 6- 1/2" 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" 1/2"
75RT** 4-1/2" x 6- 1/2" 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" 1/2"
Applications
Dual wheel casters offer high weight capacities with minimal overall heights, better load distribution, floor protection and mobility than single wheel casters. This is a result of spreading the weight over a wider floor area while offering wheel differential action, resulting in less friction between the wheels and the floor, requiring less effort for the caster to swivel. Dual wheel casters are ideal for tow lines, shock load applications and abusive conditions, production line dollies and trucks used in various industries including but not limited to boat and ship molding and building, automotive, aerospace, metal fabricating, metal forging, heavy machinery and equipment, military equipment, mobile homes, etc. tractor pulled trailers, extreme duty platform trucks and material handling carts, air cargo and ground support equipment, storage tanks, gantries and heavy duty processing equipment, coliseum and gymnasium equipment, shipping / receiving carts, warehousing and freight terminal dollies and carts, and other extra heavy duty applications.
Specifications
spec Chart spec Chart spec Chart spec Chart spec Chart spec Chart spec Chart spec Chart spec Chart spec Chart
6" 2-1/2" Cast Iron 3600 8-1/16" 2-76-CIR-0625-S   2-76-CIT-0625-S 2-1/16" 37
6" 2-1/2" Durastan 3200 8-1/16" 2-76-DUR-0625-S     2-1/16" 21.7
6" 2-1/2" GT 4600 8-1/16"   2-76-GTB-0625-S   2-1/16" 21
6" 2-1/2" Rubber on Iron-EHT 2160 8-1/16" 2-76-RIR-0625-S-EHT   2-76-RIT-0625-S-EHT 2-1/16" 36.5
6" 2-1/2" Urethane on Iron 3240 8-1/16" 2-76-UIR-0625-S   2-76-UIT-0625-S 2-1/16" 39.5
6" 2-1/2" Rubber on Iron 1080 8-1/16" 2-76-RIR-0625-S     2-1/16" 36.5
6" 3" Cast Iron 6000 8-1/16" 2-76-CIR-0630-S   2-76-CIT-0630-S 2-1/16" 39
6" 3" Durastan 4000 8-1/16" 2-76-DUR-0630-S     2-1/16" 24
6" 3" Nylatron HD 5200 8-1/16"   2-76-NYB-0630-S   2-1/16" 22
6" 3" Rubber on Iron-EHT 2160 8-1/16" 2-75-RIR-0630-S-EHT   2-76-RIT-0630-S-EHT 2-1/16" 33
6" 3" Urethane on Iron 4000 8-1/16" 2-76-UIR-0630-S   2-76-UIT-0630-S 2-1/16" 33
6" 3" Solid Urethane 4000 8-1/16" 2-76-MUR-0630-S 2-76-MUB-0630-S   2-1/16" 24
6" 3" Rubber on Iron 1360 8-1/16" 2-76-RIR-0630-S     2-1/16" 33
8" 2-1/2" Cast Iron 4000 10-1/2" 2-76-CIR-0825-S   2-76-CIT-0825-S 2-3/4" 52
8" 2-1/2" Durastan 4000 10-1/2" 2-76-DUR-0825-S     2-3/4" 29
8" 2-1/2" GT 4800 10-1/2"   2-76-GTB-0825-S   2-3/4" 28
8" 2-1/2" Rubber on Iron-EHT 2680 10-1/2" 2-76-RIR-0825-S-EHT   2-76-RIT-0825-S-EHT 2-3/4" 41.5
8" 2-1/2" Urethane on Iron 3600 10-1/2" 2-76-UIR-0825-S   2-76-UIT-0825-S 2-3/4" 48.5
8" 2-1/2" Rubber on Iron 1340 10-1/2" 2-76-RIR-0825-S     2-3/4" 41.5
8" 3" Cast Iron 6000 10-1/2" 2-76-CIR-0830-S   2-76-CIT-0830-S 2-3/4" 49
8" 3" Durastan 5000 10-1/2" 2-76-DUR-0830-S     2-3/4" 28
8" 3" Nylatron HD 7000 10-1/2"   2-76-NYB-0830-S   2-3/4" 29
8" 3" Rubber on Iron-EHT 3360 10-1/2" 2-76-RIR-0830-S-EHT   2-76-RIT-0830-S-EHT 2-3/4" 52
8" 3" Urethane on Iron 5000 10-1/2" 2-76-UIR-0830-S   2-76-UIT-0830-S 2-3/4" 52
8" 3" Solid Urethane 5000 10-1/2" 2-76-MUR-0830-S 2-76-MUB-0830-S   2-3/4" 28
8" 3" Rubber on Iron 1680 10-1/2" 2-76-RIR-0830-S     2-3/4" 52
10" 2-1/2" Cast Iron 5000 12-1/2" 2-76-CIR-1025-S   2-76-CIT-1025-S 3-1/4" 63.5
10" 2-1/2" Durastan 5000 12-1/2" 2-76-DUR-1025-S     3-1/4" 30.5
10" 2-1/2" Rubber on Iron-EHT 3460 12-1/2" 2-76-RIR-1025-S-EHT   2-76-RIT-1025-S-EHT 3-1/4" 47.5
10" 2-1/2" Urethane on Iron 4740 12-1/2" 2-76-UIR-1025-S   2-76-UIT-1025-S 3-1/4" 58.5
10" 2-1/2" Rubber on Iron 1580 12-1/2" 2-76-RIR-1025-S   2-76-RIT-1025-S 3-1/4" 47.5
10" 3" Durastan 5800 12-1/2" 2-76-DUR-1030-S     3-1/4" 31
10" 3" GT 6800 12-1/2"   2-76-GTB-1030-S   3-1/4" 31
10" 3" Rubber on Aluminum-EHT 4000 12-1/2"   2-76-RAB-1030-S-EHT 2-76-RAT-1030-S-EHT 3-1/4" 61
10" 3" Rubber on Iron-EHT 4000 12-1/2" 2-76-RIR-1030-S-EHT   2-76-RIT-1030-S-EHT 3-1/4" 61
10" 3" Solid Urethane 6000 12-1/2" 2-76-MUR-1030-S 2-76-MUB-1030-S   3-1/4" 31
10" 3" Ultra Thick Urethane 6800 12-1/2" 2-76-URT-1030-S   2-76-UTT-1030-S 3-1/4" 64
10" 3" Urethane on Iron 6000 12-1/2" 2-76-UIR-1030-S   2-76-UIT-1030-S 3-1/4" 61
10" 3" Rubber on Iron 2000 12-1/2" 2-76-RIR-1030-S   2-76-RIT-1030-S 3-1/4" 61
12" 2-1/2" Durastan 6000 15-1/2" 2-76-DUR-1225-S     4-1/8" 44.5
12" 2-1/2" Rubber on Iron 1800 15-1/2" 2-76-RIR-1225-S   2-76-RIT-1225-S 4-1/8" 55.5
12" 2-1/2" Urethane on Iron 5400 15-1/2" 2-76-UIR-1225-S   2-76-UIT-1225-S 4-1/8" 76.2
12" 3" Cast Iron 7000 15-1/2" 2-76-CIR-1230-S   2-76-CIT-1230-S 4-1/8" 88
12" 3" Durastan 7000 15-1/2" 2-76-DUR-1230-S     4-1/8" 34
12" 3" Rubber on Aluminum-EHT 4560 15-1/2"   2-76-RAB-1230-S-EHT 2-76-RAT-1230-S-EHT 4-1/8" 88
12" 3" Rubber on Iron-EHT 4560 15-1/2" 2-76-RIR-1230-S-EHT   2-76-RIT-1230-S-EHT 4-1/8" 88
12" 3" Ultra Thick Urethane 7000 15-1/2" 2-76-URT-1230-S   2-76-UTT-1230-S 4-1/8" 101
12" 3" Urethane on Iron 6800 15-1/2" 2-76-UIR-1230-S   2-76-UIT-1230-S 4-1/8" 88
12" 3" Rubber on Iron 2280 15-1/2" 2-76-RIR-1230-S   2-76-RIT-1230-S 4-1/8" 88
To order a rigid caster, change the “S" to “R" in the model number. For example: “2-76-CIR-0630-R". To order rig only, omit the blue letters. For example: “2-76-0630-S". Dimensions shown are nominal. If precise dimensions are required, consult your RWM representative. For approximate weight of our rigid casters, deduct 5.4 pounds per item.

* Add 1/8" to caster overall height when using this top plate.
** Deduct 1/16" from caster overall height when using this top plate.