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Ridewell RAR-240 Trailer Underslung Air Ride Suspension - Non-Steerable - 25,000 lb Capacity - 2402206
Ridewell RAR-240 Trailer Underslung Air Ride Suspension - Non-Steerable - 25,000 lb Capacity - 2402206
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$2,158.26 USD
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Ridewell RAR-240-1-8-25-USW is a non-steerable underslung air ride suspension engineered for trailer applications requiring consistent ride height, controlled axle movement, and long-term durability. The suspension is designed to support heavy on-highway loads while maintaining precise axle alignment.
Key Features
- Underslung trailer air ride suspension
- Non-steerable configuration
- 25,000 lb suspension capacity rating
- Eccentric pivot bolt axle alignment system
- 60-durometer monopivot bushing design
- Shock absorber equipped
- Compatible with air disc or drum brake axles
Technical Specifications
| Model | RAR-240-1-8-25-USW |
| Application | Trailer |
| Suspension Type | Air Ride, Underslung |
| Steerability | Non-steerable |
| Capacity | 25,000 lbs |
| Ride Height Range | 7.5" to 9.0" |
Torque Specifications
| Fastener | Torque Value |
|---|---|
| Pivot Bolt / Nut, 1-1/4"-7 | 1000 ft-lb (1356 N-m) |
| Shock Bolt / Nut, 3/4"-10 | 200 ft-lb (271 N-m) |
| Air Spring Nut, 3/4"-16 | 50 ft-lb (68 N-m) |
| Air Spring Bolt, 1/2"-13 | 25 ft-lb (34 N-m) |
Ride Height / Travel
| Mounting Height | Up Travel | Down Travel | Pivot to Axle |
|---|---|---|---|
| 7.5" | 2.8" | 5.1" | 19.74" |
| 8.0" | 3.3" | 4.6" | 19.75" |
| 8.5" | 3.8" | 4.1" | 19.74" |
| 9.0" | 4.3" | 3.6" | 19.72" |
Included Components (Bill of Materials)
| Item | Qty | Part Number | Description |
|---|---|---|---|
| 1 | 2 | 1001R12607G | Air Spring 1R12-607 |
| 2 | 2 | 1117680B075 | Bushing Assembly, 60 Duro Monopivot |
| 3 | 2 | 1137694B000 | Eccentric Bolt (Forged), 9.5" |
| 4 | 4 | 1130090 | Huck Bolt 3/4" x 1.12, Grade 8 |
| 5 | 6 | 1145383B105 | HHCS 1/2"-13NC x 1-1/4", Grade 5, Zinc Plated |
| 6 | 4 | 1147698B105 | HHCS 3/4"-10NC x 3-1/4", Grade 5, Zinc Plated |
| 7 | 2 | 1150033 | Locknut 1-1/4"-7 UNC, Heavy |
| 8 | 2 | 1150558B102 | Nut 3/4"-16 NF, Grade 2 |
| 9 | 4 | 1150709B105 | Locknut 3/4"-10 NC Oval, Waxed |
| 10 | 4 | 1150059 | Huck Collar 3/4" Bobtail |
| 11 | 6 | 1160556B100 | Lock Washer 1/2", Split, Zinc Plated |
| 12 | 2 | 1167680B000 | Wear Washer, UHMW-PE, Black |
| 13 | 2 | 1270563B003 | Shock Assembly, 6" |
| 14 | 1 | 3267738C100 | Hanger Assembly, LH |
| 14 | 1 | 3267738C200 | Hanger Assembly, RH |
| 15 | 1 | 4280258 | Beam Assembly, LH |
| 15 | 1 | 4280259 | Beam Assembly, RH |
| 16 | 2 | 7000407 | Air Spring Mounting Plate |
| 17 | 2 | 9003092B000 | Anti-Turn Washer |
Installation Notes
- Axle alignment shall be in accordance with SAE or TMC recommended standards.
- Installer must set the suspension to the specified mounting height before torquing the pivot bolt to prevent pre-loading the rubber bushing.
- After final axle alignment, install the anti-turn washer over the eccentric bolt head and weld to the hanger.
- Suspension fasteners must be re-torqued initially at 6,000 miles and at 50,000 mile intervals thereafter.
- Axle-to-suspension welding must follow Ridewell Weld Process No. 1.
Maintenance Notes
- Inspect suspension structure, air springs, shocks, and fasteners during routine service intervals.
- Inspect pivot bushings and wear washers and replace if excessive wear is present.
Warranty Notes
- Suspension systems are warranted to be free from defects in material and workmanship when properly installed and maintained.
- Warranty coverage applies to the suspension only.
Add-On Products (Sold Separately)
- Bushing Replacement Kit -- 6040029
- Air Control Kits (contact Ridewell for available configurations)
