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The Horst Wagons TR505RF is a 20-ton trailer-style tandem axle running gear engineered for both heavy-duty capacity and smooth, stable transport. With a 40,000 lb rated capacity, it’s built to handle demanding agricultural and industrial loads while maintaining excellent road handling characteristics. Its Road Flex Suspension system absorbs shocks and reduces vibration, protecting both the load and the towing vehicle during high-speed or uneven-terrain travel. The fixed bolsters set at 42.5" provide a stable, rigid mounting platform, while the heavy-duty tongue jack ensures safe and easy hitching, even under load. Equipped with 8-stud hubs rated at 12,000 lbs each and 1/2" Grade 70 safety chains, the TR505RF is designed for long service life and dependable performance. Sold without rims/tires, it allows you to choose the wheel and tire combination best suited to your operational needs. Whether you’re hauling grain boxes, silage boxes, or industrial cargo, the TR505RF combines capacity, stability, and ride comfort for efficient, reliable transport
| Attribute | Specification |
|---|---|
| Brand | Horst Wagons |
| Model | TR505RF |
| Type | Trailer‑Style Running Gear |
| Capacity (30 kph / 20 mph) | 40,000 lb. |
| Capacity (50 kph / 30 mph) | 36,000 lb. |
| Suspension | Road Flex |
| Hubs | 8‑stud |
| Spindles | 3″ dia., 1144 stress‑proof steel |
| Tandem Axle | 10″ × 4″ × .375 wall |
| Bolsters | 42.5″ fixed |
| Tongue & Jack | Heavy‑duty jack |
| Safety Chain | 1/2″ Grade 70 |
| Approximate Weight | 2,700 lb. (less rims & tires) |
| Height to Top of Bunk | 32″ (with 445/65 × 22.5 tires) |
| Bearings | — |
| Brake Options | 2‑wheel or 4‑wheel HD hydraulic disc brakes (22.5 rim) |
| Optional Features | 4″ bolt‑on riser kit (other heights available) |
| Primary Use | Agricultural hauling — forage & grain boxes |
| Tire Size | Type | Rim Size | Track Width | Capacity (lbs/tire) |
|---|---|---|---|---|
| 16.5 x 16.1 | 10 Ply | 16.1 x W14C x 8 | 79" | 5,200 |
| 19L x 16.1 | 12 Ply | 16.1 x W16C x 8 | 81" | 6,000 |
| 21.5 x 16.1 | 14 Ply | 16.1 x W16C x 8 | 81" | 7,850 |
| 425 x 22.5 | Used Truck | 22.5 x 13 x 8 | 76" | 12,000 |
| 445 x 22.5 | New Truck | 22.5 x 13 x 8 | 76" | 12,000 |
| 400 / 55 x 22.5 | 16 Ply | 22.5 x 13 x 8 | 76" | 7,820 |
| 560 / 45 x 22.5 | 16 Ply | 22.5 x 16 x 8 | 82" | 9,640 |
Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
US$40
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