2026 SmithCo SX6-53-40 Side Dump — Unit RT-121

SmithCo SX6-53-40 – Side Dump, 53-foot frame, 40-foot AR450 steel tub

SmithCo SX6-53-40 is a Side Dump with a 53-foot frame and a 40-foot AR450 steel tub.

Key Specs

• Type: 6-axle super side dump trailer
• Frame Length: 53-foot frame
• Tub: 40-foot AR450 steel tub
• VIN: ending in TL476997

Tub Construction

• Design: SX round-bottom tub
• Center divider: no center divider
• Dump direction: capable of dumping to either side

Capacity

• Capacity (water level): 26.8 cubic yards
• Capacity (heaped): 35.6 cubic yards
• Payload: allows operators to haul up to 37.4 tons

Axles & Suspension

• Suspension: Ridewell RW260 air-ride suspension
• Axles: 3 standard axles and 3 steerable lift axles

Hydraulics & Control

• Hydraulics: 6-inch hydraulic cylinders

Additional Features

• A standard side tipper truck generally carries a payload between 25 to 60 tons, though total capacity ranges from 30 to over 140 tons depending on the axle configuration and regional road limits