A 3-axis (tri-axle) powder tanker truck is a heavy-duty semi-trailer designed for the high-volume transport of dry bulk materials like cement, fly ash, lime, and flour. The additional third axle allows for significantly higher payloads compared to 2-axle models, making it the industry standard for long-distance industrial hauling.

Key Specifications & Features

Payload Capacity: Typically handles 30 to 60 tons of material with tank volumes ranging from 30cbm to 68cbm.
Tank Designs:
V-Shape: Optimized for bottom discharge and minimal residue.
W-Shape: Often used for larger capacities (e.g., 68cbm) to provide multiple discharge points.
Discharge Performance: Uses a pneumatic system capable of unloading approximately 1.3 to 1.6 tons per minute.
Materials: Constructed from high-strength carbon steel for durability or aluminum alloy to reduce the trailer’s tare weight, allowing for more cargo per trip.

Main Components

Pneumatic System: Includes an external or truck-mounted air compressor (often powered by a dedicated diesel engine like a Weichai 4102) and an internal fluidization bed to ensure smooth material flow.
Axle Configuration: Three heavy-duty axles (such as FUWA or BPW) usually paired with mechanical leaf spring or air suspension systems for stability under heavy loads.
Safety & Access: Equipped with top-loading manholes, non-slip walkways, and specialized discharge valves for pressure regulation during unloading.