Trailer-mounted screed mixer-pump Tragen B250DC

diesel

Overview
Bunker has developed mixer‑transporters to replace manual and fragmented methods (wheelbarrows, site mixers, cranes) for placing floor screeds. The Tragen B250DC is a mobile mixer‑transporter designed for continuous on‑site mixing and pneumatic pumping of screed and related mortars.

Applications

• Floor screeds and levelling mortars
• Pure and bound expanded clay
• Polystyrene, cork, fine gravel
• Normal and fine concrete (max aggregate up to 16–20 mm depending on variant)
• Lightweight concrete and sand

STAGE V powertrain and compressor
The Tragen B250DC range is driven by Kubota diesel engines compliant with EU STAGE V and coupled with Atlas‑Copco compressors rated at 5200 l/min. This combination provides the air flow and pressure required for pneumatic conveying without on‑site electrical supply.

Mobility and setup
The unit is towable on public and uneven roads and can be positioned on site by two operators. With the compressor fitted, the machine operates as a self‑contained pumping unit, enabling rapid deployment and use even on large construction sites.

Key features

• 270 L mixing vessel with hydraulically driven mixer, loading skip and scraping blade for controlled feeding
• Automatic engine speed regulator adapts RPM to required air flow to maintain pressure and reduce fuel consumption
• Internal sound‑absorbing coating to meet noise regulations
• Two‑stage high‑performance air filter with blockage indicator protects engine and compressor from dust
• Axle with torsion bars and oscillating arms for stability during transport
• Large access hood for maintenance and inspections
• Fuel tank sized to permit continuous operation over a full job cycle

Accessories

• Hose kit, hose holder, discharge hopper, cleaning kit and tool case
• Screw coupling and Perrot coupling options
• Homologated towing bar with lights (optional)
• Timed lubrication system (optional)

Technical data and specifications
Model: Tragen B250DC
Diesel engine: Kubota V1505‑CR‑T, 33.0 kW
Compressor: Atlas‑Copco, 5200 l/min
Working pressure: 7 bar
Vessel capacity: 270 L
Output: approx. 4.2 m³/h (variant dependent)
Max granulometry: 20 mm (variant dependent)
Max conveying distance: horizontal 180 m, vertical 100 m (depending on material and hose diameter)
Vessel outlet diameters available: 60 / 65 / 100 mm
Dimensions (B250 DC): L 4910 mm × W 1470 mm × H 1605 mm (H with skip up 2378 mm for some variants)
Weight (B250 DC): approx. 1690 kg

*Performance depends on material consistency and hose diameter.