Putzmeister presents Wetkret 2 Narrow Vein, the first dual operation mechanized concrete spraying equipment for narrow vein mines

• Putzmeister Underground introduces the Wetkret 2 Narrow Vein, a mechanized concrete spraying machine for narrow vein mines with sections as small as 2.5 x 2.5 meters.

• The equipment features advanced pumping technology with a maximum flow rate of 13 m³/h, dual power options (electric and diesel), and a remote-controlled telescopic spraying arm reaching up to 7.5 meters.

• Designed for high maneuverability and safety, it reduces personnel exposure in challenging underground conditions and includes a certified cabin and integrated cleaning system.

• Multiple optional configurations are available to tailor the machine to specific operational needs, including biodegradable hydraulic oil and automatic greasing systems.

Putzmeister Underground, the Putzmeister’s division specialized in underground equipment, will present its latest innovation in mechanized concrete spraying equipment: Wetkret 2 Narrow Vein.

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Specifically designed to operate in reduced sections of up to 2.5 x 2.5 m, this robotic equipment features Putzmeister's most advanced pumping technology and experience, offering a compact, safe, and highly efficient solution for one of the most demanding environments in the sector. Wetkret 2 Narrow Vein allows mechanizing the application of shotcrete in narrow veins, significantly improving operational safety and reducing personnel exposure to adverse conditions.

Latest technology for narrow veins

Putzmeister is globally recognized as a leading manufacturer of concrete pumps; innovation and development in this field are the foundation of its business, being a benchmark in the sector. The heart of the Wetkret 2 Narrow Vein incorporates its latest pumping technology with OPS control which translates into lower pulsation, easy maintenance and common in other equipment of the Wetkret line.

The theoretical maximum concrete flow rate reaches 13 m³/h at 40 bar, making it an ideal solution for applications in galleries with reduced dimensions. The equipment can be connected directly to the mine's electrical network or spray with its powerful diesel engine (Dual Drive). Additionally, like other equipment in Putzmeister's Wetkret series, it comes equipped with a precise additive synchronization system with concrete flow controlled by software.

As for the remote-controlled telescopic spraying arm, with a vertical reach of up to 7.5 m and deployment once the front is reached, it allows mechanizing the application of shotcrete in narrow veins, significantly improving operational safety and reducing personnel exposure to adverse conditions.

Finally, the articulated design with reduced dimensions (7360 x 1409 x 2295 mm) allows for a high maneuverability, combined with the 106 kW diesel engine (or 55.4 kW with Stage V) and traction system with individual motors on each wheel. As an option, it can incorporate an anti-slip system to improve performance on uneven or low-adhesion terrain. The component distribution allows easy and safe access to elements that require more attention, such as the dual brake system power panel that separates high and low voltages, the FOPS/ROPS certified cabin with plug-in design, batteries and hydraulic oil filters. Additionally, the equipment has an integrated cleaning system that ensures durability.

Options based on Putzmeister Underground's experience

Putzmeister Underground offers a wide range of optional configurations to adapt the equipment to the specific needs of each operation. These include the use of biodegradable hydraulic oil, high-efficiency filtering systems with breather dryer, automatic greasing during translation, traming direction lights, transformers for discontinuous currents and various options for tires, operator seat and cleaning pump among others.