Sandvik Mining and Rock Technology has launched the Sandvik LS312, a new 12-tonne capacity, heavy-duty flameproof underground LHD.

The LHD’s engine, a C7.1 mechanical engine with Tier II emission standard, has been developed into a new certified diesel engine system, which targets minimal emissions, maintenance and total cost of ownership, Sandvik says.

The LS312 is designed to meet the latest major international safety standards, including electronic diesel engine safety shutdown systems and roll-over and falling objects protection fitted as standard on all units. Significant improvements have also been made to operator cabin ergonomics and visibility to assist the safe and comfortable operation of the vehicles, the company said.

“This new LHD utility vehicle with Sandvik quick detachment system (QDS) provides a safe and efficient solution to meet the challenges of underground coal loading and hauling applications and reduces personnel exposure to harmful diesel emissions through use of Tier II engine and integrated exhaust aftertreatment systems,” Sandvik said. “Reduced consumables and up to 20% diesel fuel savings, as well as 15% reduction in service time due to improved maintainability, contribute to lower operating costs.”

Used in conjunction with Sandvik’s 57 t hydraulic assist roof support trailer, the LHD can help relocate larger longwall equipment, as well as a range of other QDS attachments, according to Sandvik.

Sandvik is also offering customers the possibility to upgrade and rebuild existing LS190 LHD fleets with the new C7.1 mechanical engine. Integration into other models, such as the LS170, is also planned in the near future, it said. This can be completed in conjunction with a rebuild or as a standalone upgrade package performed in one of its Sandvik OEM workshops.

Zane Swingler, Product Manager Flameproof Load and Haul, Mechanical Cutting Division, Sandvik Mining and Rock Technology, said: “Our new Sandvik LS312 flameproof underground loader is full of new innovations designed to improve safety, minimise emissions, increase productivity and lower your operating costs. We have combined feedback from customers and service personnel with our long history in underground coal LHDs to continually improve the product.”