Epiroc launches a new underground loader

Epiroc's 4-tonne Scooptram ST4 underground loader for narrow mining features a Stage V engine and redesigned frame, boosting traction force by 26% and breakout force by 19%. www.epiroc.com The new powertrain system, which includes updated components such as the transmission, converter, and engine options, significantly enhances the Scooptram ST4’s overall performance. It is available with both Tier 3/EU Stage IIIA and Tier 4/EU Stage V engine configurations. Notably, both engine alternatives offer 20% more power than the Scooptram ST2G’s current engine. In addition to faster cycle times and improved efficiency, the Stage V engine meets the highest emission standards, significantly reducing particulate matter (PM) and nitrogen oxides (NOx) in mining operations, thus improving underground air quality. These environmental benefits are further amplified by the loader’s compatibility with HVO100 fuel, which helps reduce the overall CO₂ footprint. “The new powertrain is the foundation of the Scooptram ST4’s superior mucking capabilities. Field trials show a 26% increase in average traction force compared to the ST2G, along with a 19% improvement in mechanical breakout force,” says Mary Zhu, Global Product Manager Scooptram – Small Segment. Additionally, the loader demonstrates a 27% increase in revolutions per minute (RPM) during mucking and hydraulic operations, and a 13% reduction in total cycle motion time. This results in faster bucket movements and hydraulic responses, leading to better fill factors and quicker loading. The enhanced powertrain enables the Scooptram ST4 to achieve up to 45% faster tramming speeds on flat ground with a loaded bucket and maintain higher gears even when tramming uphill under full load, delivering a notable boost in tonnage output per cycle. Another key upgrade is the redesigned rear frame, which improves both safety and reliability. The new layout lowers the frame by 100 mm, significantly enhancing operator visibility. High-quality components, such as a reinforced drive shaft and the optional passive Diesel Particulate Filter (pDPF) system, further increase reliability by enabling longer service intervals, reducing maintenance needs, and ensuring consistent performance in demanding underground conditions. The Scooptram ST4 is designed for drift sizes with a minimum height of 2.8 meters and performs exceptionally well at high altitudes. Field trials conducted at a mine located 4,100 meters above sea level showed the loader delivering up to 12% more power compared to the previous model. www.epiroc.com Powered by Induportals Media Publishing

Nov 6, 2025 - 12:05

Epiroc launches a new underground loader

Epiroc's 4-tonne Scooptram ST4 underground loader for narrow mining features a Stage V engine and redesigned frame, boosting traction force by 26% and breakout force by 19%.

www.epiroc.com

The new powertrain system, which includes updated components such as the transmission, converter, and engine options, significantly enhances the Scooptram ST4’s overall performance. It is available with both Tier 3/EU Stage IIIA and Tier 4/EU Stage V engine configurations. Notably, both engine alternatives offer 20% more power than the Scooptram ST2G’s current engine. In addition to faster cycle times and improved efficiency, the Stage V engine meets the highest emission standards, significantly reducing particulate matter (PM) and nitrogen oxides (NOx) in mining operations, thus improving underground air quality. These environmental benefits are further amplified by the loader’s compatibility with HVO100 fuel, which helps reduce the overall CO₂ footprint.

“The new powertrain is the foundation of the Scooptram ST4’s superior mucking capabilities. Field trials show a 26% increase in average traction force compared to the ST2G, along with a 19% improvement in mechanical breakout force,” says Mary Zhu, Global Product Manager Scooptram – Small Segment.

Additionally, the loader demonstrates a 27% increase in revolutions per minute (RPM) during mucking and hydraulic operations, and a 13% reduction in total cycle motion time. This results in faster bucket movements and hydraulic responses, leading to better fill factors and quicker loading. The enhanced powertrain enables the Scooptram ST4 to achieve up to 45% faster tramming speeds on flat ground with a loaded bucket and maintain higher gears even when tramming uphill under full load, delivering a notable boost in tonnage output per cycle.

Another key upgrade is the redesigned rear frame, which improves both safety and reliability. The new layout lowers the frame by 100 mm, significantly enhancing operator visibility. High-quality components, such as a reinforced drive shaft and the optional passive Diesel Particulate Filter (pDPF) system, further increase reliability by enabling longer service intervals, reducing maintenance needs, and ensuring consistent performance in demanding underground conditions.

The Scooptram ST4 is designed for drift sizes with a minimum height of 2.8 meters and performs exceptionally well at high altitudes. Field trials conducted at a mine located 4,100 meters above sea level showed the loader delivering up to 12% more power compared to the previous model.

www.epiroc.com