Underground hard rock mining Press release Product and service Underground hard rock bolters Underground hard rock drills

Komatsu launches battery-electric versions of drilling and bolting rigs

2 min read / May 13, 2024

Bolter-ZB21B-San Xavier Mine AZ-DS-240405-KOM-9314.jpg

May 13, 2024 -- Komatsu is excited to introduce the second generation of the company’s Z2 product line of small-class development drill and bolting equipment with unique enhancements and additions, including the first battery-electric offerings within Komatsu’s underground hard rock portfolio, an innovative pumpable resin system solution, optimized ergonomics and more.

The small-class ZJ21 jumbo drill and ZB21 bolter initially launched in 2020 with a common platform. The new Z2 bolters and jumbos also feature optimized operator ergonomics designed to maximize comfort and visibility, user-friendly intuitive controls and engineering for ground-level maintenance.

The second generation ZB21 is a small-class bolter featuring a fully enclosed ROPS/FOPS-certified operator cabin, intuitive operator controls, integrated patented screen handling and industry-leading drifters manufactured by Montabert.

The bolter also introduces an optional Komatsu pumpable resin system using J-LOK P by Jennmar. The unique solution allows resin to be pumped into the drilled hole prior to bolt installation, permitting the use of more economical bolts and helping to decrease overall installed cost.

The second generation ZJ21 jumbo drill is a single-boom development drill with a fully enclosed ROPS/FOPS-certified operator cabin, innovative drilling feeds, advanced pilot hydraulics and renowned drifters manufactured by Montabert.

Both product lines now include battery-electric versions featuring Komatsu’s innovative approach to BEV with onboard, smart, opportunistic charging and designed for seamless integration and compatibility with existing mine infrastructure. The ZB21 and ZJ21 are the smallest size-class drills and bolters to offer a BEV option and feature a modular battery driveline with 83kWh of onboard energy designed for demanding tram cycles and the challenges of hard rock mining.

“As underground mining operations increasingly shift toward electrification of their fleets, our innovative, battery-powered Z2 jumbo drills and bolters will support that pivotal transition. By integrating into existing infrastructure, we can help enhance productivity while helping to reduce operating costs,” said Johan Kempe, Product Director for Underground Drilling at Komatsu. “The rollout of our second generation Z2-class marks a milestone in our commitment to advancing mining technologies and building upon the proven success of our products to empower the future of mine operators."

For more information, contact a Komatsu distributor.

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About Komatsu

Komatsu develops and supplies technologies, equipment and services for the construction, mining, forklift, industrial and forestry markets. For more than a century, the company has been creating value for its customers through manufacturing and technology innovation, partnering with others to empower a sustainable future where people, business and the planet thrive together. Front-line industries worldwide use Komatsu solutions to develop modern infrastructure, extract fundamental minerals, manage forests and create consumer products. The company's global service and distributor networks support customer operations to help enhance safety and promote productivity while working to optimize performance.

Media contacts

Jill Rick, Manager, PR and CSR

Jill Rick

Manager, PR and CSR

(262) 337-0854