.svg){kind=icon}
Blasthole drills
ZR122
Rotary drill
- Hole diameter (in) 13 3/4
- Hole diameter (mm) 349
- Bit loading (kg) 55 338
- Bit loading (lbs) 122,000
- Single pass hole depth (ft) 65
- Single pass hole depth (m) 20
Purchase options
Request a quoteMake every shift count with high-performance drilling
Engineered to thrive in demanding drilling environments, the Komatsu ZR122 rotary drill delivers powerful, consistent performance shift after shift. Built with a rugged boxer-style mast and intelligent automated systems, the ZR122 helps your operation stay on target—whether you’re drilling through tough rock or optimizing hole quality to reduce downstream costs. When productivity, availability, and cost-per-meter drilled are non-negotiable, the ZR122 brings the torque, precision and structural resilience to help you hit your daily production goals.
- Robust Boxer-Style Mast: Increases structural reliability while reducing inspection time—supporting more machine availability and fewer unplanned interruptions.
- High-Force Rack-and-Pinion Pulldown: Delivers 122,000 lbs. of weight on bit and 16,000 lbs. of rotary torque to power through the hardest rock with confidence
- Automated Bit Carousel: Streamlines bit changes while reducing operator risk, helping maintain consistent fragmentation and hole stand-up integrity.
- High-Precision GPS (HPGPS): Enables accurate hole placement to support better blasting outcomes and more efficient downstream processes.
- Configurable and Application-Ready: Flexible design supports a range of setups to adapt to site-specific challenges and deliver low cost-per-meter drilled—even in difficult conditions.
Resources
Features and benefits
Solid boxer-style mast construction
Enclosed section, boxer style mast enhances structural reliability and helps reduce downtime. Makes inspection and repair of potential cracks easier by helping to reduce crack initiation points and stress risers.
Innovative rack and pinion pulldown
Help reduce maintenance time by promoting the reliability of the system. Innovative rack-and-pinion pulldown design was engineered to increase drilling forces for excellent dependability.
Auto-bit and pipe handling
Help reduce bit change downtime and promote zero harm with an advanced auto-bit changer carousel. Helps to flex into a new hole diameter rapidly so operators can seamlessly adapt the drill pattern to reach peak fragmentation quickly.
Enhanced structural design
Enhanced structural design on the mast, main and front frames are engineered for reliability. Easy to configure front frame allows optional add-ons or modification of the power supply.
Auto navigation capability with high-precision GPS (HPGPS)
Elevate your mine’s productivity with drilling accuracy ― high-precision GPS through auto-navigation capabilities . Allows movement of the drill between holes without the operator inside the cab.
Single, multi-pass angle drilling
Versatility to allow mines to select their mast configuration. Help mining operations adapt for multiple applications with the same drill.
Videos
The Komatsu ZR122 blasthole drill
Product spotlight-Komatsu ZR122 blasthole drill
Benefit from an enhanced platform drill that reinvents and modernizes drilling. The ZR122 features rugged and reliable rotary carriages, a powerful, precise rack-and-pinion pulldown system, and an enclosed boxer mast; this drill delivers ample torque and bit loading for tough rock conditions.
An offering of Komatsu's drill options
A suite of drill options engineered to handle varying conditions, including weak power grids, extreme temperatures and high altitude.
Komatsu's integrated screen handling and bolting cycle bolts
For all your varying drill conditions, including multiple bolt type installations, we have everything you need to complete your bolting cycle at Komatsu.
Komatsu's Integrated screen handling and bolting cycle Chemical Bolts Installation
Get complete and safe mechanized ground support installation with no operator exposed or manual handling when using the integrated screen handler.
Interchangeability between bolt types means better compatibility
Komatsu features a full range of consumables for all installable bolt types, including dollies and drivers, centralizers, and carousel flowers.
- The Komatsu ZR122 blasthole drill
- Product spotlight Komatsu ZR122 blasthole drill
- Video3
- Video4
- Video5
- Video6