Sandvik DD421/DD422 LH Outer Zoom

Murray Engineering’s service exchange components are purpose-built to help you minimise downtime and control maintenance spend — without cutting corners on quality.
With fast access to critical parts and components rebuilt to exceed OEM standards, we’ll help keep your drill in the mine and out of the workshop.

The Sandvik DD421/DD422 left hand outer zoom is the outer telescopic section of the left boom. It provides additional extension for drilling reach and allows accurate positioning of the drill feed in wide or elevated faces.

Sandvik DD421/DD422 Drill Technical Snapshot

• Twin 25 kW rock drills: Each rig is fitted with dual RD525 hydraulic rock drills, delivering powerful percussion for rapid development drilling.
• Face coverage up to 60 m²: Designed for mine development in drives and cross-sections ranging from 8–60 m².
• Twin SB60 booms: Robust, extendable booms with hydraulic parallelism for accurate and efficient drilling patterns.
• Heavy-duty carrier: Frame-steered diesel carrier provides strong tramming capability and maneuverability in underground headings.
• ROPS/FOPS-certified cabin: Ergonomic operator environment with noise suppression and safety features for improved productivity underground.

Why Miners Choose Murray Engineering for Service Exchange Components

• Reliability – Every component is stripped, rebuilt, and rigorously tested in-house to meet or exceed OEM standards, so you can install with confidence and keep machines running.
• Affordability – Cut maintenance budgets by up to 60% compared to buying new, without compromising on safety or performance.
• Speed – Our extensive inventory and quick turnaround times mean the parts you need are ready when you need them — helping you avoid costly hold-ups.
• Locally supported – With teams and stock in WA and NSW, you get Australian-based service, faster freight, and direct support from technicians who understand your site.
• Sustainable – Reduce waste and meet your ESG targets with our sustainable remanufacturing approach — without sacrificing quality.

📩 Enquire now to check availability and pricing.