Vardhman Machinery’s rock drilling machine lineup delivers rugged, site-proven performance for quarries, tunnelling, rock bolting and slope-protection works. Built around the LD-4 family, our drilling solutions are available in multiple mounts and configurations — wagon-mounted rigs, excavator-mounted units, scaffold/fixed rigs and specialised U-frame/DTH setups — so you get the right drill for your site, production rate and logistic constraints.
Quick overview of our rock drilling machine range
Vardhman Machinery has engineered the LD-4 rock drilling machine series for contractors and quarries who demand reliability, easy serviceability and predictable productivity. The LD-4 family is purpose-designed for hard rock (marble, granite and similar formations) and is offered in these principal variants: LD-4 (grease & oil types), LD-4 VM2 (grease type), excavator-mounted LD-4, scaffold/folding mount, wagon drill machine and a DTH / U-frame version. Each variant is optimised for a particular use case — mobile bench work, confined tunnel faces, heavy-duty wagon production or attachment to existing excavators.
Below is a concise guide to the LD-4 rock drilling machine variants we supply, followed by short, clear technical summaries for each model so you can match machine to job quickly. All numeric values are taken from the LD-4 manual and reflect typical or wagon example specifications; many items (pipe length, some fittings) are customisable on request.
LD-4 Rock Drilling Machine (standard type)
A compact rig for bench and face drilling where modularity and simple servicing are priorities. Typical specs (consolidated):
- Hole diameter: 3–7 in (75–175 mm).
- Max vertical drilling depth: ~25 m.
- Drill pipe: 76 mm standard (4 / 6 ft or customised).
- Motor: Pneumatic, ~4–4.5 HP (variant dependent).
- Working pressure / FAD: Typical minimum 8 bar; FAD 350–400 cfm (model dependent).
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LD-4 VM2 (grease type) — high-efficiency air usage
Same platform optimised with grease-lubricated systems to lower air consumption and extend bit life — ideal where compressor capacity is limited. Specs as LD-4; motor and air-consumption figures vary by sub-model.
- Hole Diameter: 32 mm – 64 mm
- Drilling Depth: 20 mtr
- Drill Pipe Diameter: R32 / R38 / Customised
- Drill Pipe Length: Customised
- Pneumatic Motor Power: 4 hp (only feed motor)
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Rock Drill Excavator-mounted LD-4 — attachment
Designed to be mounted on excavators for mobile site work and fast repositioning. Mounting fittings and hydraulic interfaces are customised per carrier drilling ranges follow LD-4 family norms (3–7", ≤25 m depth).
Hole Diameter: 3 – 7 inches (75 – 175 mm)
- Drilling Depth: 20 - 25 mtr. approx.
- Drill Pipe Diameter: Customised
- Drill Pipe Length: Customised
- Pneumatic Motor Power: 4.5 hp
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DTH Rock Drilling Machine/ U-frame variant
For specific operations that demand Down-The-Hole (DTH) tools or a U-frame configuration, Vardhman offers U-frame layouts compatible with LD-4 powerheads — custom specification available on request !
Hole Diameter: 3–7 inches (75–175 mm)
Drilling Depth: 20 - 25 m Approx.
Drill Pipe Length / Drill Pipe Diameter : Customizable
Pneumatic Motor Power: 4.5 hp
Minimum Required Pressure: 8 bar
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Where Are Rock Drilling Machines Used? Industries & Applications
Vardhman Machinery's rock drilling machines serve diverse sectors where precision drilling in hard rock formations is essential. Our LD-4 series delivers proven performance across mining, construction, infrastructure, and geotechnical applications throughout India and beyond. Whether you're extracting marble from quarries, advancing tunnel faces, or stabilizing highway slopes, our rock drilling machine variants provide the drilling capacity, mounting flexibility, and reliability your project demands.
Mining & Quarrying Operations
Rock drilling machines form the backbone of India's mining and quarrying industries, where efficient extraction of minerals, marble, granite, limestone, and other valuable resources depends on consistent drilling performance.
Tunneling & Underground Construction
Tunneling projects across India's expanding metro systems, hydroelectric schemes, and transportation corridors rely on robust rock drilling machines for efficient rock excavation.
Slope Stabilization & Anchoring Projects
India's mountainous terrain and expanding highway network create ongoing demand for rock drilling machines in slope protection and ground anchoring applications.
Foundation & Construction Projects
Modern construction in India's urban centers increasingly requires deep foundation drilling through rock layers for high-rise buildings, bridges, and industrial facilities.
Infrastructure Development
India's infrastructure expansion creates sustained demand for rock drilling machines across transportation, water, and energy projects.
Geotechnical & Specialized Applications
Beyond production drilling, rock drilling machines serve critical roles in ground investigation, geotechnical engineering, and specialized construction techniques.
Why Choose Vardhman Machinery Rock Drilling Machines for Your Industry?
Whether you need a wagon drill for quarry production, an excavator-mounted unit for mobile site work, or a scaffold rig for confined tunnel faces, we supply the optimal rock drilling machine variant for your application.
Our LD-4 rock drilling machines operate successfully in marble quarries across Rajasthan, tunnel projects in the Himalayas, highway construction throughout India, and mining operations nationwide—delivering consistent productivity in diverse geological conditions. We understand the specific requirements of each industry we serve. Our team provides application engineering, machine selection guidance, and on-site support to ensure your rock drilling machine delivers maximum productivity in your operational environment.
Contact Vardhman Machinery today to discuss your drilling requirements. Our application engineers will recommend the ideal rock drilling machine configuration, compressor sizing, and accessory package for your industry and project specifications.