7655 Portable Rock Drill

Hand-held pneumatic Leg Rock Drill / 7655 rock drill/ drilling machine is a high efficiency rock drilling machine. 

It's widely used in mining and roadway drivage of drilling operation. 

Also it's an important tool for railway, water conservancy, and construction. 

7655 Portable Pneumatic Rock Drill l can be used with FY200B oiler and type FT160A (FT160B, FT160C) air leg.

It can be used for drilling the medium hard rock for wet drilling, drilling horizontal and inclined hole.

Professional Pneumatic Hand Held Rock Drill For Mining And Construction

The 7655 Portable Rock Drill is a classic heavy-duty pneumatic rock drill widely used in underground mining, quarry production, railway construction, hydropower engineering, tunnel excavation, and civil infrastructure projects. Designed for wet drilling in medium-hard and hard rock, it delivers excellent impact energy, fast penetration rates, and dependable performance under demanding working conditions.

Powered entirely by compressed air, the 7655 combines percussion and rotary drilling mechanisms to efficiently create blast holes, anchor holes, and development holes. It can be operated as a hand-held drill or paired with FT160A, FT160B, or FT160C pneumatic air legs for greater stability and higher drilling productivity.

Its rugged construction, low maintenance requirements, and excellent adaptability have made the 7655 one of the most trusted pneumatic rock drills in the mining industry.

Advanced Pneumatic Percussion Technology

The 7655 uses compressed air to generate high-frequency impact energy for efficient rock penetration.

Working Principle

The drilling process includes:

Compressed air enters the valve system.
The piston reciprocates rapidly inside the cylinder.
Impact force is transferred through the drill steel.
The drill rod rotates continuously.
The drill bit fractures the rock.
Air and water flushing remove cuttings from the borehole.

This system provides:

High percussion efficiency
Fast drilling speed
Stable drilling performance
Excellent hole quality
Reliable long-term operation
Key Features Of 7655 Portable Rock Drill
Powerful Impact Performance

The heavy-duty piston generates high percussion energy for rapid drilling.

Advantages
Faster penetration rates
Improved drilling productivity
Excellent hard rock performance
Reduced drilling time
Portable Heavy-Duty Design

The compact structure allows convenient transportation while maintaining industrial-grade durability.

Benefits
Easy handling
Flexible operation
Suitable for confined work areas
Excellent mobility
High Drilling Efficiency

The optimized valve mechanism ensures efficient use of compressed air.

Suitable for drilling:

Granite
Basalt
Limestone
Marble
Quartzite
Metal ore formations
Compatible With Pneumatic Air Legs

The 7655 can be equipped with:

FT160A Air Leg
FT160B Air Leg
FT160C Air Leg

This significantly reduces operator fatigue and improves drilling precision.

Durable Construction

Manufactured with precision-machined, wear-resistant components including:

High-strength cylinder
Heavy-duty piston
Precision valve system
Reinforced housing
Wear-resistant internal parts

These features ensure long service life under harsh mining conditions.

Typical Technical Specifications

Typical specifications include:

Working Pressure: 0.55–0.65 MPa
Weight: Approximately 24 kg
Overall Length: 628 mm
Drilling Diameter: 32–42 mm
Maximum Drilling Depth: Up to 5 m
Impact Frequency: ≥36–38 Hz
Impact Energy: ≥65 J
Shank Size: H22 × 108 mm
Air Consumption: ≤54–80 L/s (depending on operating pressure)

Specifications may vary slightly depending on manufacturer and configuration.

Applications
Underground Mining

Suitable for:

Blast hole drilling
Ore development
Production drilling
Mine roadway excavation
Quarry Operations

Ideal for:

Granite quarrying
Limestone mining
Marble extraction
Aggregate production
Tunnel Construction

Used for:

Railway tunnels
Highway tunnels
Hydropower tunnels
Metro construction
Construction Engineering

Applications include:

Foundation drilling
Rock excavation
Slope stabilization
Anchor hole drilling
Water Conservancy Projects

Widely used for:

Dam construction
Canal excavation
Hydraulic engineering
Infrastructure development
Advantages Of 7655 Portable Rock Drill
High Productivity

Powerful percussion improves drilling speed.

Reliable Operation

Stable pneumatic performance ensures continuous operation.

Excellent Durability

Heavy-duty construction withstands demanding working environments.

Easy Maintenance

Simple mechanical structure reduces servicing time.

Cost Effective

Low maintenance costs and long service life improve return on investment.

Flexible Application

Suitable for both hand-held use and air leg-assisted drilling.

Recommended Accessories

For maximum performance, the 7655 Portable Rock Drill can be paired with:

FT160A Air Leg
FT160B Air Leg
FT160C Air Leg
FY200A Lubricator
FY200B Line Oiler
Taper Drill Rods
Button Bits
Cross Bits
Chisel Bits
Why Choose Us
Professional Rock Drilling Equipment Manufacturer

We specialize in:

Pneumatic Rock Drills
Portable Rock Drills
Air Leg Rock Drills
DTH Drilling Rigs
Mining Equipment
Rock Drilling Accessories
Strict Quality Control

Every 7655 Portable Rock Drill undergoes comprehensive testing before shipment, including:

Impact performance testing
Air leakage inspection
Functional testing
Quality verification
Factory Direct Supply

We provide:

Competitive factory pricing
Stable product quality
Fast delivery
Professional export service
OEM & ODM Services

Customized services include:

Private labeling
Technical modifications
Packaging customization
Color customization
Global Export Experience

Our products are exported worldwide to mining companies, tunnel contractors, quarry operators, and construction firms.

Professional Technical Support

We provide:

Product selection
Installation guidance
Maintenance support
Spare parts service
FAQs
1. What is the 7655 Portable Rock Drill used for?

It is mainly used for mining, quarrying, tunnel excavation, railway construction, water conservancy projects, and blast hole drilling.

2. Is the 7655 a pneumatic rock drill?

Yes. It operates entirely on compressed air.

3. What drilling diameter is recommended?

The recommended drilling diameter is 32–42 mm.

4. What is the maximum drilling depth?

The recommended drilling depth is up to 5 meters.

5. Can the 7655 be used with an air leg?

Yes. It is compatible with FT160A, FT160B, and FT160C air legs.

6. What rock formations can it drill?

It performs efficiently in granite, basalt, limestone, marble, quartzite, and other medium-hard to hard rocks.

7. Does the drill support wet drilling?

Yes. It is designed for wet drilling, helping suppress dust and improve hole cleaning.

8. Is OEM customization available?

Yes. OEM and ODM manufacturing services are available.

9. How can service life be extended?

Routine lubrication, proper operation, and timely maintenance help maximize equipment life.

10. Do you provide spare parts and technical support?

Yes. We provide complete after-sales service, spare parts supply, and technical support.

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