BBC 34W Pusher Leg Drill by Atlas Copco

Atlas Copco BBC 34W Pusher Leg Drill

The Atlas Copco BBC 34W Pusher Leg Drill is a heavy-duty pneumatic rock drill built for underground drilling work where power, reach, and reliability matter. Designed as an underground rock drill, the BBC 34W is made for production drilling in medium to hard rock and is well suited for mine, tunnel, drift, bolting, and screening applications. Atlas Copco lists the BBC 34W as a medium-range pneumatic rock drill with robust rifle-bar rotation, a long stroke length, and high penetration capability for demanding drilling conditions.

This model is powered by compressed air and designed around a large 3.15-inch piston with a 2.76-inch stroke, giving it the striking force needed to work efficiently even where air pressure is not ideal. The pusher leg control is positioned in the back head of the drill, giving the operator practical control during pusher-leg-mounted drilling.

Built for Underground Stone and Rock Drilling

The BBC 34W is intended for drilling hole diameters from 1 inch to 1.6 inches, using a 7/8 inch x 4-1/4 inch Hex shank configuration. That makes it a practical choice for underground drilling crews that need a serious pneumatic drill for rock, stone, mining, and tunneling work. The unit runs at approximately 2,280 blows per minute and requires about 186 to 187 CFM at 90 PSI, depending on the source format and rounding.

Atlas Copco’s handheld tools facts book identifies the BBC 34W as part of its underground pneumatic rock drill range and notes features including high-quality production drilling design and built-in water flushing. Water flushing helps clear drill cuttings from the hole and supports cleaner, more efficient drilling in underground environments.

Key Features

• Atlas Copco pneumatic underground rock drill
• Designed for pusher-leg-mounted drilling applications
• Built for medium to hard rock conditions
• 1 inch to 1.6 inch hole range
• 7/8 inch x 4-1/4 inch Hex shank size
• 2,280 blows per minute impact rate
• Large 3.15 inch piston diameter
• 2.76 inch stroke length for strong drilling performance
• Built-in water flushing for production drilling
• Pusher leg control located in the drill back head
• Designed for underground mining, tunneling, bolting, and screening work

Technical Specifications

• Model: Atlas Copco BBC 34W
• SKU: 8311040805
• Tool Type: Pneumatic underground rock drill
• Chuck / Shank Size: 7/8 inch x 4-1/4 inch Hex
• Hole Range: 1 inch to 1.6 inches
• Air Consumption: 186 CFM at 90 PSI
• Impact Rate: 2,280 blows per minute
• Piston Diameter: 3.15 inches
• Stroke Length: 2.76 inches
• Overall Length: 30.5 inches
• Weight: 76 lb per Atlas Copco specification
• Vibration Level: 20.4 m/s², 3-axis ISO 5349-2
• Sound Power Level: 127 Lw dB(A)
• Sound Pressure Level: 116 Lp dB(A)
• Part Number: 8311 0408 05

Performance Advantages

1. Strong drilling action for underground work

The BBC 34W is not a light service drill. It is built for serious underground rock drilling where crews need a tool that can keep driving holes in tough material. The combination of its 3.15 inch piston, 2.76 inch stroke, and 2,280 BPM impact rate gives it the power profile needed for production drilling.

2. Practical for pusher-leg setups

Atlas Copco places the pusher leg control in the back head of the rock drill, which helps keep operation straightforward when the drill is used in pusher-leg-mounted applications. Atlas Copco’s pusher leg data also identifies BBC 16W and BBC 34W compatibility across multiple pusher leg configurations.

3. Designed for wet drilling

Built-in water flushing is a major advantage in underground drilling. It helps move cuttings out of the hole, supports drilling efficiency, and makes the BBC 34W a stronger fit for production rock drilling environments than basic dry drilling tools.

4. Atlas Copco durability

Atlas Copco describes the BBC 34W as an all-rounder built for quality from day one. The design is focused on dependable performance in a wide range of underground applications, with a robust rotation system and long stroke length suited for high penetration rates.

Best Applications

The Atlas Copco BBC 34W Pusher Leg Drill is a strong fit for:

• Underground mining
• Tunnel and drift work
• Rock bolting preparation
• Screening applications
• Stone drilling
• Medium to hard rock drilling
• Production drilling where water flushing is required

Why Buy the BBC 34W? 

The BBC 34W is a serious pneumatic rock drill for crews that need industrial-grade performance, not a disposable jobsite tool. With its 7/8 inch x 4-1/4 inch chuck, 187 CFM air requirement, and Atlas Copco underground drilling design, it is built for customers who already know the cost of downtime and want equipment that can hold up in demanding environments.

For underground stone, mining, and tunnel drilling applications, the Atlas Copco BBC 34W Pusher Leg Drill delivers the power, control, and proven pneumatic design needed to keep work moving.