When you look at the G15 Pneumatic Air Pick Hammer, the first thing you notice is that it’s clearly not designed as a light-duty tool. This is a hand held jack hammer built for jobs where concrete is thick, material is hard, and time on site actually matters.
With a total length of 580mm and a solid 13kg body, the G15 sits firmly in the “heavy air pick” category. It uses compressed air at 0.63MPa to drive a 38.5mm piston over a long 155mm stroke, delivering a strong 55J impact energy at 18Hz. In simple terms: fewer wasted hits, deeper cracks, and faster progress in tough materials.
What the G15 Numbers Really Mean on the Job
Instead of just listing specs, it helps to understand how they work together.
55J impact energy
This is where the G15 separates itself from mid-range models. At 55 joules per blow, the jack hammer is designed to break hard concrete and compact pavement without relying on excessive frequency. You feel the power in each strike.155mm hammer stroke + 38.5mm piston
The long stroke combined with a slightly larger piston means more air volume is used per cycle. This is one reason the G15 needs 28L/s air consumption, but it’s also why the blows feel “heavier” and more effective.18Hz impact frequency
Compared with lower-frequency heavy picks, 18Hz keeps the work moving. It’s fast enough to avoid chipping fatigue, but not so fast that energy is wasted on surface vibration.13kg total weight
On paper, 13kg sounds heavy. On site, it actually helps. The weight keeps the Pneumatic jack hammer pressed into the material, reduces kickback, and improves control when breaking floors or road surfaces.19mm air hose inner diameter
This is not optional. With 28L/s air consumption, a smaller hose will choke the tool. Using a 19mm hose keeps airflow stable and allows the G15 to deliver its rated 55J consistently.24 × 70mm chisel shank
A standard heavy-duty size that matches the impact level of the tool. Proper shank fit is critical here—wrong size means energy loss and faster wear.
Typical Applications for the G15 Pneumatic Jack Hammer
Based on its power level and structure, the G15 is best suited for:
Breaking thick concrete slabs and foundations
Road and pavement demolition, including asphalt and reinforced concrete
Mining and quarry work, especially compact layers
Heavy industrial maintenance, such as furnace or structure cleaning
Large construction projects like bridges, highways, docks, and power facilities
This is not a finishing tool. It’s the jack hammer you use when material must be opened, cracked, or removed efficiently.
Questions Customers Usually Ask (and Honest Answers)
1. Is the G15 still practical as a hand held jack hammer?
Yes, but it’s meant for ground and wall work, not long overhead tasks. At 13kg, the weight actually improves stability and reduces bounce when breaking concrete floors or pavement.
2. What kind of air supply does it really need?
To get full performance, the air system must match the data:
Working pressure: 0.63MPa under load
Air consumption: 28L/s
Hose: 19mm inner diameter
A weak compressor or small hose will turn a 55J tool into something much less impressive.
3. Why does the G15 consume more air than smaller models?
Because power comes from air volume and stroke length. The 38.5mm piston and 155mm stroke move more air each cycle. That extra air is what creates the stronger impact.
4. How do you avoid damaging the tool during use?
The same rules from your product knowledge apply, and they matter more at this power level:
Never run the jack hammer empty (no dry striking)
Don’t force the chisel if it’s stuck—change angle or free the material
Keep the air hose straight, clean, and leak-free
Always use the correct 24 × 70mm chisel
5. What maintenance does the G15 really need?
Simple but consistent:
Add pneumatic oil before starting work
Oil the tool every 2 hours during continuous operation
After heavy daily use, clean and inspect
Weekly disassembly, flushing, drying, and re-oiling helps extend service life
Oil the tool before storage if it won’t be used for several days
With a long-stroke, high-impact Pneumatic jack hammer, lubrication is not optional—it’s protection.
Final Thoughts on the G15 Pneumatic Air Pick Hammer
The G15 Pneumatic Air Pick Hammer is a serious hand held jack hammer for serious work. Its combination of 55J impact energy, 18Hz frequency, 155mm stroke, and 13kg weight puts it firmly in the heavy-duty category. When paired with the correct 0.63MPa air supply, 28L/s airflow, and 19mm hose, it delivers exactly what the numbers promise.
If your job involves hard concrete, road surfaces, or dense industrial materials, the G15 is not about finesse—it’s about getting the work done faster, with fewer hits and less wasted effort.