Compact Rock BreakersFor the best in breaking get-go
Operators will feel the difference with a DEMCO hammer. Sealed accumulators and inbuilt valves keep blow energy consistent through the shift, ensuring productivity rates stay high. Meanwhile, a thoughtfully-designed damping system reduces operator fatigue by lowering noise and vibration in the cab. And with the right tool and technique, DEMCO breakers can handle vertical, horizontal and angled work without performance loss.
- Built-in blank fire protection stops the tool when it moves off the work surface
- Unmatched heat treatment & coating processes ensure a long service life
- Direct mount or quick hitch compatible; customised for your fleet
- Service kits, wear parts, seals, bushings and tools ready for quick dispatch
With options for 1–45 ton carriers, DEMCO compact hammers offer steady, reliable breaking power at an accessible price point.
Got questions? We’re here to help:
0508 21 22 23TOOL OPTIONS:
| Moil Point | Chisel | Blunt | Asphalt Cutter / Shovel | Pile Driver |
|---|---|---|---|---|
| [ Insert image ] | [ Insert image ] | [ Insert image ] | [ Insert image ] | [ Insert image ] |
| Handles concrete breaking or secondary demolition of average to extremely hard blocks. | Suited to earthworking and narrow-section excavation in medium to hard stratified rock. | Handles blocks of any hardness and reduces rubble to a manageable size. | Cuts and breaks road surfaces, floors, walls and brick. Available in-line or at 90° to suit your working direction. | Built for pilework, press-moulded supports & similar applications. |
COMPACT BREAKER SPECS:
| Model | DMB9 | DMB11 | DMB15 | DMB21 | DMB30 | DMB40 | DMB70G | DMB100G | DMB150G | DMB200G | DMB300G | DMB400G |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Working Weight (kg) | 95 | 115 | 155 | 225 | 350 | 450 | 850 | 1100 | 1200 | 1700 | 2200 | 2700 |
| Carrier Weight (T) | 1–1.5 | 1.5–2.5 | 1.7–3.5 | 2.5–6 | 4.5–7 | 6–10 | 8–14 | 10–16 | 12–18 | 18–25 | 25–32 | 32–45 |
| Tool Diameter (mm) | 38 | 45 | 50 | 68 | 70 | 80 | 100 | 110 | 120 | 135 | 150 | 160 |
| Oil Flow Range (LPM) | 15–30 | 20–35 | 20–35 | 30–60 | 30–65 | 45–100 | 60–110 | 70–110 | 90–120 | 125–150 | 150–190 | 190–250 |
| Operating Pressure (Bar) | 120–125 | 120–125 | 120–125 | 120–125 | 120–125 | 120–125 | 120–150 | 130–170 | 150–170 | 160–180 | 160–180 | 160–180 |
| Relief Pressure (Bar) | 170 | 170 | 170 | 170 | 170 | 170 | 210 | 210 | 210 | 210 | 210 | 210 |
| Back Pressure (Bar) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Impact Frequency (Bpm) | 780–1440 | 1140–1365 | 600–1150 | 600–1140 | 390–1000 | 450–1000 | 450–800 | 450–700 | 400–900 | 400–800 | 350–700 | 300–600 |
Specifications subject to change without notice.
FAQS
What’s the difference between a rock-breaker, a hydraulic hammer, and a percussion hammer?
Nothing. It’s a potato-potahtoe thing. Some people like to say rock-breaker, some prefer hammer. We don’t mind what you call them – just as long as when you need something to bust rocks and concrete, you call us.
What size jobs are compact rock breakers best suited to?
Designed for light to medium-duty work including civil construction, trenching, landscaping, light demolition and smaller quarry or yard tasks. Perfect for when you need full impact energy, without a fully hydraulic system.
What type of materials are compact rock breakers best suited to?
Concrete, asphalt and soft to medium rock are their specialty. They can handle the full range of materials for small to medium jobs with ease.
Why choose a compact breaker instead of a heavy-duty breaker for small jobs?
Compact breakers are gas assisted and use a nitrogen charge to assist piston rebound and impact transfer. This reduces hydraulic oil demand and simplifies the internal design, resulting in a lighter and more cost-effective attachment. For intermittent or lighter-duty work, they provide excellent impact force without the higher capital cost of a heavy-duty breaker.
What size excavators will compact breakers run on?
Our models suit a wide range of excavators, but correct sizing depends on hydraulic flow, operating pressure and carrier weight. DEMCO suppliers can help you find the right fit for your machine.
What benefits will I get from a compact rock breaker?
Our compact rock breakers are robust, lighter and tolerant of higher return-line pressures. They can run on machines without a dedicated rock breaker circuit, making them an economical and versatile choice for light to medium work.
PILE DRIVING
Can DEMCO rock breakers be used for pile driving?
Yes, select DEMCO breakers can be fitted with post tool attachments for posts, guardrails and light civil piling.
What size excavator is needed for breaker-based pile driving?
Attachments suit carriers from around 1 tonne to large excavators, depending on the pile size and breaker model. Larger hammers are recommended for driving larger and longer piles.
Are rock breakers accurate for pile driving?
Yes, for fencing or light civil piles. However, they are not a substitute for heavy structural piling systems.
Is it cost-effective to use a rock breaker for pile driving?
Using a multi-purpose breaker lets operators perform both breaking and piling without buying extra attachments.
MAINTENANCE
How do I store my rock breaker?
Keep it in a dry environment. If stored outdoors, position the chisel end low and the hitch end elevated to prevent moisture entry. Proper storage avoids internal corrosion. Keep in mind that long-term exposure to moisture increases the risk of internal corrosion inside your attachment.
Can I leave a rock breaker outside?
Short-term outdoor storage is acceptable if the breaker is stored with the chisel end pointing downhill. For long-term storage, indoor or properly sheltered conditions are recommended to reduce the risk of internal corrosion.
How do I select the correct size rock breaker for my excavator?
Breaker selection needs to account for carrier operating weight, hydraulic flow rate, working pressure and allowable back pressure. Specification tables can be found on the DEMCO website and DEMCO suppliers are always happy to help out with selecting the right sized rock breaker for your machine.
What routine checks are important before and after using a breaker?
Operators should regularly inspect tool wear and check hoses and fittings for any leaks. Regular greasing is a must, as is ensuring hydraulic flow and pressure settings are verified. Early inspection and detection of any minor issues, prevents any major issues cropping up in the long-term.
Why has the breaker impact weakened?
Common causes include low nitrogen charge, high back pressure, restricted couplers or worn seals. Proper hydraulic testing is needed to pinpoint the issue.
How can I be sure my breaker is working to full capacity?
Check nitrogen pressure, supply-line pressure, return-line back pressure, and flow rates. Accurate measurement ensures consistent performance.
What does frequency loss with heavy blows indicate?
Usually excessive back pressure, which slows piston return and reduces blow rate. Inspect hoses, any partially closed valves and couplers to correct.
WARRANTY AND SERVICE
What warranty coverage is available for DEMCO rockbreakers?
All breakers come with a three-year manufacturer warranty and access to a dedicated service network in your local area, including parts, service and technical assistance.
How long will I have to wait for new rock breaker parts?
Service kits, wear parts, seals, bushings and tools are held locally for quick dispatch when you need them. Shipping time will depend on your location.
How often does a rock breaker need to be serviced?
Daily inspections are a good maintenance habit to get into, along with regular greasing. Compact breakers also require a nitrogen pressure check at least once a year to maintain performance.
