GAS POWERED BREAKERS/DRILLS
Cobra Combi, Cobra mk1, Cobra TT
Now Meets Tough U.S. EPA1 Emission Regulations!
Freedom of Movement, Zero Setup Time!
- Are Easy to Operate
- Run without a Compressor
- Hits harder than a 60 lb. air breaker
- Hits twice as hard as an electric breaker
With no compressors, hoses or cables to set up, gas breakers are ideal for smaller jobs. They are indispensable for tasks that involve moving along a line, from position to position. Or for working in remote, inaccessible locations. And for many years, they have been a standard piece of equipment for emergency teams.
But the Cobra Combi is not only a self-contained breaker, it’s a powerful drill as well. It can sink holes to the depth of 6.5 feet, and drill up to 12 inches per minute in solid granite.
A Multi-Purpose Tool
With a range of 18 different tools, you can use the Cobra Combi for everything
from cutting and breaking, to drilling, driving and compacting. So whether you need to just break
a small patch of concrete, or split a rock, you can get the job finished with a gas-powered machine
in the same time it takes just to set up a compressor and hoses.
You can use the multi-purpose Cobra Combi to:
- Break Concrete
- Cut Asphalt
- Drill
- Dig
- Split Rocks
- Drive Posts and Fences
- Drive Rods and Spikes
- Tamp and Compact Soil
- Tamp Ballast/Ties
| Breaking Concrete | Cutting Asphalt | Drilling | Digging | Splitting Rocks |
|---|---|---|---|---|
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The Atlas-Copco Cobra Combi is a successor to the earlier and well-known model Cobra 149 and the Pionjar Gas Drills. At the same time it is unique in its design since several improvements have been made to meet both environmental requirements from authorities as well as operators demand of ergonomic design and user comfort.
Cleaner emissions, lower vibrations, less noise
It is not only the design that is new on the Cobra Combi. Firstly, the noise level is lowered
from 114 to 110 dB thanks to a new muffler and it is thereby fulfilling the European Noise
Emission Directive (NED). Secondly, new vibration dampened handles reduces vibration levels
from 8 to 5 m/s². Also, with a new carburetor and a catalytic converter, the emissions
are cleaner and meet the tough US emission regulations, EPA1. Further, with a new choke control,
new carburetor and user-friendly start instructions, Cobra Combi is easy to use. The new gas
control gives the operator better control of the speed and enhance the precision when operating.
TECHNICAL SPECIFICATIONS
| Weight | Length | Depth | Width over handles | Tool shank | Sound level (Acc. to ISO 3744) |
Vibrations level (Acc. to ISO 8662) |
|---|---|---|---|---|---|---|
| 55 lbs | 28.81 in | 11.06 in | 23.03 in | 7/8” - 4 1/4” | 110 dB | 5 m/s2 |
CAPACITY
| Impact rate | Drilling speed (In granite, 1 21/64 drill) |
Max drilling depth |
|---|---|---|
| 2600 BPM | 11.8 in/min2 | 6.5 ft |
ENGINE
| Type | Power | Cooling system | Starter system | Recommended fuel | Oil type | Oil mix | Fuel capacity | Fuel consumption | Part number |
|---|---|---|---|---|---|---|---|---|---|
| 185 cc 1-cylinder, 2-stroke | 1kW | Forced air | Recoil starter | Unleaded | Atlas Copco two-stroke oil or similar | 2% 1:50 | 0.31 US Gallon | 0.36 US Gallon/hour | 8318 0800 00 |
Cobra Combi - Combination Breaker/Drill |
|||
| Model | Part Number | Tool Size | Price |
|---|---|---|---|
| Cobra Combi | 8318 0800 03 | 7/8" x 4-1/4" Chuck | $4635 |
Operator's
Manual, 934K
Spare
Parts List,
746K
Overhaul Instructions ,
6.6MB
Cobra mk1

The Cobra mk1 is the hardest hitting petrol driven breaker on the market. It incorporates a
number of unique design features. The vibration-dampened handle frame serves as both a protection
against rough handling and a fuel tank, keeping the fuel away from the heat of the engine. Thanks
to the patented leaf-spring construction, vibrations are down to an unprecedented 2.3 m/s2. Approved
according to EPA 1, the Cobra mk1 meets the toughest emission requirements in the world.
- Hard hitting, 60-joule performance
- Ideal for a wide range of applications such as; breaking concrete, cutting asphalt, tamping ballast, digging and other tasks
- Extremely low vibrations: only 2.3 m/s2
- Easy maintenance and service
- EPA 1 approved.
| Model | Part Number | Tool Size | Price |
|---|---|---|---|
| Cobra mk1 | 8318 0700 07 | 1-1/8" x 6" Chuck | $4,025 |
| Cobra mk1 | 8318 0700 03 | 1-1/4" x 6" Chuck | $4,025 |
Operator's
Manual, 767K
Spare
Parts List, 250K
Overhaul Instructions , 9.7MB
Cobra TT

The Cobra TT is specially designed for tie tamping. Its portability and flexibility eliminate
traffic disruptions caused from local ballast compunction. For maximum comfort, the Atlas Copco
Hand and Arm Protection System (HAPS) achieves a very low vibration level. For optimal tie tamping
and other maintenance jobs, the Cobra TT is right on track.
- Specially developed for tie tamping
- Impact energy of 40 Joule
- Unique vibration dampening
- Environmental friendly
| Model | Part Number | Tool Size | Price |
|---|---|---|---|
| Cobra TT | 8318 0700 11 | 1-1/4" x 6" Chuck | $4,350 |
| Cobra TT | 8318 0700 15 | 1-1/8" x 6" Chuck | $4,350 |
Operator's
Manual, 306K
Spare
Parts List, 306K
Overhaul Instructions , 9.7MB
Older Pionjar Parts Breakdowns 120,130,148,248, 47L /LA






