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Use only short run time (a maximum of 15 seconds), then move hammer and choose new angle of attack. If the tool heats up, allow the tip or cutting edge to air-cool.break.
Avoid too much play between chuck bushing and tool to prevent tool breakage or damage to the chuck bushing.
Use a gradual approach to breaking up material section by section.
Operate your breaker only after having positioned the demolition tool on your work surface. Stop hammer immediately when the material breaks up.
Lubrication:

Apply proper grease at least 4 times daily to make sure the lubricating film does not break.
The correct strike position should be a 90 angle to the work surface. The shank, chuck and carrier should form a unit.
Tool reconditioning:

Dull tips or edges or damaged tools can be reconditioned with milling, planing or lathing.
Moil Point
General use with demolition work and in quarries breaking up slag in steel mills (industrial application) demolishing foundations
roadway drivage and roadway shots in mining
Moil point with 4 forged dust grooves for shank ends from 70 mm
General use with additional cutting action
drawing pits in rocky subsoil
separating rock slabs

90 indexed also available
Wide chisel
General use in demolition work and in quarries
demolishing foundations
an alternative for especially dusty work
General use in demolition work and in quarries
demolishing foundations
an alternative for very dusty work
Moil point with 4 long forged dust grooves for shank ends from 110 to 130 mm
Flat chisel
Special demolition with high cracking action
all demolition work in concrete
and very tough rock
Blunt tool
Crushing large rock pieces in quarries
crushing slag
ground compression
Percussion buster
General use with additional cutting action
breaking up black top in road construction
shaking out foundry ladles
demolishing concrete and reinforced concrete

90 indexed also available
General use with additional cutting action
breaking up black top in road construction

90 indexed also available
Asphalt cutter
Compaction
Foot
Compression of ground and gravel
Elephant foot
Demolishing reinforced concrete areas
crushing large rock pieces in quarries
ground compression
 Ramming tool /

Post Hole driver
For beating in poles and pipes
produced according to request

Made to dimensions
For driving in pipes
produced according to request

Made to dimensions
 Ramming tool /

Post Hole driver
Failure due to:
Typical failure caused by misalignment between down pressure, hammer, and tool
(prying, levering).
Breakage due to improper contact between the tool's tip and rock or concrete.
Mushrooming or fast wearing caused by operating too long on the same spot, or too small a breaker on too hard a material.
Failure due to blank firing or
excessive wear of bushings
and/or chuck housing.
Failure due to opperating in one spot to long and overheating the nipple of the tool. The nipple than expands off the top of the tool. 15 second maximum run time in one place.
Fatigue breakage with typical
fatigue wrinkles due to steel defect.
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Equipment descriptions and specifications are subject to change without notice.
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Proper Maintenance Key to Hydraulic Breaker Life, Performance
Published  06/11/2007
 
As tough as hydraulic breakers are, they still demand a crack maintenance program to keep them hammering away. All hydraulic breakers, regardless of design or manufacturer, have the task of shattering, cracking or splitting material. The assignment isn't exactly gentle on the equipment. Wear and tear is an outright certainty, so maintaining the breaker is vital to keeping it running at peak efficiency.
 
Breakers will eventually fail after years of service, but the life cycle and performance of a given unit can be greatly enhanced through proper maintenance, which can be viewed from three separate perspectives: routine maintenance by the contractor, periodic rebuilds by the manufacturer, and preventative maintenance features within the breaker itself.  
 
Click here to read more.