Description EH 9
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5 Description
5.1 Application
Use the machine only as intended, see chapter Safety, Proper use.
A wide selection of easily interchangeable tools makes this machine suitable for
breaking, chiseling, digging, puddling, hammering, ramming and deburring
tasks. The machine is suited for processing natural as well as synthetic stone
and asphalt and any type of masonry and concrete.
5.2 Functionality
Principle
The machine is a demolition hammer with a pneumatic percussion system.
It is driven by a maintenance-free three-phase AC motor.
A frequency converter converts the generated DC voltage to required three-
phase AC current.
The rotary movement of the three-phase AC motor is converted into a stroke
movement via a transmission and a crank gear.
The piston is moved forwards and backwards by the crank gear, this compresses
the air (forward movement) or generates a partial vacuum (backward move-
ment). Due to change in pressure the percussion piston is moved forward and
backwards (air cushion percussion system) and hits the tool.
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