
5 Description
EH 6, EHB 7
22
Operator's manual
V
e
rsion 00
1
5
Description
5.1
Application
EH 6
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.
EHB 7
The wide selection of easily replaced tools makes it possible to drill holes with a
diameter up to max. 90 mm and are also suitable for breaking, chiseling, digging,
puddling, hammering, ramming and deburring. The machine is suited for pro-
cessing 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. The
machine features an additional drilling function depending on model.
It is driven by an electric motor.
"Chiseling" operating mode
The rotary movement of the electric motor is converted into a stroke movement
via a transmission and a crank gear while in "Chiseling" operating mode.
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.
While in "Chiseling" operating mode, the drill drive is uncoupled via the safety
clutch and the tool holder bushing is fixed in place to prevent turning in the tool
holder.
"Hammer drilling" operating mode
While in "Hammer drilling" operating mode, the rotational movement of the motor
is transferred to the drive shaft of the drill drive via a clutch. The drive shaft uses
gear wheels to turn the tool holder bushing in the tool holder.
Содержание EH 6
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