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Description
4
Description
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4.1
Areas of application
The devices must be as far as possible installed in a covered room.
If they are used in the open, protect the units against the effects of weather such as rain, hail, snow, direct
sunshine, dust, etc. - we recommend to use a cover in parking position. If the device is set up in a
continuously humid environment with strong temperature fluctuations, the correct functioning of the motor
and the brake are endangered by the forming of condensation.
Ambient temperature: - 20°C up to + 40°C. Humidity: 100 % or less but not under water
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DANGER!
It is not permitted to use the unit in an area at risk from explosion!
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4.2
Design
HADEF Steel jacks acc. DIN 7355 are winches
with stationary pinion rack and movable housing.
They are constructed for mobile use to lift and
lower load vertically with small lifting heights or
horizontally and tilt angle as supporting winch.
The load must always be in right angle (90°) to the
winch foot surface.
Optional with a safety crank or a ratchet safety
crank, load pressure brake included. The load will
hold in each position, safety.
Variations:
Steel jack with reduced total height
Steel jack with adjustable lifting claw foot
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4.3
Functions
The load is lifted/ lowered, by turning the winch handle. The incorporated load-pressure-brake prevents
automatic lowering of the load after release of the winch handle. Little after run of the load or turn of the
winch handle is due to the system and not a mistake.
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4.1
Important components
4.1.1
Housing
The housing is made of steel plate.
4.1.2
Brake
Load pressure brake inside the crank.
4.1.3
Gear
Rack and pinion drive
4.1.4
Crank
SIKU = Safety crank with load pressure brake
RAKU = Ratchet safety crank with load pressure brake and switching lever
4.1.5
Load contact
Head = upper load contact
Lifting claw = bottom load contact
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5.52.210.00.01.01
9
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