| BEAM WITH TWO MAGNETS | CONTROL UNIT | BEAM WITH FOUR MAGNETS | CLAMPING DEVICE | PDF DOWNLOAD |
TECHNICAL
DATA
The magnet body is a dynamo steel casting of high permeability. The
exciter coil is wound of copper wire and cast into the casting with
impregnating and sealing compound of good heat conductivity. Two pairs
of suspension lugs, one of the top, the other at the side permit
suspension of the magnet with pole face located either horizontally or
vertically.
An integrally cast terminal box at the top encloses the cable
terminals, rectifier set in single phase bridge connection and switch.
The type LR 250-N2 has the same dimensions and technical
specification but is supplied with separate control unit. The coils are
however designed for use with the control unit of Type SLV only.
TYPE : SLV-4 D/250
This control unit is suitable for one to four magnets and all magnets
connected to one control unit are switched ON and OFF in common. In the interest of safety, it is advisable to utilise only half the
effectively available tear-off force. Its max. tear-off force(pole face horizontally) of over 2500 Kg.
contrasts strikingly with the magnet weight of only about 32Kg. Type LR 250-n permits easy and most efficient working, since making
use of the most up-to-date components-magnets switch and rectifier are
all assembled into one unit. A standard suspension is provided. The results in increased
suspension heights in the event of smaller magnet distances.
Beams with other magnet distances and suspensions on request. Max.
lifting capacity at 3000 mm magnet distance : 2500 Kg. weight of the
beam (without magnets) : 28 Kg approx. A standard suspension is provided. This result in increased
suspension heights in the event of smaller magnet distance. Beams with
other magnet distances and suspensions on request. max. lifting capacity
at 2500 mm magnet distance : 3500 Kg. weight of the beam (without
magnets) : 74 Kg.
TYPE LR250-N
SEPARATE CONTROL UNIT
The type LR 250-N is supplied
with built-in rectifier and switch and the unit is supplied ready for
connection to AC supply with approx. meters long rubber cable and safety
plug.
TYPE LR 250-N2
DIMENSIONS
Power Input
: Approx. 133 W.
Operating Voltage
: 220 V, Single phase A. C.
Permissible duty cycle
: Approx. 32 Kg.
Max. tear-off force
: Approx. 2500 Kg.
The control unit is designed
with a rectifier set in single phase bridge connection, switch, pilot
lamp, fine wire fuse and interruptor (UT).
DIAGRAM ON THE RIGHT
A (m2) = max. area of sheet which can be lifted by one magnet as a
function of sheet thickness "s" considering the deflection at a minimum
safety factor of 2 and air gap 1 mm. (Measuring at 50 % duty cycle) The
tear-off force of a magnet can be read off the above graphs for any
particular job. Material properties must be taken into account as well
as magnet contact area, wall thickness at the contact point and air gap
between poles and load. The diagrams are based with the appropriate
friction coefficient.
EFFICIENT LOAD HANDLING
Particularly for heavy, solid
objects which are difficult to seize by other means.
A very useful aid for setting
up and spot-welding steel sections or aligning and holding down sheets
for butt welding.
The magnet centre distance
can be adjusted from max. 3000 mm to 300 mm by means of clamping devices
and regulating screws.
The magnet centre distance
can be adjusted from max. 2500 mm to min. 300 mm by means of clamping
devices and regulating screws.