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Retaining magnets

Standard element maker Elesa+Ganter of Furtwangen has enlarged its
extensive product portfolio with the “retaining magnets” line of
products. The new, extensive range includes different types and
designs such as fl at grippers, rod-type grippers, button magnets
and U-type magnets.
Owing to their structure, all the magnet systems have only one
magnetic contact surface, with the magnetic power being focused
onto the adhesive contact surface directly with iron poles. Many
designs have a shielded magnet system, preventing the surrounding
area from being magnetised.
Ganter supplies the retaining magnets in different materials:
- Hard ferrite (HF) is a very reasonably priced material which can
be used up to a maximum temperature of 200°C. The magnetic
adhesion is good, but decreases with increasing temperature.
- Aluminium-nickel-cobalt (AlNiCo) is extremely hard and tough
and can be machined. These magnets deliver a steady and regular
magnet fi eld even under high temperature fl uctuations and can
therefore be used for temperatures as high as 450°C.
- Samarium-cobalt (SmCo) has a very high magnetic retaining
power, is highly temperature resistant (350°C) and is virtually nondemagnetisable.
- Neodymium-iron-boron (NdFeB) is the magnetic with the highest
magnetic adhesion power and is virtually non-demagnetisable.
Retaining magnets used as fl at grippers are available with zincplated
or red varnished steel housing or with full rubber jacket. The
rubber jacket makes these magnets the ideal choice for sensitive
surfaces. Also, the coeffi cient of friction is increased, with the
effect that high lateral retaining forces are achieved.
Rod-type grippers with zinc-plated or red varnished steel housing
can be pressed in, glued in or shrunk in. The magnet and iron poles
in the GN 54.1 type are arranged in sandwich fashion, delivering
ultimate retaining power also for small work pieces.
The button and U-type magnets are made of aluminium, nickel and
cobalt, with red varnish and with split magnetic contact surface.
They achieve high retaining forces, also at higher temperatures.
GANTER’s extensive range of products also includes design versions
with threaded bushing, threaded pin or with bore.
To prevent demagnetisation, most of the retaining magnets are
delivered with a sheet iron plate.
Find out more in the internet at www.elesa-ganter.com

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