KIPP Catalog Operating Elements & Standard Elements Page 1277
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Technical data for pot magnets Structure: Pot magnets are magnets that, due to their structure have only one attracting surface. No other surface is magnetic. This construction makes it possible to limit the three-dimensional affect of the magnetic field so that no unintentional magnetization of the entire workpiece in contact with the pot magnet, or of the machine elements surrounding the magnet occurs. Designs: The deep pot magnets series: K0545 K0546 K0547 have a core made of the permanent magnetic material AlNiCo, which is inserted for magnetic shielding into a soft iron pot with an intervening sleeve made of a non-magnetic material. The shallow pot magnets series: K0548 K0549 have a core made of the permanent magnetic ceramic material SrFE (hard ferrite) . This is also inserted into soft iron pot to create the desired magnetic shielding. The pot magnets series: K0550 K0551 have a SmCo core, an alloy of rare metallic elements together with cobalt. SmCo increases the magnetic force by three to five times that of AlNiCo or hard ferrite magnets by the same magnet size. Magnetic strengths: The values indicated in the table are minimum values that are achieved for a vertical pull-down with full-surface contact of the pot magnets on soft iron or low-carbon steel workpieces of sufficient thickness. By unclean pole faces or uneven workpieces, air gaps are formed which sharply decrease the attractive force. It is therefore advisable to always ensure a clean pole face and to clean it from time to time if necessary. Diagram: Reduction of the magnetic strength of a deep pot magnet with increasing air gap (nonmagnetic intermediate layers have the same effect as air gaps). 100 90 deep pot magnet magnetic strength % 80 70 60 gap L 50 workpiece 40 30 20 10 0 1 2 3 4 gap L mm 1276 5 6 Mounting instructions for shielded pot magnets without pins not correct correct correct 1,3 correct 1,3 SmCo pot magnets (deep or shallow) must not be mounted directly in iron, but must be screwed, glued, pressed or cast into a sleeve of non-magnetic material (see illustration below). not correct correct workpiece to be held Magnet series shielded system iron permanent magnet non-magnetic sleeve Non-magnetic material such as MS, Al, Cu or plastic Fe jacket Installation or fastening possibilities of pot magnets from to from to from to from to from to from to from to Order No. Description System Temperature* max. °C Fastening possibility K0545.01 K0545.10 K0546.01 K0546.09 K0547.01 K0547.10 K0551.01 K0551.15 K0548.01 K0548.10 K0549.01 K0549.26 K0550.01 K0550.18 deep pot magnet shielded 450 deep pot magnet shielded 450 deep pot magnet shielded 450 deep pot magnet shielded 200 shallow pot magnet shielded 100 Pressing in/shrink-fitting Gluing in Soldering in (soft soldering)/ Gluing in Riveting the pin in/ Screwing in Pressing in/gluing in/ Screwing in Pressing in/gluing in shallow pot magnet shielded 100 Screwing in shallow pot magnet shielded 200 Pressing in/gluing in * Long-term heating or alternating thermal stresses may lead to mechanical changes in the magnet system. In many cases they have no influence on the function. The same applies for chemical stresses (chemical baths, aggressive gases, etc).
1391 Pages | Valid until 12/2022 | Previous page | Next page
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