Electropermanent Magnetic Chuck Magnaslot 50

The patented electropermanent square pole magnetic clamping plate *** Patent-No. EP1874504 *** is the perfect solution for clamping magnetic workpieces.

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Size [mm]
Field of application: milling, turning, drilling
Holding force: appr. 160 N/cm² corresponds to 400 kg/Pol
Pole division: Square pole 50 x 50 mm

Technical data

Model	Dimensions [mm]	Number of poles	Weight
High pole density [HD]	[L x W x H]		[kg]
304 HD 50	300 x 430 x 55*	24	50
306 HD 50	300 x 590 x 55	32	72
308 HD 50	300 x 750 x 55	40	91
404 HD 50	420 x 430 x 55	36	71
406 HD 50	420 x 590 x 55*	48	100
408 HD 50	420 x 750 x 55	60	127
410 HD 50	420 x 990 x 55	84	168
508 HD 50	480 x 750 x 55*	70	145
510 HD 50	480 x 990 x 55	98	192
606 HD 50	600 x 590 x 55	72	143
608 HD 50	600 x 750 x 55	99	181
610 HD 50	600 x 990 x 55*	126	240
Reduced pole density [ECO]	[L x W x H]
304 ECO 50	325 x 370 x 55	20	42
406 ECO 50	370 x 635 x 55	40	90
408 ECO 50	370 x 790 x 55	50	120
508 ECO 50	445 x 790 x 55	60	150
608 ECO 50	580 x 790 x 55	80	170
609 ECO 50	580 x 940 x 55	96	200
*stock standard

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The patented EPM magnetic clamping plates have a solid steel surface and are therefore significantly more resistant than conventional plates with epoxy resin against hot chips, coolant and other processing influences. The workpiece is clamped on the EPM magnetic clamping plate Magnaslot within seconds through an impulse current. This magnetic clamping plate allows for 5-side processing of your workpieces in only one clamp. This reduces equipping times to a minimum and increases productivity. Through the use of pole extensions, which adjust to the workpiece surface, any unevenness on the workpiece can be compensated for and a deformation of the workpiece can be prevented.

We have developed our Magnaslot Flux for clamping workpieces made of tool steels and high-alloy steels: www.assfalg-metal.com/en/magnets/special-applications/magnaslot-flux-pol50

The magnet field from the Magnaslot magnetic clamping plate guarantees low-vibration clamping of your workpieces. This protects the milling spindle as well as your tools, increases process safety and extends the service life. Electropermanent magnets combine both the electrical and thePermanent Magnet technology. These are permanent magnets that can be switched on and off electrically. Electropermanent magnets excel by their holding force which they do not even lose in case of a power failure. The electropermanent technology of the magnetic clamping plate with square poles guarantees the highest safety, because only a power impulse is needed for clamping. The workpiece is held on the magnetic clamping plate with reverse-pole permanent magnets.

In the event of a power failure or a cable break of the control line, the workpiece will remain clamped on the Magnaslot EPM magnetic clamping plates with complete holding force. An accidental loosening of the workpieces through malfunction is also ruled out through the two-button operation of the clamping plate both on the controller and on the cable remote control. Assfalg only sells magnetic clamping plates with a maximum number of poles on the solid steel surface of the magnetic clamping plate. Only this can guarantee maximum holding force. Furthermore, high production and process precision can be guaranteed with plane-parallelism of 0.02 mm and better. With the achieved holding force of 400 kg per square pole 50 x 50 mm, clamping forces of nearly 17 tons can be achieved on a 400 x 600 mm clamping plate through the high pole density.

Drastic reduction of set-up times
A 5-sided processing at simple and fast positioning of the workpiece
Low vibration while milling, and even distribution of holding force over the entire magnetic clamping surface
Using pole extensions, plane-parallelism of up to 0.01 mm is possible on the workpiece
Full utilization of the machine, because there are no disturbing edges unlike with mechanical clamping
Distortion-free holding of raw part or uneven workpiece, because positive-locking clamping by means of fixed and mobile pole extension
Underlining of workpieces no longer necessary
No damage to the magnetic clamping plate if there are breaks on the workpiece
Slight adjustment of the magnetic holding force to thin workpieces or when aligning by means of the adhesion power regulation

Data sheet Control units Accessories

The permanent magnet system is moved inside when it is switched on and off, e.g. by operating a lever. It consists of a pole plate and a magnet body. When switched off, the pole plate is not exactly congruent with the magnet body, which leads to a magnetic short circuit (Figure 1). When switched on, the pole plate is congruent with the magnet body and the magnetic circuit can only be closed via the workpiece (see Figure 2).

Features:

Permanent magnets work without electricity, are mobile and reliable.
The size and adhesive force of a magnet system are limited by the internal mechanical friction.
A permanent magnet can be demagnetized by strong external magnetic fields or a temperature of more than 80°C.

Minimizing setup times by quick and easy clamping
Increased tool life by low-vibration clamping
5-sided machining

All Assfalg electro-permanent magnetic chucks are equipped with a maximum of poles in the relationship to the size of the chuck.

If you review a price comparison, it is important for you, to analyze the clamping force of the chuck, because not the size of the chuck is important for the clamping force but the numbers of the poles are crucial for the clamping force of the magnetic chuck. It can mean that you will have bigger price differences by the same size of the magnetic chucks.

Do you have any questions? We will be happy to advise you individually.

You have already informed yourself about magnetic clamping, but for you are the advantages of the different Electropermanent Square Pole Chucks not yet understandable? Before you decide for a Electropermanent Magnetic Chuck, represented on the market, please ask you the following questions:

Which chuck is for your individual application advantageous?
Which special technical characteristics have the different electropermanent magnetic chucks?
Which material do you work?
Which thickness have your work pieces and how big are they?
How often is the processing of workpieces?

The electropermanent magnetic chuck from Assfalg Magnaslot is ideally suited for clamping of small and big work pieces for milling operations. Pole extensions, easily fixed on the surface of the magnetic chucks, guaranted a clamping without distortion even for uneven work pieces. The full steel body, patented and only available by Assfalg-magnets, offers an ideal protection against external influences like hot chips and coolant. If you work very big work pieces, you will get optionally a 4 channel controller, making a simultaneous switching of max. 4 magnetic chucks.

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