Quad Extra

Permanent-electro magnetic systems for milling

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Molds and dies

Train and rolling stock

An exclusive system thanks to the latest evolution of the square pole: Quad Extra

The permanent-electro magnetic chucks Quad Extra series provide quick and flexible clamping of a large variety of ferrous parts on milling machines, machining centers and pallets FMS systems. They are powerful, lightweight, compact, easy to install and operate, and give significant immediate advantages.

By operating with vices and clamps the workpiece is never completely free; multiple setups are required to complete the processing cycle.

With Quad Extra the piece is free on 5 sides for machining; the clamping force is distributed uniformly over the entire contact surface without any compression and deformation. This results in lower machining vibrations, better finishes and reduced machine stress.

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Quad Extra: the unique advantages of a patented technology


Quad Extra is based on an exclusive patent: the magnetic area is made of a modular polar plate machined from a solid block, fixed with high resistance screws to the main monoblock construction frame. The clamping surface is made of steel and resin and the “double grid” polar layout allows closer magnetic stitches.

The innovative shape of the magnetic system electro Quad Extra allows for:

  • a high structural rigidity due to the multi-polar plates integrated in the monoblock frame
  • a greater reliability in time thanks to a reduced amount of resin
  • a higher force concentration on the pieces, thanks to the “double-grid” pattern


The innovative HE (High Efficiency) configuration has an arrangement of the magnetic poles for a perfect balance of magnetic zones. This allows the maximum magnetic concentration on the piece, in any position, and makes it easy to find neutral areas where drilling holes can be created for references or stops.

Self shimming and automatic stress release

A combination of fixed and mobile polar extensions allows creation of a flexible magnetic bed that can clamp itself to the workpiece and lock it firmly.

  • Fast and automatic shimming of the workpiece
  • Stress release of pieces of any size
  • Easy contouring and through drilling.

Technical specifications

Model QX HE50Dimensions A (in)Dimensions B (in)Dimensions C (in)Weight (lbs)Poles (n.)Force (Ton**)
QX 305 HE50 10.6219.32110187,2
QX 306 HE50 10.6224.42130249,6
QX 308 HE50 10.6230.721753012,0
QX 309 HE50 10.6235.822003614,4
QX 310 HE50 10.6240.9522404216,8
QX 403 HE50 15.75132240208,0
QX 405 HE50 15.7519.321503012,0
QX 406 HE50 15.7524.422004016,0
QX 408 HE50 15.7530.722655020,0
QX 409 HE50 15.7535.822856024,0
QX 410 HE50 15.7540.9523307028,0
QX 505 HE50 18.519.322003614,4
QX 506 HE50 18.524.422404819,2
QX 508 HE50 18.530.723106024,0
QX 509 HE50 18.535.823507228,8
QX 510 HE50 18.540.9524008433,6
QX 605 HE50 23.619.322404819,2
QX 606 HE50 23.624.423106425,6
QX 608 HE50 23.630.723758032,0
QX 609 HE50 23.635.824409638,4

Discover more about our range of clamping systems

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