MAGNETIC CHUCKS

LEVER ACTUATED MAGNETIC CHUCKS

MANUAL ACTIVATION OF PERMANENT MAGNETS FOR MECHANICAL WORKS

The magnetic chuck with permanent magnet are special equipments that guarantee to fix the metal pieces to facilitate the milling and grinding processing with machine tools. The pieces are fixed by rotating a lever, considerably reducing the set-up times of the parts on the machine bed. Different polarities are used depending on the size of the piece and the type of mechanical processing to be performed.

Fast fixing of the pieces.
Safety during every work operation.
Free work surface.
Flexibility of use.
DISCOVER THE COMPLETE RANGE

Complete Range MAGNETIC CHUCKS

PMNEO

EXTRA STRONG HOLDING FOR MILLING
Polar pitch 11-4 mm., Holding force 150N / Cm2, for heavy milling operations.

Available Products PMNEO
PMNM

PRECISION GRINDING AND ERODING
Polar pitch 1.4-0.5 mm., Holding force 100N / Cm2, for grinding or light milling.

Available Products PMNM
RM

FOR GRINDING, MILLING AND TURNING
Polar pitch 5-8 mm., Holding force 140N / Cm2, for turning operations.

Available Products RM
RF

FOR MACHINING THIN PIECES AND RINGS
Polar pitch 4 / 6-2 mm., Holding force 80N / Cm2, for turning and grinding operations.

Available Products RF
RNF

LOW HEIGHT
Polar pitch 1.5 / 0.5 mm., Holding force 80N / Cm2, for turning and grinding of small parts with thin thicknesses.

Available Products RNF
RS

RADIAL POLARITY
Polar radial pitch, holding force 140N / Cm2, for turning and milling of rings and fifth wheels even at high speeds.

Available Products RS

FAQs

TECHNICAL AND OPERATING
INFORMATIONS

What is a permanent magnetic chuck?

A permanent magnetic chuck uses the flow of permanent magnets to fix parts on which to execute mechanical workings. A mechanical system inside it generates the movement of the magnetic poles and directs the flow externally (ON) or internally (OFF). The switching process generally takes place by means of a lever which, connected to an eccentric shaft, allows the magnet assembly to move.

What is an electro-permanent magnetic chuck?

The permanent-electro system combines the advantages of permanent magnets and those of electromagnets.
An electromagnetic force applied for a minimum time is necessary to energize / orient the internal permanent magnets. Once magnetized, the product remains active with a permanent magnetic force. Similarly, an opposite electromagnetic force is required to deactivate the product. Unlike electromagnets, the product is FAILSAFE and does not heat up over time. Unlike permanent magnetic products there are no moving parts and the forces can be much higher.

How much force can an electro-permanent magnetic chuck generate?

The amount of magnetic flux induced in the workpiece is the factor that determines the clamping force. For optimal locking, the greatest possible magnetic flux must be induced in the workpiece. It means positioning the piece correctly on the north and south poles of the magnetic plane. The anchoring force is proportional to:

  • the square of the magnetic flux density present in the face in contact with the piece.
  • the area of ​​the piece in contact with the magnetic plane, up to the maximum point of its saturation
Density reductions in magnetic flux can occur when the flux encounters magnetic resistance (reluctance). Simple examples can be the air gaps, for air gap we mean the average contact distance between the work piece and the magnetic plane. The main factors that can affect the flow density and the anchoring force of a piece of any size are the following:
  • Contact surface, surface finish, chemical composition, thickness, temperature.
The choice of the correct magnetic equipment must take into account all the factors described.

Will my processing/working system be magnetized?

Usually a cutting tool is made of a magnetically hard material, which means that it is susceptible to magnetism. If the instrument is working inside the magnetic field, it will probably magnetize (even if slightly). Generally, a partially magnetized cutting tool has no performance problems.