The permanent magnetic clamping plate SPEF is a high precision plate for use on eroding machines and everywhere where the magnetic field should only be directly on the plate. Magnetic chuck SPEF works with a strong, scatter-resistant ceramic-magnetic system, which creates a field height below 3mm. The clamping force can be changed stagelessly in 2 sectors, the plate is silver brazed and therefore very robust and stiffy. The clamping plate is operated by a removeable Allen key. Finish: - Ceramic-magnetic system - Aluminium body - Pole pitch 2 + 1.5 + 6 mm - Nominal holding force 70 N/cm² - Magnetic field height 2-3 mm - Pole plate wearing limit 5 mm