GN 51.7 Retaining magnets technical informations Specification with rubber jacket. Steel part, nickel-plated. Rubber jacket, Elastomer (TPE), 80 shore A , black. Standard versions available - Type A: with knob. - Type B: with key ring. Material of the magnet Neodymium, iron, boron NdFeB ND, temperature resistant up to 80C Ball knob Plastic, polyamide based (PA) technopolymer, black, matt. Key ringNickel-plated steel. Features and applications Retaining magnets GN 51.7 are a shielded magnetic system with rubber jacket. The rubber jacket protects sensitive surfaces from being damaged by the magnet and also delivers a higher friction coefficient, resulting in high lateral adhesion forces. Standard Elements Main dimensions Weight Nominal adhesive forces in N d d d h h h Description g 1 2 3 1 2 3 GN 51.7-ND-22-A 22 16 - 6 26 - 35 17 GN 51.7-ND-31-A 31 16 - 6 26 - 75 28 GN 51.7-ND-43-A 43 16 - 5.5 26 - 85 35 GN 51.7-ND-22-B 22 - 20 6 - 13 35 14 GN 51.7-ND-31-B 31 - 25 6 - 14.5 75 25 GN 51.7-ND-43-B 43 - 30 5.5 - 17 85 34