Hygienic_Design

Page 37 | Highlights - Standard Parts in Hygienic Design GN 7607 Wipers Elastomer, Hygienic Design When used in hygienic areas, wipers GN 7607 can be used to seal axially or radially moving components with a cylindrical cross-section against their bearing position. With their specially shaped sealing lip, the wipers prevent the formation of dead spaces where dust can accumulate. Commercially available wipers are not suitable for this purpose due to a 45° chamfer on the inner edge of the sealing lip. All standard parts equipped and delivered with wipers GN 7607 are listed in the table. For replacement, the corresponding wipers can be ordered individually. As delivered, or unassembled, the wipers have the “actual dimensions” as stated in the table. To guarantee a secure fit and a reliable seal, the specified installation space must be provided at the bearing position. This ensures that the wiper undergoes the necessary deformation during installation. All surfaces in contact with the wiper should have a minimum surface quality of Ra 0.8 μm. Information • Thermoplastic polyurethane TPU - Blue - Temperature resistant -20 °C to +110 °C - FDA compliant - Hardness 95 ±5 Shore A 95 • ISO Fundamental Tolerances Main Catalogue Page 2151 • Elastomer Characteristics Page 38 • RoHS Specification 2 3 1 d 1 2 Material 3 Hardness How to order 1 2 3 GN7607-16-TPU-95 1 d 1 h9 d 2 H9 d 3 H9 r max. d 1 d 2 d 3 d 4 s Nominal dimensions - Installation space Actual dimensions - Wipers, unassembled Suitable for 12 18 20 0,4 11,2 18,2 20,2 12,6 6,8 GN 19 / GN 20 14 20 22 0,4 13,2 20,2 22,2 14,6 6,8 GN 1150 16 22 24 0,4 15,2 22,2 24,2 16,6 6,8 GN 19 / GN 20 / GN 8170 20 26 28 0,4 19,3 26,3 28,3 20,7 6,8 GN 19 / GN 20 / GN 1150 24 30 32 0,4 23,3 30,3 32,3 24,7 6,8 GN 19 / GN 20