Standard_Parts_Catalogue

Page 255 | 1.3 Adjusting with Handwheels and Cranks GN 521.5 Disk Handwheels Plastic, Bushing / Spindle Stainless Steel 1 d 1 2 Bore code 3 d 2 4 Type How to order 1 2 3 4 GN521.5-125-B12-R 1 3 d 1 d 2 H7 Bore d 3 d 4 d 5 d 6 d 7 b h l 1 l 2 l 3 r Ø Handle Type A Type R 100 10 10 22 20 30 25 27 24 9 22 34   60 39 15,5 125 - 12 26 24 35 28 31 28 11 27 39,5 60 49 18 150 14 14 26 24 38 30 34 32 10 30 44   65 58 22 200 20 20 40 38 50 40 44 39 13 36 53   90 81 25 Disk handwheels GN 521.5 have recessed grips at their back. The cover conceals clamping elements, e.g. countershaft pulleys, as well as protruding and recessed shafts. For mounting, the cover is pushed in by hand. For dismantling, the cover can be raised and taken off by apply- ing moderate pressure in the rim of the cover. see also... • Stainless Steel Countersunk Washers GN 184.5 (for Axial Fixing) → Page 1090 • Disk Handwheels GN 520.2 (Plastic, Duroplast, Hub Bushing Stainless Steel) → Page 258 Information • Plastic Technopolymer (Polypropylene PP) - - Reinforced, shock-resistant - - Temperature resistant up to 80 °C - - Black, matte finish • Hub bushing Stainless steel AISI 304 • Threaded bushing Brass • Cover Plastic, light gray • Revolving handle - - Plastic, Technopolymer (Polyamide PA) Black, matte finish - - Spindle Stainless steel AISI 304 • Keyway P9 DIN 6885 Page 1 → Page 2078 • ISO Fundamental Tolerances → Page 2151 • Cross Holes GN 110 → Page 2080 • Plastic Characteristics → Page 2158 • Stainless Steel Characteristics → Page 2166 • RoHS Specification 2 Bore code B Without keyway K With keyway 4 Type A Without handle R With revolving handle iF product design award Original design VDS+I-SST