Standard_Parts_Catalogue

Page 254 | 1.3 Adjusting with Handwheels and Cranks GN 521 Disk Handwheels Plastic, Bushing / Spindle Steel 1 d 1 2 Bore code 3 d 2 4 Type How to order 1 2 3 4 GN521-150-K14-R 2 Bore code B Without keyway K With keyway 4 Type A Without handle R With revolving handle Disk handwheels GN 521 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 applying moderate pressure in the rim of the cover. see also... • Countersunk Washers GN 184 (for Axial Fixing) → Page 1090 • Disk Handwheels GN 524 (Plastic) → Page 256 • Disk Handwheels GN 520.1 (Plastic, Duroplast, Bushing Steel) → Page 257 Information • Plastic Technopolymer (Polypropylene PP) - - Reinforced, shock-resistant - - Temperature resistant up to 80 °C - - Black, matte finish • Hub bushing Steel, blackened • Threaded bushing Brass • Cover Plastic, light gray • Revolving handles - - Plastic, Technoplymer (Polyamide PA) Black, matte finish - - Spindle steel Zinc plated, blue passivated • Keyway P9 DIN 6885 Page 1 → Page 2078 • ISO Fundamental Tolerances → Page 2151 • RoHS Specification iF product design award 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  80 8 10 -  8 10 18 16   25 19 21  20 8 17 29 45 30,5 16 100 8 10 12 10 12 22 20  30 25 27  24 9 22 34 60 39 18 125 - - - 12 14 26 24   35 28 31   28 11 27 39,5 60 49 18 150 14 - - 14 16 26 24   38 30 34  32 10 30 44 65 58 22 175 - - - 16 20 35 33  44 35 39  36 16 28 49 80 70 24 200 20 - - 20 24 40 38  50 40 44  39 13 36 53 90 81 25 250 - - - 20 - 40 38  57 48 50  43 19 36 60 90 104 25 300 - - - 20 - 40 36,5 72 66 68,5 46 20 44 66 90 124 25 • With revolving handle GN 597.1 → Page 45 • Cover in other colors On request Original design VDS / VDS+I