Standard_Parts_Catalogue

Page 259 | 1.3 Adjusting with Handwheels and Cranks GN 520.4 Handwheels Plastic, Bushing / Retracting Mechanism Steel 2 Bore code B Without keyway K With keyway 4 Type D With retractable handle The handle in the handwheels GN 520.4 is locked in a conical bore in the operating position. For reversal, it must first be pulled from the cone in axial direction. A pressure spring holds the handle in both positions. When swung out, it automatically engages again. This standard replaces the previous handwheels GN 520.3. see also... • Countersunk Washers GN 184 (for Axial Fixing) → Page 1090 • Handwheels with Retractable Handle GN 521.3 (Plastic, Bushing / Retracting Mechanism Steel) → Page 260 • Handwheels with Retractable Handle GN 524.3 (Plastic, Bushing / Retracting Mechanism Steel) → Page 263 Information • Plastic Duroplast (Phenolic PF) - - Reinforced - - Temperature resistant up to 110 °C - - Black, shiny finish - - Flash mark polished • Hub bushing Steel, blackened finish • Retractable handles - - Plastic, Duroplast Black, shiny finish - - Retracting mechanism Steel, blackened • Keyway P9 DIN 6885 Page 1 → Page 2078 • Cross Holes GN 110 → Page 2080 • ISO Fundamental Tolerances → Page 2151 • Plastic Characteristics → Page 2158 • RoHS Specification • Without bore • With safety-retractable handle (swivelling back automatically) On request iF product design award 1 d 1 2 Bore code 3 d 2 4 Type How to order 1 2 3 4 GN520.4-200-K20-D 1 3 d 1 d 2 H7 Bore d 3 d 4 d 5 d 6 d 7 b l 1 l 2 l 3 l 4 r Ø Handle 100 10 24 22 35  54 39 26 12 33,5 51 56  37 22 125 12 32 26,5 44  70 46 28 15 38 57 56  48 22 150 14 32 26,5 50  80 48 30 15 38 60 65  57 23 175 16 40 33 55  90 56 32 15 43 66 80  68 26 200 20 40 33 55  90 60 32 15 43 68 90  76,5 28 225 20 49 40 66 110 66 33 15 44,5 71 90  88 28 250 22 49 40 66 110 70 36 15 44,5 75 90 100 28 300 26 58 58 94 148 82 36 18 56 87 90 124 28 Original design VDN.FP +IR