Standard_Parts_Catalogue

Page 938 | 3.1 Indexing, Locking, Blocking with Pins and Ball-Shaped Elements GN 817.3 Indexing Plungers for Precision Locating, Plunger Cylindrical 1 d 1 2 l 1 3 Type How to order 1 2 3 GN817.3-10-24-C 3 Type B Without rest position C With rest position Indexing plungers GN 817.3, together with guide bushings DIN 172 / DIN 179, enable precise positioning. The bushings are used to guide the plunger pin as well as for the indexing bore. The plunger pins and bushings are hardened and ground. Larger guide lengths further increase the precision. Type C is used for such applications where the plunger has to stay in its retracted position. To achieve this, the knob is rotated by 90° degrees after being retracted. A notch keeps the plunger in this position. see also... • Construction and Assembly Instructions → Page 940 • List of Indexing Plunger Types → Page 884 ff. Information • Steel - - Blackened - - Plunger pin hardened and ground • Knob Plastic (Polyamide PA) - - Black, matte finish - - Not removable • Load Rating Information → Page 2132 • ISO Fundamental Tolerances → Page 2151 • Plastic Characteristics → Page 2158 • RoHS Specification 1 2 d 1 Pin h6 l 1 l 2 Stroke l 3 b d 2 d 3 d 4 k l 4 l 5 l 6 Spring load in N ≈ Initial End  6 18  9  9 13 23 4,3 34 23 45 6 25 6 25  6 24  9 15 13 23 4,3 34 23 45 6 25 6 25  8 20 10 10 16 28 5,5 38 26 51 8 27 8,5 28  8 26 10 16 16 28 5,5 38 26 51 8 27 8,5 28 10 24 12 12 16 28 5,5 38 26 51 8 27 9,5 38 10 32 12 20 16 28 5,5 38 26 51 8 27 9,5 38 • Guide Bushings DIN 172 (cylindrical, with collar) → Page 1112 • Guide Bushings DIN 179 (cylindrical, without collar) → Page 1112 Accessory