Standard_Parts_Catalogue

Page 906 | 3.1 Indexing, Locking, Blocking with Pins and Ball-Shaped Elements GN 817.8 Indexing Plungers Steel / Stainless Steel Removable, with or without Rest Position 1 d 1 2 l 1 (indexing length) 3 Type 4 Material How to order 1 2 3 4 GN817.8-8-12-B-NI 3 Type B Without rest position, without lock nut BK Without rest position, with lock nut C With rest position, without lock nut CK With rest position, with lock nut Indexing plungers GN 817.8 have been designed such that special versions of the indexing pins can also be made economically in smaller unit quantities. If required, the indexing pins can be machined or made by the user as shown in the drawing above. They are assembled with a countersunk screw and can therefore be assembled several times. All parts are supplied in a non-assembled set. The indexing plungers type C / CK are 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... • List of Indexing Plunger Types → Page 884 ff. • Positioning Bushings GN 412.2 / GN 412.4 → Page 954 • Distance Bushings GN 609.5 (to Limit the Thread Length) → Page 952 Information • Steel, blackened ST - - Guide - - Lock nut • Stainless steel NI - - Guide, AISI 303 - - Lock nut, AISI 304 • Plunger pin Stainless steel AISI 303 • Countersunk screw DIN 7991 Stainless steel AISI 304 • Knob - - Plastic (Polyamide PA) - - Black, matte finish • Load Rating Information → Page 2132 • ISO Fundamental Tolerances → Page 2151 • Plastic Characteristics → Page 2158 • Stainless Steel Characteristics → Page 2166 • RoHS Specification 4 1 2 d 1 Pin −0,02 −0,05 Bore H7 l 1 Indexing length l 2 Max. stroke d 2 d 3 d 4 −0,02 −0,1 d 5 k l 3 l 4 l 5 l 6 l 7 l 8 ±0,1 t A/F Spring load in N ≈ Initial End  7 6 8 M 12 x 1,5 23 5   M 3 20 20 48 22 6 31  17,6 7  14 6,5 19  7 9 11 M 12 x 1,5 23 5   M 3 20 20 48 22 6 27,5 21,1 7  14 6  25  8 8 10 M 16 x 1,5 28 6   M 4 24 25 58 26 8 39  20,6 8  17 8,5 26  8 12 14 M 16 x 1,5 28 6   M 4 24 25 58 26 8 34  25,6 8  17 8,5 28 10 12 14 M 16 x 1,5 28 7,5 M 4 24 30 58 26 8 39,2 25,4 8  17 9,5 38 12 15 17 M 20 x 1,5 33 9   M 6 28,5 35 71,5 33 10 47,3 31,3 13,5 22 11,5 40