Standard_Parts_Catalogue

Page 1123 | 3.2 Mounting, Positioning, Leveling with Screws, Clamping and Supporting Elements 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 GN 251.2 Setting Bolts with End Limit Switch 1 d 2 l 1 3 Type How to order 1 2 3 GN251.2-M10-25-S 3 Type S Normally open O Normally closed 1 2 d l 1 e k l 2 max. l 3 s M  6 21 11,5 4 3 3,6 10 M  8 25 15   7 4 5   13 M 10 25 19,6 7 4 6   17 Setting bolts GN 251.2 are supplied with a hardened round head which serves as a firm end stop. The two hexagon nuts as lock nuts enable precise positioning. When the workpiece contacts the bolt head, an electrical signal is trans- mitted by means of the end limit switch. By means of the knurled screw, the end limit switch can be installed resp. taken out without having the need to loosen the setting bolt. Operating instructions showing more important technical information are included with every setting bolt. see also... • IP Protection Classes → Page 2153 • Mounting Blocks GN 412.1 → Page 956 Information • Bolt steel - - Property class 5.8 - - Hexagon head hardened to HRC 45 - - Nickel plated • Hexagon nuts steel Nickel plated • End limit switch - - Voltage: 5 ... 24 V DC - - Switching load recom.: 5 ... 10 mA - - Switching load max.: 20 mA DC - - Life expectancy: 3 mio. operations - - Temperature range: -10 °C ... +80 °C - - Load: ≈1 N • Supply cable PVC: - - Ø 3 ; 2-phase, ≈2 meters long - - Max. tensile load 30 N - - Gray for type S (normally open) - - Black for type O (normally closed) • Protection class IP 40 • Strength Values of Screws → Page 2152 • RoHS Specification