Standard_Parts_Catalogue

Page 1760 | 3.7 Connecting, Assembling with Clamping and Connecting Elements 1 d 1 2 Type 3 Identification no. 4 Finish How to order 1 2 3 4 GN278-B50-MZ-2-BL 2 Type OZ Without centring step (smooth) MZ With centering step AV With external serration IV With internal serration 1 d 1 Bore b Swivel width d 2 k l 1 l 2 m s t z Screw location Accessory Recom. hand lever GN 911 for  z l 3 B 20 40  8,5 40  95 40 43 13 20 M8-25 - - B 25 40  8,5 40  95 40 43 13 20 M8-25 63 78 B 30 40  8,5 40  95 40 43 13 20 M8-25 63 78 B 40 65 10,5 65 148 65 70 17 32,5 M10-50 92 - B 42 65 10,5 65 148 65 70 17 32,5 M10-50 78 92 B 45 65 10,5 65 148 65 70 17 32,5 M10-50 78 92 B 48 65 10,5 65 148 65 70 17 32,5 M10-50 78 92 B 50 65 10,5 65 148 65 70 17 32,5 M10-50 78 92 The clamping bore of swivel clamp connectors GN 278 is mechanically machined and designed for GN 990 or DIN 2391, DIN 2395 and DIN 2462 construction tubes. At the screw location z , the socket cap screw reduces the bore cross- section for clamping. For clamping without tools, the socket cap screw can be replaced by an adjustable hand lever GN 911 listed in the table as accessory. Swivel clamp connectors GN 278 can be combined with GN 272, GN 274 or GN 276 swivel clamp connectors to swivel clamp connector joints. see also... • Construction Tubes GN 990 → Page 1835 • Swivel Clamp Connector Joints GN 288 (Assembly of GN 276 with GN 278) → Page 1772 Information • Aluminum - - Powder coated Black, RAL 9005, textured finish SW - - Plain, matte shot-blasted BL • Socket cap screws DIN 912 Stainless steel AISI 304 • Hexagon nuts DIN 985 Stainless steel AISI 304 Self-locking via polyamide ring • Stainless Steel Characteristics → Page 2166 • RoHS Specification 4 • Adjustable Hand Levers GN 911 → Page 1784 Accessory GN 278 Swivel Clamp Connectors Aluminum 3 Identification no. 2 With stainless steel socket cap srew DIN 912