Standard_Parts_Catalogue

Page 1977 | 3.8 Adjusting, Moving with Guides, Spindles and Ball Rollers 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Construction tubes with locking holes GN 990.1 are used together with locking slide units GN 134.7 / GN 147.7. These are fitted with holes B or countersinks S ordered with specification of the “hole pattern”. The mat- ching hole diameter is described in the table or in the design information of the selected locking slide unit. The hole positions are specified as an absolute dimension starting from the origin. The number of dimension values (m 1 , m 2 , ...) corresponds to the number of holes. The minimum edge or hole distance is specified in the table. see also... • Construction Tubes GN 990 (Square, without Locking Holes) → Page 1835 • Tube End Plugs GN 991 → Page 1836 • Flanged Locking Slide Units GN 147.7 → Page 1974 Information • Aluminum AL Anodized, natural color EL • Stainless steel AISI 304 NI Plain, untreated BL • Sawed cross sections deburred blank, i.e. not surface treated • Stainless Steel Characteristics → Page 2166 • RoHS Specification 4 1 1 Material 2 s 1 3 Length l 4 Finish 5 d 6 m 1 , m 2 , ... (Hole positions) How to order (Construction tube) 1 2 3 4 GN 990.1-AL-V30-1200-EL 6 Hole pattern (With locking hole) 5 6 GN 990.1-B5-50-150-250 2 3 5 s Length I ±0,5 d +0,3 a m 1 w Square Bore (for indexing plungers) Countersink (for spring plungers) Minimum hole distance Minimum edge distance V 25 available in all lengths from 100 to 2000 mm (in 1 mm steps) B 5 S 2,5 10 25 2 V 30 B 5 S 2,5 10 25 2 V 40 B 8 S 4,5 16 38 3 V 50 B 8 S 4,5 16 38 3 GN 990.1 Construction Tubes with Locking Holes Aluminum / Stainless Steel for Locking Slide Units GN 134.7 / GN 147.7