Standard_Parts_Catalogue

Page 682 | 2.3 Tensioning with Eccentric Cams and Wedge Clamps GN 411.2 Centering Bore Clamps 1 d 1 2 Type How to order 1 2 GN411.2-30,5-K 2 Type K With clamping balls S With clamping segments With centering bore clamps GN 411.2 workpieces can be centrally posi- tioned and clamped from the inside of the bore. They offer the following advantages: - Precise self centering - Repetitive accuracy: ± 0.025 - Accuracy of concentricity: ± 0.05 - Solid and stable clamping through either 3 or 6 contact points on the workpiece - Clamping of workpieces with uneven or irregular surface (such as catings) with type K - Distortion free clamping - Reduced height - Can be fitted in any position - Large adjustable range - Draw-down clamping Information • Steel - - Hardened - - Blackened • Clamping balls / segments - - Hardened - - Plain, tumbled • ISO Fundamental Tolerances → Page 2151 • RoHS Specification • Centering bore clamps GN 411.3, operable from the opposite side respectively for hydraulic or pneumatic operation • Centering bore clamps with 2 clamping elements for clamping tubes On request 1 d 1 d 2 Clam- ping- Ø d 3 d 4 d 5 d 6 h 1 h 2 k  ±0,1 l 1 l 2 l 3 t min. w 1 w 2 Number of clamping elements Clam- ping force in kN 11,7 *  14,2 - M  4 4,3 1,5 - 2,5 3,5 3,9 8,6 6,3 - 0,7 1,3 3  0,5 14,5 18,5 12 M  4 4,3 2    5,5 3,5 4,5 9,8 14,2 5    6 1,2 2,3 3  3,5 18,5 22,5 15 M  5 5,3 2,5 7,5 3    5,5 11,5 16,5 6,2 7 1,2 2,3 3  4   22,5 26,5 20 M  6 6,4 3    6   4    7   14,1 19,6 9    8 1,2 2,3 3  4,5 26,5 30,5 20 M  6 6,4 3    6   4,5 7   14,1 19,8 9    8 1,2 2,3 3  4,5 30,5 38,5 25 M  6 6,4 4    7   4,5 9   14,1 23,2 9    8 2,3 4,6 3  4,5 38,5 46,5 30 M  8 8,4 4    7,5 4,5 11   18   27,2 12   10 2,3 4,6 6  6,5 46,5 54,5 30 M  8 8,4 4    7,5 4,5 11   18   27,1 12   10 2,3 4,6 6  6,5 54,5 70,5 45 M 10 10,5 5    9   5,5 15   23,7 40,6 14   12 4,7 9,2 6  8   70,5 86,5 60 M 12 13   5   10   5,5 17   28,3 46,1 17   15 4,7 9,2 6 10   86,5 102,5 60 M 16 17   5   10   5,5 25   30,3 51,2 21   15 4,7 9,2 6 12,5 * This size is only available as type K.