Sit-lock Cal 3 (en)

Transcript

www.sitspa.com SIT-LOCK® 3 - Self-Centering Low Profile requested. It is recommended for mid-high torques and is self centering. During the installation of the unit no axial displacement of the hubs on the shaft occurs. Ø Ø Locking assembly with single taper design. Consists of two tapered rings and a spacer. It has minimum overall dimensions in virtue of the reduced thickness of the cones. SIT-LOCK® 3 is suitable for the applications where small hubs are Installation Carefully clean contact surfaces of shaft and hub. Then, lightly oil both surfaces with standard mineral oil. Position the SIT-LOCK® on the shaft and into the hub machined bore. Align them as required by the application. Gradually and uniformly tighten the locking screws to the tightening torque (Ms). You must tighten the screws in diametrically opposite sequence in stages: • hand tighten the screws until the surfaces are in contact • carefully check the position of the hub on the shaft • tighten the screws to half the value of the tightening torque (Ms) stated in the catalogue • repeat the operation until the tightening torque is reached using the dynamometric screw-driver • check every locking screw to insure it has been tightened to the specific tightening torque Do not use lubricant like “Molykote” or molybdenum disulfide based oils. Removal Gradually loosen all locking screws. Remove and transfer the screws into the releasing tapped holes and tighten them until the SIT-LOCK® is released. Note: To reuse the locking element, carefully oil the screws and the conical surfaces, then follow installation instructions. Concentricity For self-centering locking assemblies the clamping element has a centering effect and the concentricity error can be considered 0.02-0.04 mm. Maximum allowable roughness Rt 16 µm Maximum recommended tolerance shaft h 8 - hub H 8 112 Direct Drives www.sitspa.com SIT-LOCK® 3 Dimensions [mm] Performances dxD H H0 H1 H2 D1 MT [Nm] 6 x 14 7 x 15 8 x 15 9 x 16 10 x 16 11 x 18 12 x 18 13 x 23 14 x 23 15 x 24 16 x 24 17 x 26 18 x 26 19 x 27 20 x 28 22 x 32 24 x 34 25 x 34 28 x 39 30 x 41 32 x 43 35 x 47 38 x 50 40 x 53 42 x 55 45 x 59 48 x 62 50 x 65 55 x 71 60 x 77 65 x 84 70 x 90 75 x 95 80 x 100 85 x 106 90 x 112 95 x 120 100 x 125 110 x 140 120 x 155 130 x 165 10 12 12 14 14 14 14 14 14 16 16 18 18 18 18 25 25 25 25 25 25 32 32 32 32 45 45 45 55 55 55 65 65 65 65 65 65 65 90 90 90 18,5 22 22 23 23 23 23 23 23 29 29 31 31 31 31 38 38 38 38 38 38 45 45 45 45 62 62 62 72 72 72 86 86 86 86 86 86 86 114 114 114 21 25 25 26 26 26 26 26 26 36 36 38 38 38 38 45 45 45 45 45 45 52 52 52 52 70 70 70 80 80 80 96 96 96 96 96 96 96 128 128 128 24 29 29 30 30 30 30 30 30 42 42 44 44 44 44 51 51 51 51 51 51 58 58 58 58 78 78 78 88 88 88 106 106 106 106 106 106 106 140 140 140 25 27 27 28 28 32 32 38 38 45 45 47 47 49 50 54 56 56 61 62 65 69 72 75 78 86 87 92 98 104 111 119 126 131 137 144 149 154 180 198 208 12 26 30 44 49 54 59 64 69 128 136 193 205 216 227 250 273 284 478 512 546 796 864 910 955 1.891 2.017 2.101 2.600 2.836 3.073 5.254 5.630 8.006 8.507 9.007 11.092 15.012 16.029 17.486 25.257 Pressure [N/mm2] Clamping screws (DIN 912 - 12,9) Fax [kN] pw pn N° Type Ms [Nm] 4 7 7 10 10 10 10 10 10 17 17 23 23 23 23 23 23 23 34 34 34 45 45 45 45 84 84 84 95 95 95 150 150 200 200 200 234 300 291 291 389 180 234 204 208 187 170 156 144 134 189 177 197 186 176 168 110 101 97 129 121 113 108 99 94 90 110 103 99 83 76 70 88 82 102 96 91 100 123 78 72 88 77 109 109 117 117 104 104 81 81 118 118 129 129 124 120 75 71 71 93 88 84 80 75 71 69 84 80 76 64 59 54 68 64 82 77 73 79 98 61 55 69 3 3 3 4 4 4 4 4 4 3 3 4 4 4 4 4 4 4 6 6 6 8 8 8 8 8 8 8 9 9 9 9 9 12 12 12 14 18 12 12 16 M 3 M 4 M 4 M 4 M 4 M 4 M 4 M 4 M 4 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 6 M 8 M 8 M 8 M 8 M 8 M 8 M10 M10 M10 M10 M10 M10 M10 M12 M12 M12 2 4,9 4,9 4,9 4,9 4,9 4,9 4,9 4,9 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 41 41 41 41 41 41 83 83 83 83 83 83 83 145 145 145 Notes: Dimensions representing the total length of the hub are indicative; they are calculated according to the geometric rules. For assemblies requiring larger dimensions, contact our Technical Department. SIT-LOCK® It is possible to decrease the screws tightening torque Ms by up to 40% of the value stated in the table. Consequently, MT, Fax, Pw and Pn will decrease proportionally. MS Screw tightening torque Nm MT Transmissible torque moment Nm Fax Transmissible axial load N pw Shaft pressure pn Hub pressure N/mm2 N/mm2 Direct Drives 113