www.jbj.co.uk/couplings.html #DriveLineHarmony ® SIT-LOCK 15 Internal Locking Device - Self-centring 33 Reusing the locking device When reusing the locking device, check all the surfaces are clean and show no obvious signs of deformation or seizing. Clean and oil all surfaces and threads. Check the screws have not been deformed. Oil the screws and assemble the locking device as originally supplied. M Screw tightening torque Nm s M Transmissible torque Nm t F Transmissible axial force kN ax P Pressure on shaft N/mm² w P Pressure on hub N/mm² n IMPORTANT: The screw tightening torque M can be reduced by 40% of the value indicated in the table. s M , F , P , P decrease proportionally. t ax w n For further information and larger diameters or dimensions different to those in the table, please contact the jbj Techniques Limited technical office, telephone: +44 (0)1737 767493 or email: info@jbj.co.uk ® SIT-LOCK 15 internal locking device - self-centring Dimensions [mm] Clamping screws DIN 912 12.9 Values with tolerances for shaft h8/hub H8 d x D H2 H1 H Number Type Ms [Nm] Mt [Nm] Fax [kN] Pw [N/mm²] Pn [N/mm²] 5 x 16 13,5 11 10,5 3 M2,5 1,2 8 3 155 50 6 x 16 13,5 11 10,5 3 M2,5 1,2 9 3 131 50 6,35 x 16 13,5 11 10,5 3 M2,5 1,2 10 3 124 50 7 x 17 13,5 11 10,5 3 M2,5 1,2 11 3 112 45 8 x 18 13,5 11 10,5 3 M2,5 1,2 12 3 98 45 9 x 20 15 13 12,5 4 M2,5 1,2 19 4 98 45 9,53 x 20 15 13 12,5 4 M2,5 1,2 20 4 93 45 10 x 20 15,5 13 12,5 4 M2,5 1,2 21 4 88 45 11 x 22 15,5 13 12,5 4 M2,5 1,2 23 4 80 40 12 x 22 15,5 13 12,5 4 M2,5 1,2 25 4 74 40 14 x 26 20 17 16,5 4 M3 2,1 40 6 66 35 15 x 28 20 17 16,5 4 M3 2,1 43 6 62 35 16 x 32 21 17 16,5 4 M4 4,9 85 11 107 55 17 x 35 25 21 20,5 4 M4 4,9 90 11 80 40 18 x 35 25 21 20,5 4 M4 4,9 95 11 77 40 19 x 35 25 21 20,5 4 M4 4,9 101 11 73 40 20 x 38 26 21 20,5 4 M5 10 173 17 112 60 22 x 40 26 21 20,5 4 M5 10 191 17 102 55 24 x 47 32 26 25 4 M6 17 294 24 105 55 25 x 47 32 26 25 4 M6 17 306 24 104 55 28 x 50 32 26 25 6 M6 17 514 37 140 80 30 x 55 32 26 25 6 M6 17 550 37 130 70 32 x 55 32 26 25 6 M6 17 587 37 122 70 35 x 60 37 31 30 8 M6 17 856 49 120 70 38 x 65 37 31 30 8 M6 17 929 49 110 65 40 x 65 37 31 28 8 M6 17 978 49 105 65 42 x 75 44 36 35 6 M8 41 1.424 68 120 70 45 x 75 44 36 35 6 M8 41 1.525 68 115 70 48 x 80 44 36 35 8 M8 41 2.169 90 145 85 50 x 80 44 36 35 8 M8 41 2.260 90 140 85 Using SIT-LOCK® 15 to lock a hub while axially locking a bearing. For further information, please contact jbj Techniques Limited.
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