Installation & Maintenance ® TRASCO ES Zero Backlash Jaw Couplings 4 www.jbj.co.uk/couplings.html #DriveLineHarmony Installation and Maintenance 1. Carefully clean the shafts. 2. Insert the hubs onto shafts being connected. With the M, A and AP versions, be sure to tighten the screws with the Ms torque value given in the catalogue. Be careful with the A and AP versions to tighten the screws uniformly to the recommended torque. 3. Position the element in one of the two coupling hubs. 4. Fit together the two coupling halves, making sure the “s” dimension is properly observed. This must be done to insure proper elastic element function and long service life, as well as to assure the coupling is properly insulated electrically. With the A and AP versions, mounting the hubs can be facilitated by lubricating the shaft contact surfaces with an oil, but do not use molybdenum bisulphide based oils. ® When mounting the TRASCO ES coupling an axial thrust is generated which disappears when the mounting has been completed to avoid putting axial loads on the bearings. Lubrication of the elastic element will reduce the amount of axial force required during installation Note: All rotating parts must be guarded. ANGULAR misalignment PARALLEL misalignment AXIAL movement/misalignment
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