Fig. 2 Model 1S, 2/S, 3/S • Same as above except: • Install S-Type axial screws on flanged hub or flanged plate. • Mount the element on the cylindrical hub and fasten with radial screws. Torque these screws to the proper value. Do not forget to place a drop of oil or grease under the screw head before fastening. Also, make sure the hub is set on the shaft with the proper shaft engagement. Normally, the end of the shaft is flush with the end of the hub. Tighten set screws. • Pilot the hub assembly onto the flanged hub or adapter plate. Models 1, 2 and 3 • Place hubs on shafts, or the adapter plate onto the flywheel. If a key is used, make sure it does not extend past the end of the shaft. • Attach rubber element to the flanged hub (or adapter plate) with the axial screws. Hand tighten. (Be sure to place a drop of oil or grease under each screw head to reduce friction and twisting of the element at final assembly). • Align equipment so the cylindrical hub in the other shaft is placed into the centre of the element. Install the radial screws. • Tighten all axial screws first, then all radial screws to the proper torque shown above. Tighten set screws. DELFLEX LF Torsional Alignment and assembly notesAfter assembly, the coupling (equipment) should be aligned carefully for long service life. Naturally, the higher the speed, the greater the care should be in alignment. In Model 2, alignment can easily be checked with a straight edge. The outer diameter of the flanged hub must be flush with the element diameter where the radial screws are placed. Check each position for proper alignment. InModels 1 and 3 the distancemust bemeasured at each axially bolted point of the rubber element, and should be set as accurately as possible to the value "Z" shown in the table on this page. In models that use the S-Style screws, alignment is normally not required. The parallel and angular misalignment is small when the equipment is pilot assembled. HTRAlignment values (mm) “S" Style-assembly lightly grease radial axial lightly grease radial axial Standard assembly Size Dimension S Dimension Z 1 2 13 2 4 22.5 4 4 27.5 8 4 30 12 4 31 16 6 40 22 6 40 25 6 42.5 28 6 42.5 30 8 50 50 8 50 80 4 52.5 90 8 67.5 140 8 67.5 250 8 90 www.jbj.co.uk/torque-limiting-couplings.html 31 #DriveLineHarmony Torque Limiting Couplings LF Torsional Coupling Supplement
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