TORSIONAL COUPLINGS LK TORSIONAL COUPLING SYSTEM 28 Misalignment As the coupling is torsionally very stiff, it is also very stiff in the radial direction. It is suitable for accurately aligned drives, i.e. flange mounted. The coupling is able to compensate for the small radial and angular misalignments that must normally be expected on flange mounted drives. In the axial direction, the hub can move freely and be located a few millimetres from the ideal axial position, even to the point of protruding out of the flange. However, for highly loaded couplings, it is recommended that the dogs be completely engaged at all times. Mounting In most cases, the diameter of the hub is smaller than the centre locating diameter of the pump flange. The hub passes through the bore in the flange which connects the pump with the flywheel housing. The diameter of the hub is always a little smaller than the normal size of the coupling. The rotation diameter of the hub for LF-K-100 is<100mm; it will pass through the bore in the pump mounting plate provided it is 100mm in diameter or greater. In this case the installation can be carried out as follows: 1 ) Bolt the coupling flange onto the flywheel. 2 ) Bolt the pump mounting plate onto the flywheel housing. 3 ) Fit coupling onto the pump shaft and secure 4 ) Offer up the pump to engage the coupling and the pump in the pump mounting plate. For the occasional case where the hub diameter is larger than the bore in the pump mounting plate, the installation should be carried out as follows: 1 ) Bolt the coupling flange onto the flywheel. 2 ) Bolt pump mounting plate to pump. 3 ) Fit coupling hub onto the pump shaft and secure. 4 ) Offer up the pump and mounting plate so that the coupling engages and locate the pump mount plate in the flywheel housing. Bolt complete assembly to flywheel housing. Axial securing of hub The hub can adjust its axial position freely as there is no axial stop. Therefore the hub has to be secured onto the pump shaft axially. For best results use our proven L-Loc clamping system. For light drives where the pump shaft has a shoulder it can be sufficient to clamp the hub against the shoulder using a bolt and washer fastened onto the end of the pump shaft, provided it has a tapped hole. #DriveLineHarmony www.jbj.co.uk/torsional-couplings.html
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