IFJ_052021_Book 1.indb Ken Norberg November 3, 2021 58 Views Figure 1. 1-1 roller coupling, 1-2 large shaft, 1-3 bearing sleeve, 1-4 front bearing, 1-5 oil retaining ring, 1-6 oil return plate, 1-7 O-ring, 1-8 O-ring, 1-9 O-ring, 1-10 high water base coil. Figure 1. 1-1 roller coupling, 1-2 large shaft, 1-3 bearing sleeve, 1-4 front bearing, 1-5 oil retaining ring, 1-6 oil return plate, 1-7 O-ring, 1-8 O-ring, 1-9 O-ring, 1-10 high water base coil.