www.jbj.co.uk/couplings.html #DriveLineHarmony ® SIT Taper Bushing SER-SIT 77 Taper bushing having bore diameters in bold type are made in steel instead of cast iron. M = screw tightening torque. s * = reduced keyway. ** = hexagonal head screw. Assembly and disassembling of SER-SIT® conical bushing » Before fitting the bushing into the pulley, carefully clean the bore and the conical parts. » Fit the bushing into the pulley taking care that the threaded half holes of the pulley are in coincidence of the unthreaded holes of the bushing. » Hand tighten the screws. » Fit the pulley to the shaft after having carefully cleaned it. Position it and tighten the screws alternately. » Disassembly: remove screws and put a new one in the jacking hole tightening it until the hub is released. Note Ensure that the top of the keyway doesn’t get in contact with the bottom of the seat. it is recommended to keep a certain clearance. In applications characterized by strong vibrations, we strongly recommend checking the tightening of the set screws after a few hours of operation under load and, subsequently, at regular time intervals. SiT Spa cannot be held responsible for any consequences deriving from accidental unscrewing of the set screws during use. 16 16 16 16 16 6
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