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Well! It's time to get known what the stern tube is. Sometimes, even engineer in charge doesn't know the stern tube construction and it's function algorithm. Stern tube is a complicated machinery, but it will become easer, if you understand how it works. Sealing rings, compressed air system, several oil chambers, there are all of these in stern tube.
Timing for your convenience.
0:20 - propeller shaft sealing
1:10 - COBELCO stern tube
1:14 - three compartments of stern tube (forward seal, oil bath, aft seal)
1:20 - what the oil bath is
1:30 - the stern tube is placed into the special cooling tank
1:57 - forward seal (sealing rings and lubrication system)
2:40 - aft seal (compressed air supply system)
3:59 - compressed air supply unit
5:00 - automatic system of differential pressure
6:37 - stern tube simulator
Links from the video.
• Самое простое обьяснен... - mechanical seal
• Инспекция ЗАБОРТНОГО о... - centrifugal pump overhaul
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