Marine Stern Tube
Construction & Design Features:
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Material Composition:
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Primary tube: Cast iron (tapered forward end for removal ease)
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Flanged forward end with doubler plate connection to bulkhead
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Bearing options: Lignum Vitae, Cutlass rubber, or engineered plastics (e.g., Cresylic resin-bonded WA80H)
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Bearing Configuration:
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Traditional wood bearings: Dovetailed into brass bush with end-grain machining
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Modern alternatives:
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Rubber composition (cutlass type)
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High-performance plastics (boundary-lubrication tolerant)
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Lubrication Systems:
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Water Lubrication:
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Minimum bearing length = 4×shaft diameter
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Forced circulation required for bearings >380mm
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Flow monitoring mandatory
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Oil Lubrication:
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Sealed system with contamination safeguards
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Marine Stern Tube Material: steel, stainless steel
Processing methods: forged and lathe machining
Dimensions: designed according to the vessel
Note: The description might be incorrect, please contact us for confirmation.
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