stern tube lubrication systems- oil-lubricated stern tubes

Different Types of Stern Tube Seals

2020-8-15Different Types of Stern Tube Seals Arguably one of the most critical shipboard systems is the seal which keeps sea water out and allows the propulsion shaft to continue spinning the Stern Tube Seal Without it as soon as the ship was launched water would travel up the stern tube or through the transom directly into the ship and it would sink

Oil lubricated sterntube bearing sterntube seals

2020-7-13Sterntube bearings – Oil-lubricated white metal bearing usually consists of two bushes pressed into a stern-tube Water lubricated bearings use only seawater for lubrication thereby they eliminate any risk of oil pollution from the sterntube

The complete stern tube and sealing system (2): Stern

The stern tube is installed at the stern of the ship and carries the sliding bearings that are used to support the propeller shaft The stern tube is filled with a lubrication medium and provides room for needed piping for example oil lines temperature sensors and the Supreme Ventus system Seals are installed at the aft and forward end of the stern tube

COMPAC SEAWATER LUBRICATED STERN TUBE BEARING

2019-3-27lubrication Thordon's COMPAC stern tube bearingsystemisasimple reliableand oil-freesystem eliminate stern tube oil as a potential pollutionsource GOODFORTHESEA GOODFORBUSINESS GOODFORLIFE control and monitoring systems to allow operation in an unmanned machineryspace

How to Lubricate a Boat Steering Cable

Salt spray or water will eventually penetrate the steering tilt tube--the steering link arm where many steering problems begin--and cause rust to begin to accumulate within the tube A little preventative cleaning and lubrication with the right kind of grease can stop this problem before it starts

SIMPLEX SEALS SERVICES

2020-7-7Oil-lubricated sterntube seals Simplex oil-lubricated sterntube seals are designed for oil-lubricated propeller shaft bearings and have two key purposes – firstly to prevent the leakage of oil into the engine room or water and secondly to keep water out of the sterntube

Lagersmit

There are various types of stern tube bearings available for the selection you have to take several factors into consideration One important factor is the intended lubrication medium Oil-lubricated systems are the most common but ship owners also use water-lubricated and grease-lubricated systems

ENVIRONMENTAL ACCEPTABLE LUBRICANT (EAL) LIST

2018-5-9All listed EALs can be used for oil lubricated SIMPLEX stern tube bushes intermediate shaft bearings and seal systems Company name Product name Viscosity cSt 40C Oil type Viton Pod Viton Bio ACT Neptune AW-68 *** 68 H - - Neptune 109 *** 100 G - - Neptune 159 *** 150 G - - BioBlend Bioflo STL 100 100 S x x

Stern Tube Repair Surveys

Oil lubricated stern tube – fitted to the majority of ships and is filled with oil providing white metal bearings with lubrication and cooling and has a seal fitted at either end Water lubricated – fitted to newer ships and those operating within sensitive marine areas as well as military vessels requiring resistance to underwater explosions

Simplex sterntube Seals

Designed to prevent the ingress of water and to avoid lubricating oil leakage the comprehensive range of Simplex seals is rounded off by intermediate shaft bearings sterntube bushes as well as the Simplex FlexiTube and SternTube packages which includes bearings seals and bushes as

Stern bearing housing and arrangement of stern tube

2020-7-13The timber was continuously lubricated by sea water However with the advent of higher tonnage steel ships the size and weight of propellers increased and timber bearings became outdated In most of the modern ships an oil lubrication system with a white metal lined stern tube bearing is used Construction and Working of Stern Tube Bearing

Lagersmit

A stern tube with bearings radially supports the propeller shaft from the main engine The stern tube is a hollow tube which accommodates the bearings the seal boxes and the propeller shaft The stern tube is filled with oil grease or water and forms a barrier between the

oilfilled stern tubes

Similar in operation to oil-lubricated systems Thordon's Thor-Lube Stern Tube Bearing system eliminates the potential legal consequences of stern tube oil leakage pollution as the lubricant leaves no sheen and is categorized as relatively harmless/nontoxic' to fish according to U S EPA test OPPTS 850 1075

US4395141A

A stern tube bearing for vessels is sealed off in a leakproof aft seal asbly which comprises at least one annular chamber between axially spaced sealing elements The annular chamber is filled with a liquid for lubricating the sealing elements The liquid is circulated in a circulation system through a separating tank The head of the circulated liquid is lower than the head of a lubricant in

Ensuring satisfactory aft stern tube bearing lubrication

2020-8-15In recent years an increasing number of costly stern tube bearing failures have been reported across multiple ship segments and sizes These failures have coincided with the increased uptake of environmentally acceptable lubricants (EALs) after the December 2013 introduction of regulations prohibiting the use of mineral oils in all oil-to-sea interfaces on board commercial vessels

SIMPLEX SEALS SERVICES

2020-7-7Oil-lubricated sterntube seals Simplex oil-lubricated sterntube seals are designed for oil-lubricated propeller shaft bearings and have two key purposes – firstly to prevent the leakage of oil into the engine room or water and secondly to keep water out of the sterntube

Dongtai Haipeng Marine Fittings Factory

Dongtai City Haipeng Marine Fittings Factory is professional factory that specializes in designing manufacturing a series of marine Stern Tubes Rudder Bearings and products such as Oil Lubricated Stern Tube Seals Water and oil Lubrication Stern Tube Seals Stern Tube White Metal bearings Rudder Bearings Nylon Bearings Intermediate Bearings Upper Rudder Bearings Lower Rudder

plastic stern tube bearings is briefly reported as an

2014-5-18plastic stern tube bearings is briefly reported as an interim report Based on our experiences obtained from this study we have set up the condemning limits of used oil and started the Preventive Maintenance System for Oil Lubricated Propeller Shaft(Condition-monitoring-based Survey) 1

Mobil Stern Tube Lubricant

Mobil Stern Tube Lubricant is recommended for the lubrication of Cedervall-type stern tube bearings on ships where a high viscosity readily-emulsifying lubricant is recommended by the manufacturer It is also recommended for the lubrication of fin tilting bearings as well as the crux trunnion bearings of Denny-Brown-AEG ship stabilizers and

Oil lubricated sterntube bearing sterntube seals

2020-7-13Sterntube bearings – Oil-lubricated white metal bearing usually consists of two bushes pressed into a stern-tube Water lubricated bearings use only seawater for lubrication thereby they eliminate any risk of oil pollution from the sterntube

Understanding Stern Tube Arrangement on Ships

Bearing placement on a stern tube To function properly a ship's tail shaft must be lubricated Typically ships have lubricating systems consisting of header tanks positioned between six to nine feet above the water line to create pressure that allows the lubricant to flow into the tube Because lubrication is so vital to a ship's ability

oilfilled stern tubes

Similar in operation to oil-lubricated systems Thordon's Thor-Lube Stern Tube Bearing system eliminates the potential legal consequences of stern tube oil leakage pollution as the lubricant leaves no sheen and is categorized as relatively harmless/nontoxic' to fish according to U S EPA test OPPTS 850 1075