Marine News

  What is stern shaft sealing device? Stern shaft sealing device  is a key component used to prevent water intake in ship stern, usually by sealing ring, sealing gasket, sealing ditch and other parts. Its main function is to prevent oil and water from entering the cabin through the sealing effect. The stern shaft sealing device  can be divided into the front sealing device and the back sealing device, the front sealing device is mainly used to isolate the stern shaft tube and the cabin to prevent the leakage of lubricating oil; The rear sealing device is mainly used to ensure the isolation of stern shaft tube and outboard sea water to prevent the internal leakage of outboard sea water and the external leakage of oil in stern shaft tube. The rear sealing device  is one of the key components in the design and operation management of the  propulsion system  of modern large and medium-sized ships. Once the failure occurs, the light will leak in the sea water, a...

  What is a stern tube? A  stern tube  is a tubular structure in a ship  shaft  used to support and protect the stern shaft. The task of the stern tube device is to support the stern shaft or propeller shaft and allow it to reliably vent out of the ship, while preventing a large amount of outboard water from leaking into the ship and oil leakage. The stern tube  is generally welded directly on the hull structure in the form of cast steel parts, and the bearings are pressed forward and back after processing or using the flexible pouring type of finished products, and then the propeller shaft is installed in the stern shaft tube. The operation and load bearing of the propeller shaft are borne by the stern shaft tube and its bearing. Stern tube is an important part of Marine propulsion system, its manufacturing process and material quality directly affect the performance and safety of the ship. Therefore, there are very high requirements for the manufacture an...

  Parameters of DMB rudder seal DMB rudder seal  printle sealing apparatus is compact in structure and easy to be maintained.It is suitable when the axial size is small. Technical parameters specifications A B C E H T E Weight(Kg) 130 101-130 250 225 6-M12x35 50 10 2-M8x20 9 160 131-160 280 255 6-M12x35 50 10 2-M8x20 11 190 161-190 310 285 6-M12x40 52 10 2-M8x20 12 220 191-220 358 324 6-M12x40 52 10 2-M10x25 16 260 221-260 404 370 6-M12x40 55 10 2-M10x25 19 300 261-300 444 410 6-M12x40 55 10 2-M10x25 20 specifications A B C E H T E Weight(Kg) 80 65/70/75/80 200 170 4-M10x45 56 10 4-M10x25 13 100 85/90/95/100 220 190 4-M10x45 56 10 4-M10x25 15 Note: the dimensions in this table are for reference only Besqo Marine offers a wide range of  Host Device . For more information,   leave message  or send an email to  sales@besqo.com .

  What is a hydraulic coupling? A hydraulic coupling  is a device that uses  hydraulic power  to connect two axes and transmit torque. It usually consists of an inner and outer sleeve, a spring, a sealing ring and a liquid. ​ The working principle of the  hydraulic coupling  is that when the two shafts rotate, the inner and outer sleeves drive the liquid to rotate together. The fluid enters the inlet of the hydraulic coupling and forms a layer of hydraulic pressure in the casing. This hydraulic pressure connects the inner and outer sleeves together so that they achieve the effect of coupling.  At the same time, hydraulic couplings provide additional connection and sealing by means of springs and sealing rings. The spring makes the coupling have a certain elasticity, which can absorb and relieve the shock and vibration between the shafts. The sealing ring prevents liquid leakage and ensures stable operation of the hydraulic coupling. Hydraulic couplings...

  What is Marine intermediate shaft and drive shaft? Marine intermediate shaft and drive shaft  are important components of Marine transmission system, each of which has different functions and characteristics. ​ Marine intermediate shaft  is usually located between the main motor and the gear base, or between the main motor and the universal shaft, which plays the role of connecting and transmitting power. Intermediate shaft is a cylindrical object worn in the middle of the bearing or the middle of the wheel or the middle of the gear, generally in the shape of a metal rod, and each segment can have different diameters. In order to ensure its stiffness and strength, the whole shaft body is often forged during manufacturing, but for some small ships, the torque transmitted is smaller, and round steel with similar materials is also processed by machine tools. The length of the intermediate shaft depends on the type of ship and the design of the cabin, usually a solid shaft,...

  What are the types of Marine couplings? Couplings  are mechanical parts used to connect two axes (drive shaft and driven shaft) in different mechanisms to rotate together to transfer torque. The two axes cannot be separated when the machine is running, and the two axes can only be separated after the machine is parked and the joint is removed. ​ Flange coupling  ( flange  coupling)  : the advantages of this coupling are low cost, simple overall structure, can transmit large torque, there can be no relative displacement between the two axes, no buffer. It is suitable for use in low speed, no impact, shaft rigidity, small and medium-sized work sites. Elastic pin coupling:  This kind of coupling in operation, torque is passed to the driven shaft through the two half couplings and the nylon pin in the middle. The advantage is that the baffle can be fixed by screws on the outside of the half coupling, and the anti-fall performance is good. In addition, it also...

  What Is A Marine Coupling? Marine coupling  is an important part of the Marine transmission system, which is mainly used to connect and transfer the power of the  Marine engine . It is able to convert the rotation of the engine into the power of the thrusters to propel the ship forward. There are many types of  Marine couplings , including rigid couplings and flexible couplings. Rigid coupling uses a rigid joint to connect the engine axis and propeller axis to each other, transferring power is stable and reliable, but the disadvantage is that it can not compensate the axis error, easy to produce vibration and noise. The flexible coupling adopts a flexible connection mode, which can compensate the axis error and prevent vibration and noise, but the stability is poor when transmitting power. The functions of  Marine couplings  include power transmission, compensation for axis errors and separation protection. In terms of power transmission, the coupling is ...