Top Grand Complete Rotor Shaft For NR12 / S Marine Diesel Turbochargers

Design features of NR12 / S Marine Diesel Turbochargers:

• Top Grand Complete Rotor Shaft For NR12 / S type is one of the parts for NR series Marine Diesel Turbochargers
• It is radial-flow turbocharger and consists of single-stage radial-flow turbine and centrifugal compressor;
• NR turbochargers adopts inboard plain bearing, uncooled casings and lubricated by the engine's lube oil system.
• Suitable for a wide variety of fuels:heavy fuel, diesel oil, biofuel and gas
• Simple and durable design;
• widely used in ship building, locomotive, land power station and petroleum drilling industries．

Types of NR series marine diesel turbochargers:

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How the rotor shaft works in Marine Diesel Turbochargers?

The turbocharger rotor shaft / rotor assembly / rotor complete consists of compressor impeller, blade shaf/turbine shaft / rotor shaft and partition wall complete.

The turbocharger rotor shaft is equipped with components such as a compressor and a turbine impeller, and has a complicated structure and a large weight. If the ship is parked for a long time, the turbocharger rotor will be bent and deformed due to the long-term non-operating self-weight, which will break the matching gap between the rotor and the casing, the gas seal and the casing, and the rotor will be lost. In severe cases, the rotor is difficult to rotate and the friction is severe. A large centrifugal force is generated during operation to cause the supercharger to vibrate.

Therefore, if the ship is suspended for a long time, attention should be paid to the agement of the supercharger to prevent deformation of the rotor.

After a period of operation, the turbocharger is deformed or broken due to severe carbon deposits on the turbine blades; the compressor impeller, blade deformation or damage will change the rotor mass distribution, changing the original center of gravity of the rotor and destroying the original dynamic balance accuracy of the rotor produces severe vibration and the work is not stable.

What is Marine Diesel Turbochargers?

The marine diesel turbocharger, also known as exhaust gas turbocharger, is the main equipment in the diesel engine boosting system. It consists of a single-stage exhaust gas turbine and a centrifugal compressor. They are mounted on the same shaft to form the moving part of the marine turbocharger/exhaust gas turbocharger - the rotor. The function of the marine turbocharger/exhaust gas turbocharger is to use the diesel exhaust energy to drive the turbine to drive the compressor on the coaxial to increase the air pressure into the cylinder, so that the diesel engine power is greatly improved. The exhaust turbocharger approximately doubles the power of the diesel engine, but its weight is only increased 10%.

Marine Turbo factory, founded in 1999, is a professional ufacturer for marine turbocharger replacement spare parts and components.

The Marine Turbo workshop, occupying more than 18,000 square meters, is located in Yangtze river delta region which is close to the international metropolis, Shanghai China. The company owns more than 100 units of ufacturing equipment and testing instruments, such as CAD, precision casting production line, four axis and five axis machining center, three coordinate measuring instrument, CNC lathe milling machine, metal cutting equipment with nondestructive flaw detection, etc.

With the advanced mechanical processing technology, Marine Turbo is fully in accordance with the strictly production process control method of military products to age the production line in the workshop in order to ufacture the high quality of turbocharger replacement parts. In the mean time, Marine Turbo factory introduce and absorb the latest technology at home and abroad that the factory independently develops the various types of turbocharger components and which are applied for engineering machinery and marine auxiliary machinery, such as the turbine blades, turbine shaft, compressor impeller, diffuser, oil pump, nozzle, etc.

The Company has also supplied nearly hundred kinds of engine parts for US client's yatchs production, and several creative technologies have been recorded in our domestic marine ufacturing industry.

In order to provide the reliable products, the company has passed the ISO9000 Quality agement System certificate in 2001, and also some of the products are certificated by CCS (China Classification Society Certification) and RINA Certificate.

Satisfying customers with supreme quality and reliable services for marine turbocharger replacement parts is the aim across the whole Marine Turbo company.

Marine Turbo Keep a Large Inventory for Quick Delivery

Marine Turbo has more than hundres of types of replacement parts for customers to choose quickly. Among them, 90% of the product models Marine Turbo has the inventory, can meet the turbocharger overhauling, maintenance and repair needs for various brands with a quick response and reasonable price.

According to the feedback and sales situation of customers seasonally and yearly, our company analyzes and make the turbocharger replacement parts’ production plan, in order that our company can keep the inventory for common spare parts all the time, while as for some non-common parts, we will keep the long-term inventory of semi-finished products.

The purpose to build our large inventory is to save time for customers’ waiting for repairing spare parts as much as possible, so that to help customers resume operations as soon as possible, and ultimately improve the effectiveness of competition.

We recommend that customers can make the plans to establish a small stock for your own to minimize the time lost as much as possible.

Marine Turbo look for the professional local distributor for turbocharger replacement parts around each country of the world.

Marine Turbo products has sold to all over the world. From the feedback from various places, we have been highly recognized for the quality of our products and delivery time. However, in order to better serve the local market, we are looking for professional turbochargers aftermarket parts distributors in different countries of the world, so as to establish a local inventory chain through cooperation and assessment for a certain period of time.
The aim to build local chain is to enable end users to shorten the waiting time for the turbocharger spare parts as much as possible, then to save costs and improve the market competition effectiveness for end users.