T- Holset Turbocharger Replacement Parts T- R4-3 Turbine Bearing Complete

T- Holset Turbocharger Replacement Parts T- R4-3 Turbine Bearing Complete

T- Holset turbocharger features:

T- R4-3 turbine bearing complete and compressor bearing belong to T- Holset turbocharger / T- R model, and which has the features as below:

• T- Holset turbocharger are used for medium to heavy-duty diesel engines.
• The turbocharger bearings are lubricated by internal engine lube oil system ;
• The journal bearings are free-floating rotational type;
• Fuel saving;
• Outstanding durability.

Applications:

Diesel marine engines and vehicles.

T- R series turbocharger types:

The function of turbo bearing:

Marine turbocharger / Exhaust gas turbochargers operate at high speeds, high exhaust gas temperatures, high air and exhaust gas flow rates, and high flow rates. Generally, the pressure of the exhaust gas is 0.25-0.45 MPa, and the exhaust gas temperature is 500-600 °C. The speed varies with the size of the Marine turbocharger / supercharger. The maximum speed of the large-sized supercharger is 10000 r/min, and the maximum speed of the small-sized supercharger can reach 40,000~50000r/min. Therefore, the marine turbocharger/exhaust gas turbocharger is a precision machine.

Bearings play an important role in turbochargers. They not only ensure safe and reliable high-speed rotation of the rotor, but also ensure that the rotor is fixed in the correct position. Therefore, the reliability of the bearing is extremely relevant to the normal operation of the supercharger and the diesel engine. Turbocharger bearings are divided into rolling and sliding, marine superchargers mostly use rolling bearings, in addition to thrust bearings. The rolling bearing has a small friction coefficient, generates less heat, and consumes less lubricating oil, which simplifies the lubrication system. Generally, the turbine oil only needs to be provided with an oil pool and a self-contained oil pump. Rolling bearings are easy to assemble and disassemble, have good starting performance and high efficiency. However, due to its service life limit, the specified service life must be replaced after the expiration of the service life.

Turbocharger bearings work under high temperature, high speed and light load conditions to ensure reliable operation of the bearings under working conditions. In addition to ensuring that the structural design, materials and manufacturing of the bearings to meet the requirements, good maintenance management is also critical important.