What is the Bearing Housing?

The Bearing housing is the central component of a turbocharger that connects the turbine and compressor wheels. It houses the shaft that links these two wheels and contains the bearing system that allows the shaft to rotate at extremely high speeds—often exceeding 100,000 RPM. The bearing housing also serves as the primary pathway for oil and coolant to lubricate and cool the turbocharger’s internal components.

The first and the most important function of bearing housing is Supporting the Rotating shaft. The bearing housing holds the shaft, turbine wheel, and compressor wheel together as a single rotating assembly. It ensures precise alignment of these components, which is critical for turbo’s operation. Any misalignment can lead to imbalance, vibration, or even catastrophic failure.

Secondly, bearing housing acts as a thermal protection barrier.Turbochargers operate under extreme temperatures, especially on the turbine side, where exhaust gases can reach up to 1,000°C (1,832°F). The bearing housing acts as a thermal barrier, dissipating heat and protecting the turbocharger’s internal components.And at the same time, bearing housing can also ensures proper sealing between the turbine and compressor sides. This prevents oil leakage and maintains the separation of exhaust gases (turbine side) and clean intake air (compressor side). Effective sealing is crucial for the turbocharger’s efficiency and longevity.

Then bearing housing can also Facilitates Lubrication and Cooling. The bearing housing contains oil passages that deliver lubricating oil to the bearings. This oil reduces friction, prevents wear, and helps cool the rotating assembly. In some turbochargers, the bearing housing also includes coolant passages to further manage heat, especially in high-performance or heavy-duty applications.

To sum up, whether you’re driving a high-performance sports car or a heavy-duty truck, the bearing housing plays a silent yet crucial role in delivering the power and reliability you expect from a turbocharged engine. Choosing a suitable and reliable bearing housing manufacturer can safeguard your subsequent driving experience.

Shanghai Shouyuan Technology Co., Ltd. is a reliable turbocharger supplier. We have been deeply involved in this field for many years, with products covering turbochargers and turbo parts such as CHRA, bearing housing, compressor wheel, turbine wheel, etc. And our turbo models like Iveco HX52W Turbo, Iveco H431V Turbo, Volvo S200G Turbo, Volvo TO4B44 Turbo all have high-quality bearing housing for you to choose.