Pump industry bearings


Bearings are an important component of pumps, and their operational status directly affects the efficiency and lifespan of the pump. Reasonable selection and correct maintenance of bearings are crucial for the normal operation of water pumps. In practical applications, we need to choose the appropriate bearing type based on the different working conditions and operating states of the pump, while strengthening daily maintenance to extend the service life of the pump.


The function of bearings in centrifugal pumps is to maintain correct alignment between the shaft or rotor and stationary components under radial and lateral loads. The bearings that radially position the rotor are called radial or linear bearings, while the bearings that axially position the rotor are called thrust bearings. In most applications, thrust bearings are actually used as both thrust bearings and radial bearings.


Pump bearings can be rigid or self aligning. Self centering bearings will automatically adjust themselves to adapt to changes in shaft angle position. In Babbitt alloy or sleeve bearings, the name self aligning applies to bearings with a spherical fit in the housing of the sleeve. In rolling element bearings, this name applies to bearings whose outer ring is ground with a spherical surface or whose outer shell provides a spherical fit.


Typical applications

Bearings are important components used to reduce frictional resistance in mechanical motion. Their purpose is to support the shaft and reduce friction between the shaft and the housing. In pumps, bearings mainly have the following functions:

1. Supporting shaft: The rotating part of the pump includes the shaft, bearings, and seals. The bearing plays a role in supporting the shaft, allowing it to rotate freely inside the pump casing, thereby achieving the pumping function of the pump.

2. Reduce friction: During the operation of the pump, the friction between the shaft and bearings generates heat energy, greatly reducing the efficiency of the pump and even exacerbating mechanical wear. Bearings can reduce direct contact between the shaft and the housing, greatly reducing friction losses and improving work efficiency.

3. Load sharing: During the operation of the pump, the pressure of the liquid in the pump body will cause significant axial and radial loads on the rotating parts of the pump. In this case, the bearing acts as a carrier, sharing a portion of the load and improving the pump's load-bearing capacity.


PPH bearings can be applied.

Centrifugal pump, oil flow pump, mixed flow pump, vortex pump, vertical pump, horizontal pump, single suction pump, double suction pump, etc