Differences Between Single and Double Bearings

Diesel generator bearings, also known as motor bearings, are specialized bearings designed for use in electric motors or motors. Bearings used in generators are components that support the shaft, guiding its rotation and bearing the idle parts on the shaft. The concept of bearings is broad. Since the quality of bearing selection is crucial for diesel generator sets, how should we choose the right bearings, and what are the differences between single and double bearings? Dingbo Power Generator Manufacturer will share this with you one by one.

What are the characteristics of single and double bearings in diesel generators?

What are the characteristics of single bearings?

1.The generator itself has only one bearing (fulcrum).

2.Docking method with the generator

a. The end cover of the generator is docked with the flywheel housing of the engine.

b. The coupling plate (disk) of the generator is docked with the flywheel of the engine.

c. The usual combination of the disk and the end cover.

What are the characteristics of double bearings?

1.The generator itself has two bearings (fulcrums).

2.Docking method with the generator

a. The end cover of the generator is docked with the engine's flywheel housing through a transition section.

b. The shaft extension of the generator is docked with the engine's flywheel through an elastic coupling.

c. The design (or selection) of the transition section and elastic coupling is carried out according to the size of the generator, as well as the flange size of the generator's end cover and the shaft extension size.

How to choose generator bearings?

1.Bearing ring gear: Due to the low transmission accuracy of diesel generator set bearings, along with the large diameter and large gear modulus of the ring gear, the accuracy grade of the gear is usually required to be grade 9 or 10 according to GB/T10095.2 - 2001.

2.Clearance: Yaw and pitch bearings have special requirements in terms of clearance.

3.Anti-corrosion treatment: If necessary, paint maintenance treatment is carried out on the outside of the galvanized layer.

4.Low-temperature impact energy: The low-temperature impact energy requirement for the yaw and pitch slewing bearing rings is: Akv at -20°C is not less than 27J, and the Akv value in the cold state can be determined through negotiation with the user.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. has advanced testing equipment, modern production technology, professional manufacturing technology, perfect quality management system, and strong technical research and development capabilities. It can provide 3KW～2500KW various specifications of ordinary, automatic, four protection, automatic switching, low noise and mobile generator sets, high quality and low energy consumption to meet the diverse power needs of customers, and can also meet users with different voltages and different frequencies. It is required to create a parallel power supply system for multiple units. If you are interested in our product or any question on generator, welcome to send email to [email protected].