Automobile manufacturing
Every industry faces different challenges, but almost all industries need to extend equipment start-up time, reduce maintenance, improve safety and energy consumption, and reduce total asset ownership costs. With its expertise in various industries and decades of technical experience in equipment manufacturers and end users, Metro can not only provide products, but also provide comprehensive solutions to help customers achieve their goals.
The components and assemblies of MDR bearings used in automobiles include engine, generator, water pump, clutch, transmission, differential, steering gear, air conditioner, etc. The main types of bearings are small deep groove ball bearings, accounting for about 27% of the total amount of automotive bearings. The function of the engine is to locate the center, bear pressure and gravity, parallel the axis, locate the wheelbase and reduce friction, so that the engine can operate safely, reliably and durably at different speeds, loads and temperatures.
The main function of hub bearing is to load and provide precise guidance for hub rotation. It bears both axial and radial loads, and is a very important component. Traditional automobile wheel bearings are composed of two sets of tapered roller bearings or ball bearings. The installation, oiling, sealing and clearance adjustment of bearings are carried out on the automobile production line.
An important difference between automobile and ordinary mechanical bearings is that automobile bearings are used in mobile environment. At the same time, the environment of various parts of the automobile varies greatly, so the stress and working conditions of automobile bearings are more complex. In the design and process of different types of motors need to make targeted improvements. For example, automotive condenser fan motor bearings should take into account the continuous operation of the motor at high temperature, the deformation of the bearings, the dust and noise prevention of wiper bearings, the good sealing, corrosion resistance of generator bearings, starting moment and long life at low temperature, etc.
Hub bearing unit is developed on the basis of standard angular contact ball bearing and tapered roller bearing. It integrates two sets of bearings. It has the advantages of good assembly performance, eliminating clearance adjustment, light weight, compact structure, large load capacity, pre-loading grease for sealed bearings, eliminating external hub seal and avoiding maintenance. It has been widely used in cars. There is also a trend to gradually expand the application of trucks.
Chassis: hub bearing - angular contact ball bearing or deep groove ball bearing, tapered roller bearing, suspension bearing - thrust ball bearing, thrust needle roller bearing, steering gear bearing
Engine: tension wheel, idler wheel bearing-seat ball bearing, deep groove ball bearing, tapered roller bearing, clutch separation bearing-ball bearing, electromagnetic clutch Bearing-double row angular contact ball bearing, pump Bearing-double row roller bearing, etc.
Gearbox: needle roller bearings
Other parts (wipers, seats, universal joints, etc.): deep groove ball bearings, tapered roller bearings, etc., the most commonly used tapered roller bearings.
