China NJ208 Cylindrical Roller Bearing 40*80*18 - Steel Stamping Cage from Trusted Suppliers & Factory

Load Capacity

High radial load capacity: The cylindrical roller and the raceway are in line contact, with a large contact area, and can withstand large radial loads. It is suitable for mechanical equipment that needs to withstand heavy loads, such as industrial transmission devices, large motors, machine tool spindles, etc.

Certain axial load capacity: Due to its unique flange design, the NJ208 bearing can withstand a certain unidirectional axial load, but its axial load capacity is relatively weak compared to the radial load capacity.

Friction Characteristics

Low friction: When the cylindrical roller rolls in the raceway, the rolling friction resistance is small, which can reduce energy loss, improve the transmission efficiency of the equipment, reduce heat generation, and is suitable for high-speed rotation occasions.

Service Life

Long life: Made of high-quality bearing steel materials, after precision machining and heat treatment processes, the raceway and roller surfaces of the bearing have high hardness and wear resistance, and can withstand long-term load and friction, thus ensuring a long service life.

Industrial Machinery

In some machine tools with high precision requirements, it can be used to support rotating parts such as the spindle, can withstand large radial loads, ensure the rotation accuracy and stability of the spindle, and help improve the accuracy of machined parts. In large concrete machinery, such as the mixing shaft of a concrete mixer, it can withstand the large radial force generated during the mixing process, so that the mixing shaft rotates stably and ensures that the concrete is mixed evenly.

Agricultural Machinery

In the gearbox of a tractor, it can be used to support components such as the gear shaft, withstand the radial force and axial force from the gear transmission, ensure the normal operation of each component in the gearbox, and realize the effective transmission and speed change function of power. In the conveying device of the harvester, it can provide stable support for the conveying roller, withstand the pressure and friction generated when conveying materials, make the conveying roller rotate smoothly, and ensure smooth material transportation.

Automotive Industry

In the transmission of a car, it can be used to support the input shaft, output shaft and intermediate shaft of the transmission, withstand the radial force generated when the gears are engaged, ensure the rotation accuracy and stability of the shaft, enable the transmission to accurately achieve different transmission ratios, and realize the speed change function of the vehicle. In the wheel hub of the car, although the car wheel hub bearing usually adopts a special wheel hub bearing unit, in some specially designed or modified vehicles, NJ208 bearings may also be used to support the wheel hub, bear the radial load and part of the axial load when the vehicle is running, and ensure the stable rotation of the wheel.

Other Fields

In air-conditioning compressors, it can be used to support the rotating parts such as the crankshaft of the compressor, bear the large radial force generated during the compression process, ensure the rotation accuracy and stability of the crankshaft, so that the compressor can work normally and realize the cooling or heating function. In some large ventilation equipment, such as the drive shaft of the fan, it can bear the radial force and axial force generated when the fan is running, so that the drive shaft rotates stably and ensures that the fan can effectively transport air.