What are the differences between cylindrical roller bearings and needle roller bearingsll

3、 Difference between cylindrical roller bearing and needle roller bearing

1. Different structures

The rolling body of the cylindrical roller bearing is a tapered roller; The roller of needle roller bearing is needle roller, but the structure of cylindrical roller bearing is larger than that of needle roller bearing, and the cylindrical roller bearing is divided into single row double row and multi row, and needle roller bearing does not.

2. Different bearing capacity

The round ball bearing has large load capacity and mainly bears radial load. Only single row bearings with ribs on the inner and outer rings can bear relatively high load with relatively small steady axial load or relatively large intermittent axial load, even though they have relatively small cross sections

3. Different materials

Generally, cylindrical roller bearings are made of high-quality bearing steel and special steel; The thin-walled needle roller bearing is formed by pressing steel plate. The hardness and performance of different materials will also be different, and the use experience and service life will also be different.

4. Different speeds

The working speed of cylindrical roller bearing is higher than that of needle roller bearing, which is also the reason why many motors, machine tools, etc. choose to use cylindrical roller bearing, while needle roller bearing with a slightly lower speed is applied to agricultural machinery, printing machinery, and other mechanical equipment that do not require too much speed.

5. Different applications

(1) Cylindrical roller bearing. It is especially applicable to the shafts that are rigidly supported, support short shafts, and cause axial displacement due to thermal elongation, and the machine accessories that need separate bearings for installation and removal. It is mainly used for large motors, machine tool spindles, front and rear engine support shafts, train and bus trunk shaft supports, diesel engine crankshafts, automobile and tractor gearboxes, etc.

(2) Cylindrical needle roller bearing. There are many types of needle roller bearings. Solid ring needle roller bearings are mostly used in machine tools and automobile gearboxes. It has the advantages of small radial section size and large bearing radial load. The application scope of roller needle bearings is printing machinery, pasture machinery, agricultural machinery, CNC equipment guide wheels, conveyor lines, etc.