Do you want to know the difference between cylindrical roller bearings and needle roller bearings?

Cylindrical roller bearings are precision bearings. The rib guide of the precision-sorted roller shaft ring is composed of a cage, rollers and a guide shaft ring. It can be separated from another bearing ring and is a separable bearing. Cylindrical roller bearings are easier to install and disassemble, especially when interference fit between the inner and outer rings, the shaft and the shell is required.

Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. This type of roller is called a needle roller. Despite its smaller cross-section, the bearing still has a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. When the inner diameter size and load capacity are the same as other types of bearings, the outer diameter Very small, especially suitable for support structures with limited radial installation size.

1. Different structures

The rolling elements of cylindrical roller bearings are tapered rollers; the rolling elements of needle roller bearings are needle rollers. However, the structure of cylindrical roller bearings is larger than that of needle roller bearings, and cylindrical roller bearings are divided into single row, double row and Multiple rows, needle roller bearings do not.

2. Different tolerances

Round ball bearings have a large load capacity and mainly bear radial loads. Only single-row bearings with ribs on both the inner and outer rings can withstand smaller steady axial loads or larger intermittent axial loads. Despite their smaller cross-sections, the bearings still have higher load-bearing capabilities.
 

3. Different materials used

Cylindrical roller bearings are generally made of high-quality bearing steel and special steel; while thin-walled needle roller bearings are made of stamped steel plates. Different materials will also differ in hardness, performance, etc., and the use experience and service life will also be different.

4. Different speeds

Cylindrical roller bearings have a higher operating speed than needle roller bearings, which is why many motors, machine tools, etc. choose to use cylindrical roller bearings, while needle roller bearings with slightly lower speeds are used in agricultural machinery, printing machinery, etc. These are mechanical equipment whose speed requirements are not too high.
 

5. Different application situations

(1) Cylindrical roller bearings. It is especially suitable for rigidly supported shafts that also support short shafts and axial displacement caused by thermal elongation and machine accessories that require separable bearings for installation and disassembly. Mainly used in large motors, machine tool spindles, engine front and rear support shafts, train passenger car box shaft supports, diesel engine crankshafts, automobile tractor gearboxes, etc.

(2) Cylindrical needle roller bearings. There are many types of needle roller bearings. Solid ferrule needle roller bearings are mostly used in machine tools and automobile gearboxes. Its advantages are small radial cross-section size and large radial load. The applicable scope of roller needle roller bearings is printing machinery and pasture. Rollers for guide rails of machinery, agricultural machinery, CNC equipment, conveyor lines, etc.
 

The above is the editor's summary of the differences between cylindrical roller bearings and needle roller bearings. It can be seen that the differences between cylindrical roller bearings and needle roller bearings are mainly reflected in different structures, different bearing capacities, different materials, different rotation speeds, and applications. There are several aspects such as different occasions. In addition, if you have other questions about bearings in the future, you can contact us at Lasting Bearing Group by phone or email, and we will provide you with more professional answers.