What does RN2222M mean in bearings

This bearing is a single row cylindrical roller bearing without an outer ring, this kind of bearing has no outer ring, the inner ring has a double flange, and the housing hole of the bearing is directly used as the rolling surface. The hardness and roughness of the rolling surface of the shell are the same as those of the raceway of the outer ring of the bearing, and its bearing capacity is equivalent to that of the N-type of the complete set of bearings, so it can be said that it is an N-type bearing without an outer ring. These bearings are used in components with limited dimensions in the diameter direction.

RN stands for similar structure to N-type but without outer ring, the first two 22 represent the size series of 22, the last two 22 represent its inner diameter code, indicating that its inner diameter is 22*5=110mm, and M represents that it is a brass solid retainer.

Hope mine can help you!

RN2222M didn't find it.

There are nu2222m cylindrical roller bearings, old model 32522H, inner diameter 110, outer diameter 200, width 53

There are also 2222m spherical roller bearings, old model 1522, inner diameter 110, outer diameter 200, width 53 cr 125 speed 3400

Wuxi Siruikai bearing.

r is the prefix designation, which indicates a bearing without a separable inner or outer ring. n for cylindrical roller bearings, 2 for diameter, series code 2, 22 for inner diameter, 110mm m for brass solid retainers.

Bearing is an important component in contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

According to the different friction properties of moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, rolling bearings have been standardized and serialized, but compared with sliding bearings, its radial size, vibration and noise are larger, and the highest is also higher.

Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage, strictly speaking, it is composed of six parts: outer ring, inner ring, rolling element, cage, seal and lubricating oil. It mainly has an outer ring, an inner ring, and a rolling element, which can be defined as a rolling bearing. According to the shape of the rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings.

RN starts with a cylindrical roller bearing without an outer ring.

For example, RN307M is the old code 502307H, and M is a copper cage.

n is the type code, which is a cylindrical roller bearing.

r is the pre-designation and does not have a separable inner or outer ring.

Example: RNU207 – NU207 bearing without inner ring.

n is the type code, which is a cylindrical roller bearing.

r is the pre-designation and does not have a separable inner or outer ring.

Example: RNU207 – NU207 bearing without inner ring.

Pls is RN or NR

NR indicates a deep groove ball bearing with a stop groove on the outer ring and a stop ring.

If anyone knows what rn stands for, please advise.

N205 is a cylindrical roller bearing.

RN205 is N205 with the outer ring removed, which is the inner sleeve of the bearing.

RN 205 beads have small dots without coats, N205 has coats with larger beads.