Can The Inner And Outer Rings Of Cylindrical Roller Bearings Be Interchangeable?

Time：2020.05.01  Source：Roller Bearings Suppliers

Cylindrical roller bearings (also called “Cylinder Roller Bearings”) are bearings that use cylinders as rolling elements, unlike balls in ball bearings. In this way, the contact area between the roller and the outer ring is larger (linear), and the load is distributed on a wider surface. Subsequently, they have a relatively high radial load capacity and are suitable for high speeds. Double row cylindrical roller bearings have high radial stiffness and are mainly used in precision machine tools.

According to the presence or absence of ribs, it can be divided into NU, NJ, NUP, N, NF and other single-row cylindrical roller bearings, and NNU, NN and other double-row cylindrical roller bearings. The bearing has a separable inner ring and outer ring structure.

Cylindrical roller bearings with no ribs on the inner or outer ring can move axially relative to the inner and outer rings, so they can be used as free-end bearings. Cylindrical roller bearings with double ribs on one side of the inner ring and outer ring and a single rib on the other side of the ring can withstand a certain degree of axial load in one direction. Generally use steel plate stamping cage, or copper alloy car body cage. But some also use polyamide forming cages.

Cylindrical roller bearings with no ribs on the inner or outer ring can move axially relative to the inner and outer rings, so they can be used as free-end bearings. Cylindrical roller bearings with double ribs on one side of the inner ring and outer ring and a single rib on the other side of the ring can withstand a certain degree of axial load in one direction. Generally use steel plate stamping cage, or copper alloy car body cage. But some also use polyamide forming cages.

Characteristics of cylindrical roller bearings

1. The roller and the raceway are in line contact or underline contact. The radial load capacity is large, and it is suitable for withstanding heavy loads and impact loads.

2. The friction coefficient is small, suitable for high speed, the limit speed is close to the deep groove ball bearing.

3. N-type and NU-type can move axially, can adapt to the change of the position of the shaft and housing phase NSK bearing caused by thermal expansion or installation error, and can be used as a free end support.

4. The processing requirements of the shaft or the seat hole are relatively high. The relative deflection of the outer ring axis after the bearing is installed must be strictly controlled to avoid contact stress concentration.

5. The inner ring or outer ring can be separated for easy installation and disassembly.

Whether the inner rings and outer rings of the cylindrical roller bearings are changeable?

According to the above introduction, everyone has a certain understanding of this type of bearing , but during use, there will definitely be such questions. Can the inner and outer rings of this bearing be interchangeable, what if the inner and outer rings are confused? The following is a detailed introduction for everyone.

Many manufacturers of cylindrical roller bearings use the inner ring and the outer ring of the bearing after opening the bearing. They may be mixed to avoid finding the inner and outer rings of the bearing, which may affect the service life of the bearing. . In fact, the bearing ring of this type of bearing is the same. It is for the convenience of considering the customer, so that the customer can use the inner ring and the outer ring of the bearing with ease. It is completely interchangeable.

In addition, the suffixes of cylindrical roller bearings are interchangeable, for example: whether the bearing inner rings of NU, NJ, are interchangeable. In this case, do not replace INA bearings. The suffix of the outer ring of the bearing shall prevail. The two types of bearings are different, so they cannot be replaced. If the inner ring of the same type is found to be mixed, it will not affect the quality and life of the bearing after assembly.

N series cylindrical roller bearings can be taken out of the outer ring, and some bearing users can take the outer ring of the bearing down. In fact, it is also possible, but if this method of use is used, the cylindrical roller bearing itself is There are bearings without an outer ring, the cost price will be much lower, so customers do not blindly remove the outer ring to use, so that an outer ring is wasted to increase the cost to yourself.

Spark Wuxi Bearing Co., Ltd (Aka. Spark Bearings) is a professional manufacturer of rolling bearings and ball bearings of the company, specifically noted in the foreign trade more than ten years, has been providing products to customers in more than 100 countries worldwide. For more product details, please visit our website.