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Cylindrical Roller Bearings

Cylindrical roller bearings are a type of separable bearing, making them very easy to install and disassemble. They can withstand large radial loads and are suitable for use in high-speed operating conditions.

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Cylindrical Roller Bearings

Key words:

Cylindrical Roller Bearings

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Product Details

　　These bearings allow for very small angular misalignments between the inner and outer raceways, typically only 2' to 4'. Therefore, machining accuracy requirements for the shaft and bearing seat are relatively high; otherwise, stress concentrations can occur at the contact points of the raceways. However, by adjusting the contact lines of the rollers or raceways, occurrences of stress concentration can be minimized.

　　Depending on the number of rows of rollers installed, cylindrical roller bearings are divided into single-row, double-row, and four-row cylindrical roller bearings, with variations in structure such as full complement rollers.

　　Special Designs

　　E-Type Structure Design

　　Compared to bearings of the same model with early designs, cylindrical roller bearings with E-type structure design have undergone improved internal design, resulting in increased load-carrying capacity and extended service life. To distinguish them from earlier designs, they are designated with the postfix "E."

　　Tapered Bore Bearings

　　The inner bore of single-row and double-row cylindrical roller bearings is generally cylindrical. However, for certain size specifications, bearings with a bore diameter of 112 can be provided, designated with the postfix "K" in the bearing designation.

　　Bearings with Retaining Grooves

　　Single-row cylindrical roller bearings with external retaining grooves can also be provided. These bearings can be positioned using retaining rings, making it convenient to secure the bearing in the bearing housing. Therefore, when limited by axial positioning, it may be preferable to select these bearings. They are designated with the postfix "N" in the bearing designation.

　　Cage Design

　　The cages of single-row cylindrical roller bearings are often made of stamped steel or solid brass. Bearings with cages made of glass fiber-reinforced nylon 66 can also be designed and provided according to usage requirements and customer demands. Bearings with glass fiber-reinforced nylon 66 cages can operate continuously at temperatures up to +120°C.

　　For single-row cylindrical roller bearings operating under continuous high temperatures or harsh conditions, it is recommended to use cages made of stamped steel or solid brass.

　　For double-row or four-row cylindrical roller bearings, solid brass cages are generally used. For extra-large bearings, there are also designs with welded steel support cages.

　　Axial Load-Carrying Capacity

　　Cylindrical roller bearings with specially designed structures and flanges on the inner and outer rings can not only withstand radial loads but also support certain axial loads. The axial load-carrying capacity mainly depends on factors such as the contact between the roller end face and the flange, lubrication, operating temperature, and bearing heat dissipation.