Cylindrical Roller Bearings

Cylindrical roller bearings are equipped with a cage between the rollers, which prevents the roller from tilting or rubbing against other rollers, and efficiently balancing the increase in the rotation torque. This series includes single row cylindrical roller bearings, and double row cylindrical roller bearings.

Single row cylindrical roller bearings are separable, and are capable of bearing only a radial load. This makes them ideal for large electrical machinery, such as a tractor gear box.

Double row cylindrical roller bearings are compact, rigid, and feature a large load bearing capacity, making them ideal for spindle bearings in machine tool spindles.

If the load on cylindrical roller bearings becomes too small during operation, slippage between the rollers and raceways occurs, which may result in smearing. Especially with large bearings since the weight of the roller and cage is high.
In case of strong shock loads or vibration, pressed-steel cages are sometimes inadequate.
If very small bearing load or strong shock loads or vibration are expected, please consult with ZZ for selection of the bearings.
Bearings with molded polyamide cages can be used continuously at temperatures between —40 and 120°C. If the bearings are used in gear oil, nonflammable hydraulic oil, or ester oil at a high temperature over 100°C, please contact ZZ beforehand.

The permissible misalignment of cylindrical roller bearings varies depending on the type and internal specifications. For double-row cylindrical roller bearings, nearly no misalignment is allowed.