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Characteristics and Application Range of Cylindrical Roller Bearings

Edit:Shandong Yunhua Bearing Co., Ltd. Time:2023-06-12

The cylindrical roller is in line contact with the raceway and has a large radial load capacity. Suitable for withstanding heavy loads and impact loads, as well as high-speed rotation. The raceway and rolling body of cylindrical roller bearings are geometrically shaped. After improved design, it has a high load-bearing capacity. The new structural design of the retaining edge and roller end face not only improves the axial load-bearing capacity of the bearing, but also improves the lubrication conditions in the contact area between the roller end face and the retaining edge, improving the service performance of the bearing. So here is an analysis of its five major advantages:

1. The roller and raceway are in line contact or repaired line contact, with a large radial bearing capacity, suitable for bearing heavy loads and impact loads.

2. Low friction coefficient, suitable for high-speed, precision bearings with limit speeds close to deep groove ball bearings.

3. The N-type and NU type can move axially and adapt to changes in the relative position of the shaft and casing caused by thermal expansion or installation errors. They can be used as free end supports.

4. The machining requirements for the shaft or seat hole are high, and the relative deviation of the outer ring axis after bearing installation should be strictly controlled to avoid contact stress concentration.

5. The inner or outer ring can be separated for easy installation and disassembly. The application of cylindrical roller bearings is also quite extensive, such as large and medium-sized electric motors, locomotives and vehicles, machine tool spindles, internal combustion engines, generators, gas turbines, reducers, rolling mills, vibrating screens, and lifting and transportation machinery.

Cylindrical roller bearings can be divided into different structures such as single row, double row, and multi row cylindrical roller bearings based on the number of rows of rolling elements installed. Different structural bearings are also reflected in the design of the position of the retaining edge. The commonly used cylindrical roller bearings have the following forms:

Single row cylindrical roller bearing: Single row cylindrical roller bearing is a separable bearing that is easy to install and disassemble. Both rings can adopt a tight fit, and the modified contact line between the roller and raceway can reduce stress concentration.