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How to use cylindrical roller bearings

wallpapers Cruise 2020-07-29
The rolling element is a centripetal roller bearings of cylindrical rollers. The internal structure of the cylindrical roller bearing adopts rollers arranged side by side. A spacer cage or spacer is installed between the rollers to prevent the rollers from tilting or friction between the rollers. , And effectively prevent the increase of rotation torque.
Cylindrical rollers and raceways of linear contact bearings have large carrying capacity, mainly the radial load of the bearing. The friction between the rolling elements and the retaining edge of the retaining ring is small, suitable for high-speed rotation, and can be divided according to whether the retaining ring has a side surface NU, NJ, NUP, N, NF and other single row cylindrical roller bearings, as well as NNU, NN and other double row cylindrical roller bearings. The bearing is a separable structure with an inner ring and an outer ring.
The cylindrical roller is in linear contact with the raceway, and the radial load capacity is large, which is suitable for heavy loads, impact loads, and high-speed rotation.
The raceways and rolling elements of cylindrical roller bearings have geometric shapes and have been improved in design to provide higher load carrying capacity. The new structural design of the roller end surface and the roller end surface not only improves the axial load carrying capacity of the bearing, but also improves the lubrication condition of the roller end surface and the contact area between the roller end surface and the roller end surface.
Cylindrical roller bearings are detachable bearings, which are very easy to install and disassemble. Cylindrical roller bearings can bear larger radial loads and are suitable for use in high-speed operation.
The angular error (inclination) between the axis of the inner ring and the axis of the outer ring is very small, only 2~4, so the machining accuracy of the shaft and the bearing seat is high. Otherwise, uneven load or stress concentration is likely to occur in the contact part of the raceway, but the stress concentration can be reduced by modifying the roller or raceway contact bus.
Cylindrical roller bearings can be divided into single-row, double-row and multi-row cylindrical roller bearings according to the number of rolling elements. The design of the edge position also shows bearings of different structures. Commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: Single row cylindrical roller bearings are detachable and easy to install and disassemble. Both rings can be tightly installed. The contact line between the roller and the raceway has been modified to reduce stress concentration. Double-row cylindrical roller bearings: Double-row cylindrical roller bearings are floating bearings whose separability makes it easy to install and disassemble. Both rings can be tightly installed. There is almost no inclination.

Tag: roller bearings