Advantage of NSK Angular Contact Ball Bearing
Writer: Eric Bearing Limited
The limit speed of contact ball bearing is high, which can bear both radial load and axial load, as well as pure axial load. Its axial load capacity is determined by the contact Angle and increases with the increase of the contact Angle.
Single row angular contact ball bearing can only bear one direction of axial load, in the bearing of radial load, will cause additional axial force, must be applied to the corresponding reverse load, therefore, the bearings are generally used in pairs.Double row angular contact ball bearing can bear large radial and axial bidirectional joint load and torque load, mainly radial load, it can limit the axial displacement of the shaft or housing, the contact Angle is 30 degrees.Need NSK 7020CTYNSULP4 bearings,contact us freely.
1. Bearings for general assembly
General assembly bearings are specially machined so that when the bearings are mounted close to each other, any combination can achieve a predetermined internal clearance or preload and an average load distribution without the use of gaskets or similar devices.
Paired bearings are used when the load carrying capacity of a single bearing is insufficient (using a cross-link configuration) or when it is subjected to a combined load or axial load acting in both directions (using a back-to-back or face-to-face configuration).
2. the basic design of the bearing (can not be used for general assembly), for the configuration of a single bearing
The basic design of single row angular contact ball bearings is mainly used in each position with only one bearing configuration.Its width and prominence are of common grade tolerance.Therefore, it is not suitable to install two single row angular contact ball bearings close to each other.
The paired angular contact ball bearings can bear the combined radial and axial loads, mainly radial loads, as well as pure radial loads.The series configuration can only withstand axial load in one direction, while the other two configurations can withstand axial load in either direction.The bearings of this type are generally selected and combined by the manufacturer and submitted to the user in pairs. After installation, the bearings are preloaded and the rings and steel balls are under axial preloading, thus improving the stiffness and rotation accuracy of the whole group of bearings as a single support.
Automatic selection of angular contact ball bearing is available in the form of back to back, face to face and series arrangement.When the bearings are mounted back to back (the broad end faces of the two bearings are opposite), the contact Angle line of the bearings spreads along the direction of the rotary axis, which can increase the rigidity of the radial and axial support angles and maximize the anti-deformation capacity.When installed face to face (the narrow end faces of the two bearings are opposite), the contact Angle line of the bearing converges towards the direction of the axis of rotation, and the supporting Angle is less rigid.As the inner ring of the bearing extends out of the outer ring, when the outer rings of the two bearings are pressed together, the original clearance of the outer ring is eliminated, which can increase the preloading load of the bearing.When the bearings are installed in series arrangement (the wide end faces of the two bearings are in one direction), the contact Angle lines of the bearings are in the same direction and parallel, so that the two bearings can share the working load in the same direction.However, in order to ensure the axial stability of the installation, two pairs of bearings arranged in series must be installed opposite to each other at both ends of the shaft.
