Bearing selection summary
The types, types and sizes of rolling bearings are varied. In order for the mechanical device to perform as expected, it is essential to select the most suitable bearing. In order to select a bearing, it is necessary to analyze a number of factors, and to conduct research and evaluate the procedures for selecting a bearing from various angles. There are no special specifications, but the general order is as follows:
(1) Master the conditions of use of mechanical devices and bearings, etc.
(2) Clear requirements for bearings
(3) Type of selected bearing
(4) Selected bearing configuration
(5) Selected bearing size
(6) Selected bearing specifications
(7) Method of installing selected bearings
Bearing conditions and environmental conditions
Correctly grasping the bearing's use position, operating conditions and environmental conditions in the mechanical device is the prerequisite for selecting a suitable bearing. For this, you need to obtain the following data and information:
(1) Function and structure of mechanical devices
(2) Where the bearing is used
(3) Bearing load (size, direction)
(4) Rotation speed
(5) Vibration and shock
(6) Bearing temperature (ambient temperature, temperature rise)
(7) Ambient atmosphere (corrosive, clean, lubricative)
Bearing configuration choice
Usually, the shaft is supported by two bearings in the radial direction and the axial direction. At this time, the bearing on one side is called a fixed-side bearing, which bears both radial and axial loads, and functions as a fixed shaft and a bearing housing. The effect of the relative axial displacement between. The other side is referred to as the free side, and only the radial load is applied, and the axial direction can be relatively moved, thereby solving the problem of the expansion and contraction of the shaft and the spacing error of the mounted bearing due to temperature changes.
For fixed-side bearings, choose bearings that can be moved axially (such as cylindrical roller bearings) or moved with assembly surfaces (such as radial ball bearings). On a relatively short shaft, if there is no other difference between the fixed side and the free side, use a bearing that is only axially movable in one direction (such as a radial thrust ball bearing).
The types, types and sizes of rolling bearings are varied. In order for the mechanical device to perform as expected, it is essential to select the most suitable bearing. In order to select a bearing, it is necessary to analyze a number of factors, and to conduct research and evaluate the procedures for selecting a bearing from various angles. There are no special specifications, but the general order is as follows:
(1) Master the conditions of use of mechanical devices and bearings, etc.
(2) Clear requirements for bearings
(3) Type of selected bearing
(4) Selected bearing configuration
(5) Selected bearing size
(6) Selected bearing specifications
(7) Method of installing selected bearings
Bearing conditions and environmental conditions
Correctly grasping the bearing's use position, operating conditions and environmental conditions in the mechanical device is the prerequisite for selecting a suitable bearing. For this, you need to obtain the following data and information:
(1) Function and structure of mechanical devices
(2) Where the bearing is used
(3) Bearing load (size, direction)
(4) Rotation speed
(5) Vibration and shock
(6) Bearing temperature (ambient temperature, temperature rise)
(7) Ambient atmosphere (corrosive, clean, lubricative)
Bearing configuration choice
Usually, the shaft is supported by two bearings in the radial direction and the axial direction. At this time, the bearing on one side is called a fixed-side bearing, which bears both radial and axial loads, and functions as a fixed shaft and a bearing housing. The effect of the relative axial displacement between. The other side is referred to as the free side, and only the radial load is applied, and the axial direction can be relatively moved, thereby solving the problem of the expansion and contraction of the shaft and the spacing error of the mounted bearing due to temperature changes.
For fixed-side bearings, choose bearings that can be moved axially (such as cylindrical roller bearings) or moved with assembly surfaces (such as radial ball bearings). On a relatively short shaft, if there is no other difference between the fixed side and the free side, use a bearing that is only axially movable in one direction (such as a radial thrust ball bearing).
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