Home>Bearing knowledge> Common terms and definitions of the shaft, plane and direction of the rolling bearing

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Common terms and definitions for the axis, plane and direction of the rolling bearing

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1. Bearing axis
The theoretical axis of rotation of the rolling bearing; the radial bearing, ie the inner ring axis; the thrust bearing, the shaft axis.
2. Inner ring (shaft) inner ring (shaft washer) axis
The inner cylinder of the inner ring (shaft ring) or the inner cylinder of the conical hole or the axis of the inscribed cone.
3. Outer ring (housing) outer ring (housing washer)axis
If the outer and outer surfaces of the outer ring are cylindrical; the axis of the outer cylinder of the outer and outer surfaces is the outer axis of the outer ring; if the outer surface is spherical, the outer surface of the outer ring is circumscribed; The line on the reference end face of the outer ring; the axis of the outer ring.
4. Conical inner ring (outer ring) axis line cone (cup) axis
The axial line of the inner ring (outer ring) of tapered roller bearings.
5. Radial plane
A plane that is straight to the axis of the axis; a plane parallel to the reference plane of the ferrule or the tangential surface of the back of the gasket; can be considered as a radial plane.
6. Radial radial direction
The direction of the axis through the axis in the radial plane.
7. Axial plane
The plane that accommodates the axis of the shaft.
8. Axial axial direction
Parallel to the direction of the bearing axis, straight to the ferrule reference end or the back of the washer; can be considered axial.
9. Radial (axial) distance
The interval measured in the radial direction (axial direction).
10. Touch angle (nominal contact angle)
The angle between the plane (radial plane) that is straight to the bearing axis and the resultant effect line (nominal effect line) that is transmitted to the roll through the bearing ring or washer.
11. Nominal touch point
When the bearing parts are in normal relative orientation; the points of the rolling body and the raceway are touched.
12. Ferrule (washer) reference end face reference face of a ring (a washer)
The bearing manufacturer specifies the end face of the ferrule (gasket) as the reference surface; it can be used as a reference for measurement.

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