Bearing some of the basic concepts of

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A. Theoretical rotation axis line of rolling of imported bearings, bearing to the heart of imports inner axis line, the thrust of imported bearings refer to the axis line of the shaft ring.
(2) the inner ring (shaft washer) axis line inner ring (shaft washer) axis.FAG bearing
The inner ring (shaft washer) cylindrical bore or conical bore cylinder internal or internal line of the axis of the cone.
3 cup (seat) the axis line of outer ring (housing washer) axis
If the outer ring of the outer surface is cylindrical, the outer surface of the external cylinder axis line is the outer ring of the axis line, if the surface is the basic spherical shape, through the ferrule outer surface of the external center of the sphere, the vertical at the outer base end of the line for the axis line of the outer ring.
4 axis line of the cone inner (outer) cone (the cup) axis
Tapered roller bearing inner ring (outer ring), the axis line.
Radial plane radial plane
Plane perpendicular to the axis line, and the end of the ferrule benchmark or gasket on the back of the section parallel to the plane, that is the radial plane.double row bearing
6. Radial radial direction
In the radial plane through the axis line direction.
Axial plane axial plane
Inclusive of the plane including the axis line.
8 axial axial direction
Parallel to the direction of the bearing axis line. With ferrule base end or gasket on the back of the section perpendicular to the direction that is axial.roller thrust bearings
9 radial (axial) distance radial (axial) distance
Measured in the radial (axial) distance.
10 The contact angle (nominal contact angle) contace the angle (nominal, at contact angle)
The plane perpendicular to the bearing axis line (radial plane) passing through the bearing ring or washer to the joint effect of the rolling element line (nominal angle between the line of action).
11 nominal contact point nominal contact point
Bearing parts in the normal relative position of the rolling element and raceway surface contact point.
12 rings (washers) benchmark end reference face of a ring (a washer)
Bearing factory designated as the datum of the ring (washer) end can be used as the measuring benchmarks.
11 nominal contact point nominal contact point
Bearing parts in the normal relative position of the rolling element and raceway surface contact point.
12 rings (washers) benchmark end reference face of a ring (a washer)
Bearing factory designated as the datum of the ring (washer) end can be used as the measuring benchmarks.