1 nominal bore diameter (outside diameter)
Envelope of the basic cylindrical bore (cylindrical surface) theory of the surface of the cylinder diameter. Note: For the rolling bearing nominal diameter nominal outside diameter, generally within the hole and the outer surface of the actual deviation of the reference value.
2 nominal ring width
End bearing ring distance between two theories. Deviation of the actual width is usually the reference value (basic size).
3 nominal bearing width (bearing height)
Two theoretical end ferrule (washer on the back) the distance between the width to limit the radial bearings (thrust bearings height). Bearings are generally bearing the actual width or height of the actual deviation of the reference value (basic size).
4 actual bearing width
Axis radial bearing line and the limited width of the ring bearing the actual end point of intersection between the two tangent plane distance.
Note: For single row tapered roller bearings, the bearing axis line and the following distance between the intersections of two planes: a plane is actually the back of the tangent with the inner plane, the other is the actual back of the tangent with the outer surface. At this point, the outer ring raceway and the inner wall of the inside rear roller are in contact with all.
5 actual bearing height
Axis of the thrust bearing washers with two highly qualified real bearing on the back of the distance between the intersection of the tangent plane.
6 deviation of the actual deviation of the actual bearing height
Thrust bearing and the actual height difference between the nominal height.
7 nominal chamfer dimension
the chamfer dimensions as the base.
8 radial single chamfer dimensions
in a single axial plane, the imaginary ring or gasket surface with chamfered corners to end the intersection ring or gasket between the distance.
9 axial single chamfer dimension
In a single axial plane, the imaginary ring or gasket surface with sharp corners to chamfer the inner ring or gasket hole or belt surface distance between the intersection.
10 Maximum single chamfer dimension largest permissible single chamfer dimension
the maximum radial or axial single chamfer dimension.



Other News:
Tolerances associated with the bearing size
Several factors affect the service life of plate mill backup roll bearings
The advantages of linear motion bearings and uses
Roller bearing repair steps
Bearing torque and load
The select of long life bearings
Bearing Removal
Repair of rolling bearings