1. The contact Angle is perpendicular to the plane of the axis of bearing line (radial plane) and after bearing rings or gasket transmission to the roller force action line (nominal action line) Angle between.
2. The ball in the group (the) size bearings inside a list of the ball inside (the) take the diameter of the cylinder.
3. Roller in the group (the) diameter radial contact roller bearings inside a list of roller in (the) take the diameter of the cylinder.
4. Bearing collar width two theory nominal end (gasket back) in the distance between. To limit to heart bearings width (thrust bearing level).
5. Bearing the actual width of the bearing axis line to the heart and the definition of the width of the bearing rings the actual end of the two cutting plane distance between the intersection. With the inner ring and outer ring end face limit bearing width.
6. Bearing actual width deviation bearing the actual width and nominal width difference.
7. Complete sets of bearing inner circle in the radial beat the circle in the different Kia Angle, in the hole surface and the relative outside a protection of between maximum and minimum radial distance difference. In the above points of angular position or in its place near the roller on both sides should be and inner and outer groove or inner circle raised edge on the back (tapered roller bearing) face in contact that is bearing parts in the relative position of the normal.
8. Complete sets of bearing outer ring of radial beat Kea in different Angle between position, diameter and the relative surface ring in a fixed maximum and minimum between radial distance difference. In the above points of angular position or in its place near the roller on both sides are to be in the inner and outer groove or inner circle raised edge on the back (tapered roller bearing) face in contact that is bearing parts in the relative position of the normal.
9. Complete sets of bearing inner ring end face groove beat of the inner circle in different Sia Angle, in the inner circle line is equal to the distance from the axis of radial groove inner circle diameter of contact in half, inner ring and outer ring relative to the benchmark end face a maximum and minimum motion between axial distance from the difference. Inside, outside groove all should be in contact with all the roller.
10. Complete sets of bearing outer ring end face groove beat of the Sea in different Angle between position, from the outside in the axis of the radial lines distance is outer diameter of groove contact in half, outer end and relative to the benchmark within a circle motion between maximum and minimum axial distance difference. Inside, outside groove all should be in contact with all the roller.
11. End of internal hole in the inner circle beat Sd axis line of the radial distance equal to its groove contact diameter in half of perpendicular to the axis of the plane and rings line between the collar benchmark end the maximum and minimum axial distance difference.




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