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Common terms and definitions of bearings (14)
Source: China Bearing Network Time: 2014-02-03
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Roller diameter and shape specific combination of public service.
25. Roundness deviation from circular from
The minimum radial separation between the two concentric circles of the summed up; the roundness error.
26. Cylindricity error deviation from cylindrical form
The minimum radial spacing between the two coaxial cylinders being measured; the cylindricity error.
27. The spherical aberration (the fundamental spherical appearance) of the deviation from the spherical form summarizing the outer (or inner and outer) of the inscribed sphere or the outer sphere of the generalized outer surface (outer and outer surface) and the maximum radial spacing between the singular points on the general appearance in the free equatorial plane .
28. Radial runout of the inner ring of a complete set of bearings (radial bearings)
When the inner ring is in a different angular orientation; the difference between the maximum and minimum radial spacing between the outer hole outer surface and a fixed point relative to the outer ring. The angular orientation at the above point or the tumbling body at the two ends adjacent thereto should be , the outer ring raceway or the inner ring reverse rib (tapered roller bearing) inner surface touch; that is, the bearing parts are in normal relative orientation.
29. Radial runout of the outer ring of a complete set of bearings (radial bearings)
When the outer ring is in a different angular orientation; the difference between the outer diameter of the outer diameter and the maximum and minimum radial spacing between the fixed points of the outer ring. The angular orientation at the above point or the roll body adjacent to both ends should be internal, The outer ring raceway or the inner ring reverse rib (tapered roller bearing) touches the inner surface; that is, the bearing parts are in normal relative orientation.
30. Radial clearance (bearings that can accept pure radial loads; non-preloaded conditions) radial internal clearance
When there is no external load; in a different view direction; one ferrule relative to the other lap; the arithmetic mean of the radial interval from a radial misalignment limit to the opposite limit azimuth. This average includes The amount of displacement of the ferrule or washer relative to the ferrule or washer when the displacement of the ferrule or washer in different angular orientations and the different angular orientation of the tumbling set.
31. Theoretical radial clearance (radial touch bearing) theoretical radial internal clearance
The outer ring raceway touch diameter minus the inner ring raceway touch diameter minus the double roll body diameter.
32. Axial clearance (bearings capable of accepting axial loads in both directions; non-preloaded condition) axial internal clearance
When there is no external load; the arithmetic mean of the axial spacing of one ferrule or washer from the axial limit displacement to the opposite extreme orientation relative to the other ferrule or washer. This average contains the ferrule or washer The amount of displacement of each other in different angular orientations and the displacement of the roll set relative to the ferrule or washer at different angular orientations.
six. Torque, load and life. Starting torque
The torque required to rotate a bearing ring or washer relative to the opening of another fixed ferrule or washer.
2. Rotational torque
When a bearing ring or washer rotates; the torque required to block the movement of the other ring or washer.
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