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four. Scale (a) scale plan and series /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1. Scale plan
A system or table that includes the dimensions of a rolling bearing.
2. Bearing series bearing series
A specific set of tumbling bearings; with progressively added dimensions; in most cases there is the same touch angle and there is a certain relationship between the physical dimensions.
3. Scale series dimension series
Width series or combination of height series and diameter series; tapered roller bearings also include viewpoint.
4. Diameter series diameter series
A part of China's current normative scale plan; a series of bearing outer diameters; for each gauge bearing inner diameter; there is a series of outer diameters; and there is often a specific relationship between the two diameters.
5. Width series width series
A part of China's current norm scale plan. The series of bearing widths; the inner diameter of each diameter series; a width series.
6. Height series
China's current standard thrust bearing scale plan is somewhat. The bearing height of the series; the diameter of the bearing for each diameter series; there is a series of heights.
7. View series series angle series
China's current standard tapered roller bearing scale plan is a bit. A specific size of the touch angle.
(2) Axis, plane, direction
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 perpendicular to the axis of the axis; a plane parallel to the tangent plane of the ferrule reference end face or the opposite side of the washer; 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 tangent plane of the ferrule reference end or the opposite side of the washer; can be considered axial.
9. Radial (axial) distance
The interval measured in the radial direction (axial direction).
10. Touch angle (nominal touch angle) contace 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.
(3) Appearance scale
1. Boundary dimension
A measure that limits the shape of a bearing; the fundamental dimensions are the inner diameter, outer diameter, width (or height), and chamfer dimensions.
2. Bearing inner diameter
The inner diameter of the inner ring of the radial bearing or the inner diameter of the axial ring of the thrust bearing.
3. Bearing outer diameter bearing outside diameter
The outer diameter of the outer ring of the radial bearing or the outer diameter of the thrust bearing.
4. Bearing width bearing width
The axial spacing between the end faces of the two ferrules that limit the width of the radial bearing; the single row tapered roller bearing refers to the axial spacing between the opposite side of the outer ring and the opposite side of the inner ring.
5. Bearing height
The axial spacing between the opposite sides of the two washers that limit the height of the thrust bearing.
6. Ferrule (washer) chamfering scale ring (washer) chamfer dimension
The ferrule (washer) has a chamfered appearance that extends somewhat in the radial or axial direction.
7. Radial chamfer dimension
The ferrule or washer is envisioned from the sharp corner to the gap between the end face of the ferrule or washer and the intersection of the chamfer.
8. Axial chamfer dimension
The ferrule or washer is conceived from the sharp corner to the inner hole of the ferrule or washer or the space between the outer and outer surfaces and the chamfered surface.
9. Flange width
The spacing between the ends of the flange.
10. Flange height
The radial dimension of the flange. The height of the outer flange is the radial spacing between the outer surface of the flange and the outer surface of the outer ring.
11. Stop ring groove diameter
The diameter of the cylindrical outer surface of the stop ring groove
12. Stop ring groove width
The axial spacing between the ends of the ring groove.
13. Stop ring groove depth
The radial spacing between the cylindrical outer surface of the ring groove and the outer cylindrical outer surface.
14. Alignment surface radius
The radius of curvature of the spherical outer surface of the self-aligning seat, the self-aligning seat ring, the self-aligning outer ring or the outer outer ring.
15. Spherning surface centre height
The axial distance between the middle of the curvature of the spherical reverse side of the self-aligning race of the thrust bearing and the opposite side of the opposite collar. (4) Dimensions of parts and parts
1. Ball diameter
The spacing between two parallel planes that are tangent to the outer surface of the sphere.
2. Roller diameter
In the plane straight to the axis of the roller axis (radial plane); the interval between two tangent lines that are tangent to the outer surface of the roller. When calculating the extra load; use the radial plane in the middle of the roller.
3. Roller length
The spacing between the two radial planes including the end of the roller. However, the "roller length" used in accounting for additional loads is the theoretical maximum touch length of the roller and raceway at the shortest touch.
4. Pitch diameter of ball set
The diameter of a circle consisting of the center of a ball in a bearing.
5. Pitch diameter of roller set
The middle of a row of rollers in the bearing, the diameter of the circle running through the axis of the roller shaft.
6. Ball set bore diameter (outside diameter)
The diameter of the inner (external) cylinder of a row of balls in the bearing.
7. Roller set inner diameter (outer diameter) roller set bore diameter (outside diameter)
Radial touch roller bearing; diameter of an inscribed (external) cylinder of a row of rollers.
8. Ball integral bore diameter (outer diameter)
The diameter of the inscribed (external) cylinder of all the balls in the radial ball bearing.
9. Roller overall inner diameter (outer diameter) roller complemert bore diameter (outside diameter)
Radial touch roller bearing; the diameter of the inner (external) cylinder of all rollers.
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Common terms and definitions of rolling bearings (4)
Source: China Bearing Network Time: 2014-09-24