Rolling bearing vocabulary

Source: China Bearing Network Time: 2013-05-27

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1. Bearing Rolling Bearing: A bearing that performs a tumble motion between parts that support the load and move relative to each other; it includes a raceway part and a roll set with or without a barrier or guide. It can be used to accept radial and axial directions. Or combined load in radial and axial directions.
Angular touch bearing: the nominal touch angle of the ball and the ferrule is greater than 0Â°; and the rolling bearing is less than 90Â°.
Spherical bearings: Centripetal rolling bearings with outer spherical surface and wide inner ring with locking parts. For the first time, the outer casing is used.
Linear motion bearings: Rolling bearings with relatively linear motion in the rolling direction of the two raceways.
Ball bearing: Rolling body is the ball rolling bearing.
Deep groove ball bearings: Each ferrule has a centripetal ball bearing with a groove-shaped raceway with a cross-section of approximately one-third of the circumference of the ball.
Thrust ball bearing: the rolling body is the ball thrust rolling bearing.
Roller bearing: Roller is a roller bearing.
Cylindrical roller bearing: the rolling body is a radial roller bearing of cylindrical roller.
Tapered roller bearing: the rolling body is a radial roller bearing of tapered roller.
Needle roller bearing: the rolling body is the radial roller bearing of the needle roller.
Spherical roller bearing: a self-aligning radial rolling bearing with a convex or concave roller. A bearing with a convex spherical roller; a spherical race with a concave roller; a spherical surface with a concave roller; Shaped raceway.
Thrust roller bearing: the rolling body is a roller thrust bearing.
Thrust cylindrical roller bearing: the rolling body is a thrust roller bearing of cylindrical roller.
Thrust tapered roller bearing: the rolling body is a thrust roller bearing of tapered roller.
Thrust needle roller bearing: Roller is a thrust roller bearing for needle roller.
Thrust spherical roller bearings: self-aligning thrust rolling bearings with a rolling or convex roller. The raceway of a bearing race with a convex spherical roller is spherical; the raceway of a bearing collar with a concave spherical roller For the spherical shape.
Bearing with a seat: a component that combines a radial bearing with a seat; a support plate with a mounting screw on the outer surface parallel to the bearing axis.
Spherical plain bearings: Sliding touch surface is spherical; firstly suitable for spherical sliding bearings with swaying motion, skewing motion and rotary motion.
Combined bearing: a set of rolling bearings that are combined by the above two or more bearing layouts, such as needle roller and thrust cylindrical roller combined bearings, needle roller and thrust ball combined bearings, needle roller and angular touch ball combined bearings Wait.
Other bearings: Rolling bearings of other layouts than the above.
2, bearing parts bearing parts: one of the components that make up the rolling bearing; but does not contain all the accessories.
Bearing ring: a ring-shaped part of a radial roller bearing with one or several raceways.
Bearing washer: A ring-shaped part of a thrust tumbling bearing with one or several raceways.
Flat retaining ring: a detachable, substantially flat washer; used internally or externally as a rib for the outer or inner ring of a radial cylindrical roller bearing.
Oblique ring (separable): a separable ring with an "L" cross section; some of which are used as a rib for the inner ring of a radial cylindrical roller bearing.
Middle retaining ring: A separable ring in a roller bearing with two or more rows of rollers; used to block two rows of rollers and guide the rollers.
Stop ring: a single-mouth ring with a stable cross section; installed in the annular groove; axially positioning the rolling bearing in the casing or on the shaft.
Lock ring: a single-mouth ring with a stable cross-section; installed in the annular groove as a retaining ring to hold the roller or the support frame in the bearing.
Spacer: is a ring part; used between two bearing rings or bearing washers; or between two half bearing rings or between two half bearing washers; so that they maintain a regular axial spacing between them.
Sealing ring: An annular cover consisting of one or several parts; fixed on a ferrule or washer of the bearing and touching or forming a narrow labyrinth gap with another ferrule or gasket; avoiding leakage of lubricating oil and invasion of foreign objects.
Dust cover: is a ring cover; usually stamped from a thin metal plate; fixed to a ferrule or washer of the bearing; and extended toward the other ring or washer; covers the inner space of the bearing; but not with another set Circle or washer touch.
Guard ring: A part attached to the inner ring or shaft ring; the use of centrifugal force to enhance the ability of the tumbling bearing to avoid foreign objects.
Roller: A ball or roller that rolls between raceways.
Persistence: A bearing component that is wrapped in some or some of the tumbler; and moves with it; it is used to block the tumbler; and usually guides the tumbler and holds it in the bearing.
Barrier: A bearing component that sits between and moves with adjacent tumbling bodies; it is used to block the tumbling body.
Ball: spherical roll.
Roller: A roll with a symmetrical axis and a circular cross section in either plane of the straight axis.
Needle roller: small diameter cylindrical roller with a large ratio of length to diameter; usually the length is between 3 and 10 times the diameter; but the diameter usually does not exceed 5 mm. The needle head can have several shapes.
3. Scale scale plan: A system or table containing the dimensions of the rolling bearing.
Bearing series: a specific set of rolling bearings; with progressively added dimensions; in most cases there is the same touch angle and there is a certain relationship between the physical dimensions.
Scale series: width series or combination of height series and diameter series; tapered roller bearings also include viewpoint series.
Diameter series: a part of China's current norm scale plan. The incremental 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.
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.
Height series: a part of China's current standard thrust bearing scale plan. The series of bearing heights; the inner diameter of each diameter series; a series of heights.
Viewpoint series: a part of China's current standard tapered roller bearing scale plan; a specific size of the touch angle.
Shape scale: A measure that limits the shape of a bearing. The fundamental dimensions are the inner diameter, outer diameter, width (or height), and chamfer dimensions.
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.
Bearing outer diameter: the outer diameter of the outer ring of the radial bearing or the outer diameter of the bearing of the thrust bearing.
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.
Bearing height: The axial spacing between the opposite sides of the two washers that limit the height of the thrust bearing.
Ball diameter: the spacing between two parallel planes that are tangent to the outer surface of the ball.
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 diameter of the middle of the roller To the plane.
Roller length: The interval between two radial planes including the end of the roller. However, the "roller length" used to calculate the extra load is the theoretical maximum touch length of the roller and raceway at the shortest touch.
Nominal inner diameter (outer diameter): enveloping the diameter of the cylinder of the theoretical cylindrical inner bore (cylindrical outer and outer surface) theoretical appearance. In a specified radial plane; the diameter of the cone of the outer surface of the envelope conical bore. The spherical diameter of the theoretical appearance of the fundamental spherical appearance.
The nominal width of the ferrule: the spacing between the two theoretical end faces of the bearing ring. It is usually the reference value of the practice width error (fundamental scale).
Bearing practice width: the spacing between the axial line of the radial bearing and the intersection of the two tangent planes of the ferrule practice end face that limits the bearing width. Limit the bearing width with the inner ring end face and the outer ring end face.
Note: For single-row tapered roller bearings; the spacing between the bearing axis and the intersection of the two planes: one plane is the plane tangent to the opposite side of the inner ring practice; the other is the plane tangent to the opposite side of the outer ring practice. At the moment, the inner and outer ring raceways and the inner side of the inner ring are in contact with all the rollers.
Bearing practice height: the spacing between the axial axis of the thrust bearing and the washer that limits the height of the bearing.
Ball nominal diameter: usually used to identify the diameter of the ball scale.
Nominal diameter of the roller: the diameter value usually used to identify the diameter of the roller. About symmetrical roller; refers to the theoretical diameter in the radial plane passing through the middle of the length of the roller; the largest theoretical diameter for the asymmetric roller (ie In a radial plane including the concealed sharp corners of the large end of the tapered roller).
Rolling bearing public service: under normal conditions; at +20 Â° C temperature; bearings and their parts do not cause internal stress due to external forces (including measuring load and parts' own gravity); the scale of the nominal scale should not exceed the size of the error scale.

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