ABMA 22.1:1989(R1999) pdf download

ABMA 22.1:1989(R1999) pdf download.SPHERICAL PIAIN RADIAL BEARINGS, JOINTTYPE METRIC DESIGN
1. SCOPE
1.1 General. This standard for spherical bear- ings, joint type (without rlling elements) has been established for the purpose of defining the char- acteristics of these bearings such as boundary dimensions, tolerances and terminology. This style of bearing consists of an outer ring having an inner concave sphered sliding contact surface and an inner ring having a matched outer convex sphered sliding contact surface. Two general styles, related to manufacturing method are included, swaged (1.2) and fractured (1.3). 1.2 Swaged. This style of bearing is manufac- tured tilizing a“swaging” or forming of the outer ring over the inner ring (ball). These bearings are Series 1 and 2 in this Standard. 1.3 Fractured. This style of bearing has the outer ring split or fratured in one position to facil- itate manufacturing assembly of the rings. These bearings are Series 3 in this Standard.
2. REFERENCE ANSIAFBMA STANDARDS
2.1 ANSIAFBMA Std. 4, Tolerance Definitions and Gaging Practices for Ball and Roller Bearings.
3.TERMINOLOGY
3.1 Types of Bearings 3.1.1 Spherical Plain Bearing, Joint Type. A spherical plain bearing designed primarily to accomodate oscillatory, tilting and low speed rotational movements. Sliding motion is accom- odated at the spherical contact surface and/or at the inner ring bore. 3.1.1.1 Spherical Plain Radial Bearings. A spherical plain bearing intended to support radial load. 3.1.1.2 Spherical Plain Angular Contact Bear- ing. A spherical plain bearing intended to sup- port a combination of radial and axial loads. (Not covered by this Standard at this time.) 3.1.1.3 Spherical Plain Thrust Bearing. A spherical plain bearing intended to support pri- marily axial load. (Not covered by this Standard at this time.) 3.2 Bearing Components 3.2.1 Inner Ring. That part of a spherical plain bearing, joint type, having a convex sphered outer surface and a cylindrical inside surface. 3.2.2 Outer Ring. That part of a spherical plain bearing, joint type, having a concave sphered inner surface and a cylindrical outside surface. 3.2.2.1 One Piece Outer Ring. An outer ring manufactured and assembled in one piece., i.e., not divided or split in any way. 3.2.2.2 Swaged Outer Ring. A one piece outer ring manufactured by deformation of the outer ring material around the inner ring to obtain the sphered inner surface. 3.2.2.3 Single Fractured Outer Ring. An outer ring manufactured in one piece and subse- quently split or fractured in one position in an axial plane, to facilitate manufacturing assembly. 3.3 Features 3.3.1 Core Cylindrical Surface. The inside sur- face of an inner ring having a basically cylindrical form. 3.3.2 Outside Cylindrical Surface. The outside surface of an outer ring having a basically cylin- drical form. 3.3.3 Adhered Outer Surface. That surface of an inner ring intended to make sliding contact with an outer ring and having the form of part of the outside surface of a sphere whose center lies on the bearing axis. 33.4 Adhered Inner Surftace. That surface of an outer ring intended to make sliding contact with an inner ring and having the form of part of the inside surface of a hollow sphere whose cen- ter lies on the bearing axis. 3.3.5 Sliding Cont ct Surface. The bore cylin- drical surface of an inner ring or the sphered surface of an inner or outer ring. 3.3.6 Surtace LUner. Self – lubricating material whichmay be affixed to one ofthe sphered sliding contact surfaces. 3.3.7 Side Faces. Those surfaces of a ring which are nominally perpendicular to the ring axis. 3.3.8 Bore Chamfors. The surfaces joining the bore surface and the side faces. 3.3.9 Outslde Surface Chamfers. The surfaces joining an outside surface and the side faces. 3.3.10 Lubrication Groove. A circumferential groove in the bore cylindrical surface, the outside cylindrical surface, the sphered outer surface, or the sphered inner surface, intended for the pur- pose of conveying lubricant. 3.3.11 Lubrica ition Holo. A radial hole intended to convey lubricant to the sliding contact surfaces or to the distribution groove. 3.3.12 DL trbution Groove. A groove intended to distribute lubricant across the width of a sliding contact surface.