BS/EN 4265-2013 pdf download.Aerospace series Bearing spherical plain, metal to metal in corrosion resisting steel Wide series Dimensions and loads Inch series.
They are intended for use in fixed or moving parts of the aircraft structure and their control mechanisms.
They shall be used in the temperature range — 54 °C to 150 °C. As they are lubricated by means of the following greases:
Code A: Grease as per MIL-PRF-23827C, operating temperature range – 73 °C to 121 °C.
Code B: Grease as per MIL-PRF-81322G, operating temperature range — 54 °C to 177 °C.
The range of application for bearings lubricated with grease per code A is limited to 121 °C.
In both cases the spherical surface of the outer or inner ring have to be provKied with a dry-film lubncant as per MIL-PRF-46010G or equivalent (anti-seizing protection).
The slide hole treatment either at the outer ring or inner ring.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (Including any amendments) applies.
EN 2030, Aerospace series – Steel FE-PM3501 (X1O5CrMo17) – Hardened and tempered – Bars 0 S 150 mm1)
EN 2337, Aerospace series — Spherical plain bearings — Technical specification EN 2424, Aerospace series — Marking of aerospace products
EN 3161, Aerospace series — Steel FE-PM3801 (X5CrN1Cu17-4) — Air melted — Solution treated and precipitation treated — Bar — a or 0 .≤ 200 mm — Rm  930 MPa
ISO 1132-1, Rolling beatings — Tolerances — Part 1: Terms and definitions
ISO 8075. Aerospace — Surface treatment of hardenable stainless steel parts
TR 4475, Aerospace series — Bearings and mechanical transmissions for airframe applications — Vocabulary 1)
MIL-PRF-23827C. Grease — Aircraft and instrument — Gear and actuator screw — NATO code number G-354 2)
MIL-PRF-460100, Lubricant— Solid film — Heat cured— Corrosion inhibiting 2)
MIL-PRF-81322G, Grease — Aircraft — General purpose — Wide temperature range — NATO code number G-395 ²)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in TR 4475 apply.
4 Symbols and abbreviations
Symbols of limit deviations are in accordance with definitions of ISO 1132-1.
a is the maximum angle of tilt of the outer ring with respect to the inner ring, with the spherical surface of the outer ring being completely in contact with the inner ring;
is the permissible static axial load;
is the permissible static radial load;
is the single plane mean bore diameter deviation:
is the single plane mean outside diameter deviation;
is the deviation of a single bore diameter:
&. is the deviation of a single outside diameter.
Definitions and vocabulary according to TR 4475.
5 Requirements
5.1 Configuration, dimensions, tolerances and mass
According to Figures 1 and 2 and Table 1. Dimensions and tolerances are expressed in millimetres (inches).
Values apply after to surface treatment.
5.2 Surface roughness
In accordance with Figures 1 and 2. Values in micrometres (micro inches), apply prior to surface treatment.
5.3 Material
Inner ring: According to EN 2030. hardness 55< HRC <62.
Outer ring: According to EN 3161, hardness 28< HRC < 38 before swaging.
5.4 Surface treatment
7 Marking
According to EN 2424, style A. In addition, the bearing may be marked with manufacturer’s part number.
Marking position and method are at manufacturer’s option.
8 Technical specification
According to EN 2337.BS/EN 4265-2013 pdf download.

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