GB/T 36254-2018Standard light annular ball bearings primarily for aircraft generators and motor-generators (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the structure, dimensions and requirements of standard light deep groove ball bearings primarily used in aerospace motors.

This standard applies to the selection of standard light deep groove ball bearings for aerospace motors.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 307.1 rolling bearing radial bearing tolerance

GB/T 36222 General specification for deep groove ball bearings for aviation motors

GJB2294 Aerospace Stainless Steel and Heat Resistant Steel Bar Specification

GJB6484 Military High Carbon Chromium Bearing Steel Specification

JB/T 6639 Rolling bearing skeleton rubber seal technical conditions

JB/T 7752 rolling bearing seal deep groove ball bearing technical conditions

MIL-C-11796 Thermal Application Paraffin Oil Anticorrosive (Corrosionpreventivecompound, petrolatum, hotapplica- Tion)

MIL-PRF-27617D Grease and oxidant grease for aircraft and instrumentation (Grease, aircraftandinstrument,fuel Andoxidizerresistant)

MIL-PRF-81322 Aircraft wide temperature range universal grease (Grease, aircraft, generalpurpose, widetempera- Turerange,NATOcodeG-395)

3 Symbol

The following symbols apply to this document.

B. bearing width;

Cr. radial basic dynamic load rating;

C0r. radial basic static load;

D. outer diameter of the bearing;

d. bearing inner diameter;

Ra. axial chamfer size of the outer ring of the bearing;

Rr. radial chamfer size of the outer ring of the bearing;

Rs. bearing inner and outer ring fillets.

4 Structure, size and requirements