Specification

Item	Value
Type	Airframe bearing, antifriction
Material	Airframe antifriction bearing
Status	Check the current issue of the standard before design use.

Dimensions by size

Dimension, in	-3	-4	-5
B — bore (+.0000 / -.0005)	.1900	.2500	.3125
D — outside diameter (+.0000 / -.0005)	.7774	.9014	1.250
W — width of inner ring (+.000 / -.005)	.500	.687	.812
H — width of outer ring (+.000 / -.005)	.392	.454	.656
A — shoulder diameter, inner (approx.)	.304	.430	.515
E — inner ring bore chamfer (+.015 / -.000)	.005	.005	.015
C — outer ring OD chamfer (+.015 / -.000)	.022	.032	.032
Radial limit — Radial limit load, lb	1420	1780	3740
Thrust limit — Thrust limit load, lb	200	300	600
Rating, Case I — Radial load rating, lb, Case I (avg. life 10,000 complete 90° cycles)	1420	1780	3740
Rating, Case II — Radial load rating, lb, Case II (avg. life 10,000 complete 90° cycles)	1220	1600	3300
Axial play — Axial play, in max	.0055	.0055	.0060

Dimensions in inches, loads in pounds, as tabulated; tolerances in the dimension names.

Dash numbers of the standard, each with its own link.

Part	Meaning
Format	MS27643-<dash>
Example	MS27643-3 — dash 3

Case I and Case II are the two radial load rating columns of the listing, for an average life of 10,000 complete 90° cycles.
Part numbers of the manufacturer (Mfg. P/N) are given as listed.

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MS27643 — Airframe Bearing, Antifriction, Self-Aligning, Light and Heavy Duty — nominal sizes and part numbers.