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MS27644-4

Bearing, Ball, Airframe

Part number
MS27644-4
NSN
3110-00-042-4571
NIIN
00-042-4571
Item name
Bearing, Ball, Airframe
Manufacturer
Aeronautical Standards Group
CAGE code
88044
FSC
3110
Unit of issue
EA
DEMIL code
A

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Alternate part numbers

Technical characteristics

Bore Diameter
0.2500 inches nominal
Overall Outside Diameter
0.9014 inches nominal
Outer Ring Width
0.4910 inches nominal
Inner Ring Width
0.6200 inches nominal
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Standard Tolerance Designation
Afbma std tolerance for airframe ball bearings
Special Features
80 pct. full of MIL-G-81322, axial play 0.006 in., heat treat rings and balls to rockwell C 60 to 66 and stabilized for operation at 250 deg F, radial and lateral eccentricity 0.0010 in. inner ring, 0.0016 @in. outer ring
Lubrication Material Document and Classification
MIL-G-81322 mil spec single material response
Material
Plastic polytetrafluoroethylene seal
Material
Steel comp E51100 or steel comp E52100 ball
Material
Steel comp E52100 inner ring
Material
Steel comp E52100 outer ring
Material
Steel corrosion resisting retainer
Material Document and Classification
66 fed std all material responses ball
Material Document and Classification
66 fed std single material response inner ring
Material Document and Classification
66 fed std single material response outer ring
Material Document and Classification
Ams 3652 assn std single material response or ams 3666 assn std single material response seal
Surface Treatment
Cadmium exposed surfaces as mounted
Surface Treatment Document and Classification
QQ-P-416, ty 1, cl 2 fed spec single treatment response exposed surfaces as mounted
Style Designator
Double row
Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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