BALL BEARING ANNUL
P/N MILB17931
PN MILB17931C
PN M17931-G034
PN M17931-G034NT
PN 307SZZNT3
PN 79999121
NSN 3110-00-922-8516
MFG ELECTRIC BOAT CORP
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
ITEM NAME:   BEARING,BALL,ANNULA
DEFINITION:  A cylindrical device in which the inner or outer ring turns upon a

single or double row of hardened balls which roll easily between the

two rings, thus minimizing friction. For items with faces specially

ground for duplex mounting see BEARING, BALL, DUPLEX. Excludes

BEARING, BALL, AIRFRAME.

CHARACTERISTIC VALUE
OVERALL WIDTH 0.8240 INCHES MINIMUM AND 0.8268 INCHES MAXIMUM
BORE DIAMETER 1.3778 INCHES MINIMUM AND 1.3780 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER 2.8344 INCHES MINIMUM AND 2.8346 INCHES MAXIMUM
SURFACE FINISH GROUND
RETAINER FABRICATION METHOD PRESSED
SEAL QUANTITY 2
BEARING SEAL TYPE CONTACT
LOAD DIRECTION RADIAL
BORE SHAPE STRAIGHT
INTERNAL FIT-UP DESIGNATION STANDARD
INTERNAL CLEARANCE 0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES

MAXIMUM RADIAL
CRITICALITY CODE ZZZW
JUSTIFICATION
LUBRICATION MATERIAL GREASE
LUBRICATION MATERIAL MIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
DOCUMENT AND CLASSIFICATION
MATERIAL STEEL BALL STEEL INNER RING STEEL OUTER RING STEEL

RETAINER RUBBER SYNTHETIC SEAL
NON-DEFINITIVE GOVERNMENT M17931-G034
SPEC/STD REFERENCE
SPEC/STD CONTROLLING DATA 81349
MANUFACTURERS CODE
STYLE DESIGNATOR NON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA 111 TYPE
DEPARTURE FROM CITED ANNUAL BALL BEARING FOR QUIET OPERATION
DOCUMENT APPLICATION TO SUBMARINE USAGE