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30319DTX7077 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

30319DTX7077: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: GREASE LUBRICATION, bore_diameter: 3.7399 INCHES MINIMUM AND 3.7402 INCHES MAXIMUM IN, overall_width: 1.7667 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN, load_direction: ANGULAR, surface_finish: GROUND, overall_outside_diameter: 7.8737 INCHES MINIMUM AND 7.8740 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-992-1018, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
30319DTX7077
NSN: 3110-00-992-1018
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 43334 — GENERAL MOTORS CORP DELCO MORAINE NDH DIV (USA)
SPECIFICATIONS
materialGREASE LUBRICATION
bore_diameter3.7399 INCHES MINIMUM AND 3.7402 INCHES MAXIMUM IN
overall_width1.7667 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN
load_directionANGULAR
surface_finishGROUND
overall_outside_diameter7.8737 INCHES MINIMUM AND 7.8740 INCHES MAXIMUM IN
bearing_preload_designationMEDIUM
internal_fit-up_designationTIGHT
nondefinitive_spec/std_data134 TYPE AND 1 CLASS
retainer_fabrication_methodPRESSED
departure_from_cited_documentANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE
criticality_code_justificationZZZW
NSN3110-00-992-1018
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 30319DTX7077 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
INTERNAL FIT-UP DESIGNATION: TIGHT
•
SURFACE FINISH: GROUND
•
BEARING PRELOAD DESIGNATION: MEDIUM
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
OVERALL OUTSIDE DIAMETER: 7.8737 INCHES MINIMUM AND 7.8740 INCHES MAXIMUM IN
•
DEPARTURE FROM CITED DOCUMENT: ANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONTIGHT
SURFACE FINISHGROUND
BEARING PRELOAD DESIGNATIONMEDIUM
CRITICALITY CODE JUSTIFICATIONZZZW
OVERALL WIDTH1.7667 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER7.8737 INCHES MINIMUM AND 7.8740 INCHES MAXIMUM IN
DEPARTURE FROM CITED DOCUMENTANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE
NONDEFINITIVE SPEC/STD DATA134 TYPE AND 1 CLASS
LOAD DIRECTIONANGULAR
SUBSTITUTES & CROSS-REFERENCES 8
M17931-A041Reference document
Same NSN cross-reference
Reference document — Secondary reference
7319-DBNT3Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
7319-DBNT3NTReference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-B-17931Reference document
Same NSN cross-reference
Reference document — Identification reference
79999003Reference document
Same NSN cross-reference
Reference document — Secondary reference
M17931-A041NTSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedDemilitarization required — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is 30319DTX7077?
30319DTX7077 is a BEARING,BALL,ANNULAR.
What parts can replace 30319DTX7077?
There are 8 known substitutes for 30319DTX7077: M17931-A041, 7319-DBNT3, 7319-DBNT3NT and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 30319DTX7077?
30319DTX7077 is cataloged in the U.S. Government catalog under NSN 3110-00-992-1018. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.