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JL39788 — SEAT,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

JL39788: SEAT,BEARING.

The SEAT,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1074 OR STEEL COMP 1075 OVERALL, bore_diameter: 1.0490 INCHES MINIMUM IN, overall_width: 0.3050 INCHES MINIMUM AND 0.3450 INCHES MAXIMUM IN, outside_diameter: 1.7700 INCHES MINIMUM AND 1.7840 INCHES MAXIMUM IN, special_features: MODIFIED MATERIAL, material_document_and_classification: AISI 1074 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1075 ASSN STD 2ND MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-005-0876, 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
JL39788
NSN: 3110-00-005-0876
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL COMP 1074 OR STEEL COMP 1075 OVERALL
bore_diameter1.0490 INCHES MINIMUM IN
overall_width0.3050 INCHES MINIMUM AND 0.3450 INCHES MAXIMUM IN
outside_diameter1.7700 INCHES MINIMUM AND 1.7840 INCHES MAXIMUM IN
special_featuresMODIFIED MATERIAL
material_document_and_classificationAISI 1074 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1075 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN3110-00-005-0876
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: JL39788 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 1074 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1075 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.7700 INCHES MINIMUM AND 1.7840 INCHES MAXIMUM IN
•
BORE DIAMETER: 1.0490 INCHES MINIMUM IN
•
MATERIAL: STEEL COMP 1074 OR STEEL COMP 1075 OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 1074 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1075 ASSN STD 2ND MATERIAL RESPONSE OVERALL
OVERALL WIDTH0.3050 INCHES MINIMUM AND 0.3450 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.7700 INCHES MINIMUM AND 1.7840 INCHES MAXIMUM IN
SPECIAL FEATURESMODIFIED MATERIAL
BORE DIAMETER1.0490 INCHES MINIMUM IN
MATERIALSTEEL COMP 1074 OR STEEL COMP 1075 OVERALL
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 3
6883161Reference document
Same NSN cross-reference
Reference document — Secondary reference
6831645Reference document
Same NSN cross-reference
Reference document — Secondary reference
423338C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is JL39788?
JL39788 is a SEAT,BEARING.
What parts can replace JL39788?
There are 3 known substitutes for JL39788: 6883161, 6831645, 423338C1. Substitute compatibility should be verified for your specific system.
What is the NSN for JL39788?
JL39788 is cataloged in the U.S. Government catalog under NSN 3110-00-005-0876. 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.