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S3927B — BEARING,ROLLER,SELF-ALIGNING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

S3927B: BEARING,ROLLER,SELF-ALIGNING.

The BEARING,ROLLER,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 ROLLER, bore_diameter: 9.4483 INCHES MINIMUM AND 9.4488 INCHES MAXIMUM IN, overall_width: 2.3922 INCHES MINIMUM AND 2.4442 INCHES MAXIMUM IN, surface_finish: GROUND, special_features: BEARING TO BE FILLED AND ALL EXTERIOR SURFACES WIPED WITH MIL-G-81322 GREASE, style_designator: DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-321-8802, 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
S3927B
NSN: 3110-00-321-8802
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 ROLLER
bore_diameter9.4483 INCHES MINIMUM AND 9.4488 INCHES MAXIMUM IN
overall_width2.3922 INCHES MINIMUM AND 2.4442 INCHES MAXIMUM IN
seal_quantity1
surface_finishGROUND
special_featuresBEARING TO BE FILLED AND ALL EXTERIOR SURFACES WIPED WITH MIL-G-81322 GREASE
style_designatorDOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
bearing_seal_typeCONTACT
internal_clearance0.0017 INCHES MINIMUM RADIAL AND 0.0027 INCHES MAXIMUM RADIAL IN
overall_outside_diameter12.5978 INCHES MINIMUM AND 12.5984 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
standard_tolerance_designationRBEC NO.5
NSN3110-00-321-8802
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: S3927B · 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: MACHINED
•
BEARING SEAL TYPE: CONTACT
•
INTERNAL CLEARANCE: 0.0017 INCHES MINIMUM RADIAL AND 0.0027 INCHES MAXIMUM RADIAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 12.5978 INCHES MINIMUM AND 12.5984 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMACHINED
BEARING SEAL TYPECONTACT
INTERNAL CLEARANCE0.0017 INCHES MINIMUM RADIAL AND 0.0027 INCHES MAXIMUM RADIAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORDOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE
OVERALL WIDTH2.3922 INCHES MINIMUM AND 2.4442 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER12.5978 INCHES MINIMUM AND 12.5984 INCHES MAXIMUM IN
SPECIAL FEATURESBEARING TO BE FILLED AND ALL EXTERIOR SURFACES WIPED WITH MIL-G-81322 GREASE
SEAL QUANTITY1
STANDARD TOLERANCE DESIGNATIONRBEC NO.5
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 2
2920413Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
562225Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S3927B?
S3927B is a BEARING,ROLLER,SELF-ALIGNING.
What parts can replace S3927B?
There are 2 known substitutes for S3927B: 2920413, 562225. Substitute compatibility should be verified for your specific system.
What is the NSN for S3927B?
S3927B is cataloged in the U.S. Government catalog under NSN 3110-00-321-8802. This indicates validated use in U.S. government and defense supply chains.
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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.