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Technical Data Sheet
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3903-00 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

3903-00: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: HEATER RESIDUE DETE PORTABLE HOLDS 2 SNAP DEVICES 110V AC V. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-271-0204, 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
3903-00
NSN: 3110-00-271-0204
NIINs: 002710204, 014549229
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 71956 — RELIANCE ELECTRIC COMPANY DBA RELIANCE & DODGE BRANDS (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyHEATER RESIDUE DETE PORTABLE HOLDS 2 SNAP DEVICES 110V AC V
NSN3110-00-271-0204
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3903-00 · 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: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 150.00 MILLIMETERS NOMINAL MM
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH24.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER150.00 MILLIMETERS NOMINAL MM
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
BORE SHAPESTRAIGHT
NONDEFINITIVE SPEC/STD DATAIII TYPE AND 00 GRADE AND 4 CLASS
LOAD DIRECTIONRADIAL
SUBSTITUTES & CROSS-REFERENCES 4
43L20Reference document
Same NSN cross-reference
Reference document — Secondary reference
635626Reference document
Same NSN cross-reference
Reference document — Secondary reference
FFB171/03J20G3CSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FFB171Reference document
Same NSN cross-reference
Reference document — Identification 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 3903-00?
3903-00 is a BEARING,BALL,ANNULAR.
What parts can replace 3903-00?
There are 4 known substitutes for 3903-00: 43L20, 635626, FFB171/03J20G3C and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3903-00?
3903-00 is cataloged in the U.S. Government catalog under NSN 3110-00-271-0204. 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.