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Technical Data Sheet

SFR3STAX23K6DB21/2 — BEARING,BALL,DUPLEX

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

SFR3STAX23K6DB21/2: BEARING,BALL,DUPLEX.

The BEARING,BALL,DUPLEX is a the manufacturer industrial component. Key specifications include material: PLASTIC PHENOLIC RETAINER, bore_diameter: 0.1860 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN, overall_width: 0.3900 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM IN, load_direction: RADIAL, bearing_preload_rating: 2.0 POUNDS NOMINAL LBS, overall_outside_diameter: 0.49985 INCHES MINIMUM AND 0.50000 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-044-5301, 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
SFR3STAX23K6DB21/2
NSN: 3110-00-044-5301
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 70854 — SCHAEFFLER AEROSPACE USA CORP DIV SCHAEFFLER AEROSPACE USA CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC PHENOLIC RETAINER
bore_diameter0.1860 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
overall_width0.3900 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM IN
load_directionRADIAL
shield_quantity2
bearing_preload_rating2.0 POUNDS NOMINAL LBS
overall_outside_diameter0.49985 INCHES MINIMUM AND 0.50000 INCHES MAXIMUM IN
standard_tolerance_designationABEC NO.7
NSN3110-00-044-5301
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: SFR3STAX23K6DB21/2 · 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
•
BEARING PRELOAD RATING: 2.0 POUNDS NOMINAL LBS
•
SHIELD QUANTITY: 2
•
OVERALL OUTSIDE DIAMETER: 0.49985 INCHES MINIMUM AND 0.50000 INCHES MAXIMUM IN
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.7
•
BORE DIAMETER: 0.1860 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OUTER RING
TECHNICAL CHARACTERISTICS
BEARING PRELOAD RATING2.0 POUNDS NOMINAL LBS
SHIELD QUANTITY2
OVERALL WIDTH0.3900 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER0.49985 INCHES MINIMUM AND 0.50000 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.7
BORE DIAMETER0.1860 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OUTER RING
MATERIALSTEEL CORROSION RESISTING INNER RING
MATERIALSTEEL CORROSION RESISTING BALL
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 1
131-0213-001Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 SFR3STAX23K6DB21/2?
SFR3STAX23K6DB21/2 is a BEARING,BALL,DUPLEX.
What parts can replace SFR3STAX23K6DB21/2?
There is 1 known substitute for SFR3STAX23K6DB21/2: 131-0213-001. Substitute compatibility should be verified for your specific system.
What is the NSN for SFR3STAX23K6DB21/2?
SFR3STAX23K6DB21/2 is cataloged in the U.S. Government catalog under NSN 3110-00-044-5301. 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.