PartsTable
Technical Data Sheet
21879 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The RETAINER,ELECTRICAL SWITCH is a the manufacturer industrial component. Key specifications include guide: NOT INCLUDED, diameter: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN, material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, body_style: HOLE MOUNTED, body_width: 0.400 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8522, 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
MRO MRO_GENERAL 21879
NSN: 3110-00-144-8522
FSC: 3110
CAGE: 61038 — VICKERS INC (USA)
SPECIFICATIONS
guideNOT INCLUDED
diameter0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
body_styleHOLE MOUNTED
body_width0.400 INCHES NOMINAL IN
bore_shapeSTRAIGHT
drive_typeSLOTTED
flute_typeINTEGRAL
shank_typeMORSE TAPER
body_height0.625 INCHES NOMINAL IN
body_length1.094 INCHES NOMINAL IN
NSN3110-00-144-8522
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21879 · 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
OVERALL OUTSIDE DIAMETER: 47.00 MILLIMETERS NOMINAL MM
BORE DIAMETER: 25.00 MILLIMETERS NOMINAL MM
MATERIAL: STEEL INNER RING
LOAD DIRECTION: RADIAL
INTERNAL FIT-UP DESIGNATION: STANDARD
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER47.00 MILLIMETERS NOMINAL MM
BORE DIAMETER25.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL INNER RING
MATERIALSTEEL OUTER RING
MATERIALSTEEL BALL
LOAD DIRECTIONRADIAL
INTERNAL FIT-UP DESIGNATIONSTANDARD
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE SHAPESTRAIGHT
OVERALL WIDTH12.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
716-044011Interchangeable
interchangeable cross-reference
interchangeable
51-10570Interchangeable
interchangeable cross-reference
interchangeable
F504Interchangeable
interchangeable cross-reference
interchangeable
4035-1187Interchangeable
interchangeable cross-reference
interchangeable
20676Interchangeable
interchangeable cross-reference
interchangeable
50-10167Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21879?
21879 is a RETAINER,ELECTRICAL SWITCH. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21879?
There are 24 known substitutes for 21879: 716-044011, 51-10570, F504 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21879?
21879 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8522. This indicates validated use in U.S. government and defense supply chains.
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