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Technical Data Sheet
PartsTable / COMPONENT / E21
E21 ✓ Verified by PartsTable
— · TAPERED BEARING
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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, flange_width: 0.0280 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN, bore_diameter: 0.1249 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN, overall_width: 0.1552 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN, alignment_type: RIGID. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-055-1043, 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
E21
NSN: 3110-00-055-1043
FSC: 3110
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
flange_width0.0280 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN
bore_diameter0.1249 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
overall_width0.1552 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN
seal_quantity2
alignment_typeRIGID
load_directionRADIAL
overall_height0.8125 INCHES NOMINAL IN
surface_finishGROUND
special_featuresRETAINERLESS TYPE
style_designatorGROOVED RACE SURFACE, BANDED OD
NSN3110-00-055-1043
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: E21 · 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
•
BORE DIAMETER: 0.1249 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
FLANGE WIDTH: 0.0280 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN
•
SURFACE FINISH: GROUND
•
OUTER RING OUTSIDE DIAMETER: 0.3748 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
•
FLANGE OUTSIDE DIAMETER: 0.4350 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.1249 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
OVERALL WIDTH0.1552 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
FLANGE WIDTH0.0280 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN
SURFACE FINISHGROUND
OUTER RING OUTSIDE DIAMETER0.3748 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
FLANGE OUTSIDE DIAMETER0.4350 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
SEAL QUANTITY2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
0502 0106 00Interchangeable
interchangeable cross-reference
interchangeable
0MD13-876BInterchangeable
interchangeable cross-reference
interchangeable
D21Interchangeable
interchangeable cross-reference
interchangeable
E21Interchangeable
interchangeable cross-reference
interchangeable
BS5-1639 PIECE 12Interchangeable
interchangeable cross-reference
interchangeable
E21VInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E21?
E21 is a BEARING,BALL,ANNULAR.
What parts can replace E21?
There are 12 known substitutes for E21: 0502 0106 00, 0MD13-876B, D21 and 9 more. Substitute compatibility should be verified for your specific system.
Is E21 still available?
E21 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026