PartsTable
Technical Data Sheet
PartsTable / COMPONENT / E554-21-1
E554-21-1 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BEARING HALF,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OUTER LAYER, corner_shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER, hole_diameter: 0.2500 INCHES NOMINAL FIRST IN, overall_length: 1.6490 INCHES MINIMUM AND 1.6510 INCHES MAXIMUM IN, style_designator: HALF SLEEVE, EXTERNAL FLANGES BOTH ENDS, left_flange_width: 0.1310 INCHES MINIMUM AND 0.1330 INCHES MAXIMUM 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 3120-00-376-8543, 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
E554-21-1
NSN: 3120-00-376-8543
FSC: 3120
CAGE: 35301 — DRESSER INDUSTRIES INC LEROI DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OUTER LAYER
corner_shapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
hole_diameter0.2500 INCHES NOMINAL FIRST IN
overall_length1.6490 INCHES MINIMUM AND 1.6510 INCHES MAXIMUM IN
style_designatorHALF SLEEVE, EXTERNAL FLANGES BOTH ENDS
left_flange_width0.1310 INCHES MINIMUM AND 0.1330 INCHES MAXIMUM IN
right_flange_width0.1310 INCHES MINIMUM AND 0.1330 INCHES MAXIMUM IN
body_inside_diameter3.7480 INCHES MINIMUM AND 3.7490 INCHES MAXIMUM IN
body_outside_diameter4.0020 INCHES MINIMUM AND 4.0030 INCHES MAXIMUM IN
left_flange_outside_diameter4.9844 INCHES MINIMUM AND 5.0469 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED CIRCULAR
right_flange_outside_diameter4.9844 INCHES MINIMUM AND 5.0469 INCHES MAXIMUM IN
NSN3120-00-376-8543
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: E554-21-1 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE GROOVE LOCATION AND QUANTITY: 1 INTERNAL
•
MATERIAL: COPPER ALLOY INTERMEDIATE LAYER
•
BODY OUTSIDE DIAMETER: 4.0020 INCHES MINIMUM AND 4.0030 INCHES MAXIMUM IN
•
CORNER SHAPE: ROUND RIGHT FLANGE BODY CORNER
•
BODY INSIDE DIAMETER: 3.7480 INCHES MINIMUM AND 3.7490 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE GROOVE LOCATION AND QUANTITY1 INTERNAL
MATERIALCOPPER ALLOY INTERMEDIATE LAYER
BODY OUTSIDE DIAMETER4.0020 INCHES MINIMUM AND 4.0030 INCHES MAXIMUM IN
CORNER SHAPEROUND RIGHT FLANGE BODY CORNER
CORNER SHAPESQUARE RIGHT FLANGE OUTSIDE LEFT CORNER
CORNER SHAPEROUND INSIDE LEFT CORNER
BODY INSIDE DIAMETER3.7480 INCHES MINIMUM AND 3.7490 INCHES MAXIMUM IN
CORNER SHAPEROUND LEFT FLANGE BODY CORNER
LUBRICANT ACCOMMODATION STYLEGROOVED CIRCULAR
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
21464Interchangeable
interchangeable cross-reference
interchangeable
BA10082-13Interchangeable
interchangeable cross-reference
interchangeable
AGC5AInterchangeable
interchangeable cross-reference
interchangeable
142630Interchangeable
interchangeable cross-reference
interchangeable
TYPE W, ROUND, 4 COND, 2/0 AWGInterchangeable
interchangeable cross-reference
interchangeable
V5054Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E554-21-1?
E554-21-1 is a BEARING HALF,SLEEVE.
What parts can replace E554-21-1?
There are 9 known substitutes for E554-21-1: 21464, BA10082-13, AGC5A and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E554-21-1?
E554-21-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-376-8543. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026