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Technical Data Sheet
PartsTable / COMPONENT / 20057A
20057A ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include end_item_identification: 26 FT TRAILER-ABLE AIDS TO NAVIGATION P/N 26TANB FT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-358-2258, 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
20057A
NSN: 3120-00-358-2258
FSC: 3120
CAGE: 28265 — HERCULES ENGINE CO INC (USA)
SPECIFICATIONS
end_item_identification26 FT TRAILER-ABLE AIDS TO NAVIGATION P/N 26TANB FT
NSN3120-00-358-2258
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 20057A · 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
•
CORNER SHAPE: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
•
MATERIAL: TIN ALLOY UNS L13870 INNER LAYER
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 1 HOLE
TECHNICAL CHARACTERISTICS (FLIS)
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
SPECIAL FEATURESFLANGE FACE HAS 0.2500 IN RADIUS GROOVE ACROSS DIAMETER IN
MATERIALTIN ALLOY UNS L13870 INNER LAYER
MATERIALSTEEL OUTER LAYER
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 HOLE
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
SURFACE GROOVE LOCATION AND QUANTITY1 EXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
B2001Interchangeable
interchangeable cross-reference
interchangeable
20057Interchangeable
interchangeable cross-reference
interchangeable
2410 57/64Interchangeable
interchangeable cross-reference
interchangeable
C12238Interchangeable
interchangeable cross-reference
interchangeable
110 57/64Interchangeable
interchangeable cross-reference
interchangeable
AR13S4601-257520ALT2PC479Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20057A?
20057A is a BEARING,SLEEVE.
What parts can replace 20057A?
There are 21 known substitutes for 20057A: B2001, 20057, 2410 57/64 and 18 more. Substitute compatibility should be verified for your specific system.
Is 20057A still available?
20057A 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