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Technical Data Sheet
PartsTable / COMPONENT / B5020R
B5020R ✓ 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 material: COPPER ALLOY 938 OVERALL, corner_shape: SQUARE ALL CORNERS, hole_diameter: 0.3880 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM AND 0.3900 INCHES NOMINAL FIRST IN, overall_length: 5.5000 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SEGMENTED, PLAIN, NO OUTSIDE FLANGES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-339-3641, 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
B5020R
NSN: 3120-00-339-3641
FSC: 3120
CAGE: 02280 — AMERICAN HOIST AND DERRICK CO
SPECIFICATIONS
materialCOPPER ALLOY 938 OVERALL
corner_shapeSQUARE ALL CORNERS
hole_diameter0.3880 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM AND 0.3900 INCHES NOMINAL FIRST IN
overall_length5.5000 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSEGMENTED, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter3.4440 INCHES MINIMUM AND 3.4470 INCHES MAXIMUM IN
body_outside_diameter4.4360 INCHES MINIMUM AND 4.4370 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED DOUBLE LOOP
antirotation/lubrication_type_and_quantity5 HOLE
NSN3120-00-339-3641
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: B5020R · 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 ALL CORNERS
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 5 HOLE
•
SURFACE FINISH: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
•
BODY INSIDE DIAMETER: 3.4440 INCHES MINIMUM AND 3.4470 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 4.4360 INCHES MINIMUM AND 4.4370 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 938 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CORNER SHAPESQUARE ALL CORNERS
ANTIROTATION/LUBRICATION TYPE AND QUANTITY5 HOLE
SURFACE FINISH125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF BODY
BODY INSIDE DIAMETER3.4440 INCHES MINIMUM AND 3.4470 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER4.4360 INCHES MINIMUM AND 4.4370 INCHES MAXIMUM IN
SURFACE FINISH125.0 MICROINCHES LEFT END SURFACE OF BODY
MATERIALCOPPER ALLOY 938 OVERALL
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
LUBRICANT ACCOMMODATION STYLEGROOVED DOUBLE LOOP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
7380Interchangeable
interchangeable cross-reference
interchangeable
WM2-24Interchangeable
interchangeable cross-reference
interchangeable
11-6-156613-0Interchangeable
interchangeable cross-reference
interchangeable
4914877-02Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-26922Interchangeable
interchangeable cross-reference
interchangeable
AM24T8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B5020R?
B5020R is a BEARING,SLEEVE.
What parts can replace B5020R?
There are 18 known substitutes for B5020R: 7380, WM2-24, 11-6-156613-0 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B5020R?
B5020R is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-339-3641. 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