PartsTable
Technical Data Sheet
RB-8AS ✓ 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,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 INNER MEMBER, bore_diameter: 0.4995 INCHES MINIMUM AND 0.5005 INCHES MAXIMUM IN, style_designator: WITHOUT INSERT OR LINER, surface_treatment: CADMIUM OUTER RACE MEMBER, inner_member_width: 0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, outer_member_width: 0.3900 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 3120-00-675-5270, 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
RB-8AS
NSN: 3120-00-675-5270
FSC: 3120
CAGE: 99528 — RADIAL BEARING CORPORATION DBA RADIAL BEARING CORP OF CONNECTICU DIV RADIAL BEARING LLC (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 INNER MEMBER
bore_diameter0.4995 INCHES MINIMUM AND 0.5005 INCHES MAXIMUM IN
style_designatorWITHOUT INSERT OR LINER
surface_treatmentCADMIUM OUTER RACE MEMBER
inner_member_width0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
outer_member_width0.3900 INCHES NOMINAL IN
lubrication_featurePERFORATION INNER MEMBER
outer_member_outside_diameter1.0620 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
NSN3120-00-675-5270
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: RB-8AS · 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
LUBRICATION FEATURE: GROOVE INTERNAL INNER MEMBER
MATERIAL: COPPER ALLOY INNER LAYER
OUTER MEMBER WIDTH: 0.3900 INCHES NOMINAL IN
SURFACE TREATMENT: CHROMIUM INNER MEMBER
TECHNICAL CHARACTERISTICS (FLIS)
LUBRICATION FEATUREGROOVE INTERNAL INNER MEMBER
LUBRICATION FEATUREGROOVE INTERNAL OUTER MEMBER
MATERIALCOPPER ALLOY INNER LAYER
LUBRICATION FEATUREGROOVE EXTERNAL OUTER MEMBER
MATERIALSTEEL COMP E52100 INNER MEMBER
MATERIALCOPPER ALLOY OUTER RACE MEMBER
OUTER MEMBER WIDTH0.3900 INCHES NOMINAL IN
SURFACE TREATMENTCHROMIUM INNER MEMBER
STYLE DESIGNATORWITHOUT INSERT OR LINER
LUBRICATION FEATUREPERFORATION INNER MEMBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
MS27640-8GInterchangeable
interchangeable cross-reference
interchangeable
KS8LTG75AInterchangeable
interchangeable cross-reference
interchangeable
KS8Interchangeable
interchangeable cross-reference
interchangeable
55586Interchangeable
interchangeable cross-reference
interchangeable
850823Interchangeable
interchangeable cross-reference
interchangeable
5F9576Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RB-8AS?
RB-8AS is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace RB-8AS?
There are 15 known substitutes for RB-8AS: MS27640-8G, KS8LTG75A, KS8 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RB-8AS?
RB-8AS is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-675-5270. This indicates validated use in U.S. government and defense supply chains.
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