PartsTable
Technical Data Sheet
HG9MILG3278 ✓ 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: 0.5620 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN, style_designator: WITHOUT INSERT OR LINER, surface_treatment: CHROMIUM INNER MEMBER, inner_member_width: 0.5570 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM IN, outer_member_width: 0.4320 INCHES MINIMUM AND 0.4420 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 3120-00-287-8602, 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
HG9MILG3278
NSN: 3120-00-287-8602
FSC: 3120
CAGE: 02758 — U S BEARINGS (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 INNER MEMBER
bore_diameter0.5620 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
style_designatorWITHOUT INSERT OR LINER
surface_treatmentCHROMIUM INNER MEMBER
inner_member_width0.5570 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM IN
outer_member_width0.4320 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN
lubrication_featurePERFORATION OUTER RACE MEMBER
outer_member_outside_diameter1.0932 INCHES MINIMUM AND 1.0937 INCHES MAXIMUM IN
NSN3120-00-287-8602
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: HG9MILG3278 · 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: PERFORATION OUTER RACE MEMBER
MATERIAL: COPPER ALLOY OUTER RACE MEMBER
SURFACE TREATMENT: CHROMIUM INNER MEMBER
STYLE DESIGNATOR: WITHOUT INSERT OR LINER
OUTER MEMBER OUTSIDE DIAMETER: 1.0932 INCHES MINIMUM AND 1.0937 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
LUBRICATION FEATUREPERFORATION OUTER RACE MEMBER
MATERIALCOPPER ALLOY OUTER RACE MEMBER
SURFACE TREATMENTCHROMIUM INNER MEMBER
LUBRICATION FEATUREGROOVE INTERNAL OUTER MEMBER
STYLE DESIGNATORWITHOUT INSERT OR LINER
LUBRICATION FEATUREGROOVE EXTERNAL OUTER MEMBER
MATERIALSTEEL COMP E52100 INNER MEMBER
OUTER MEMBER OUTSIDE DIAMETER1.0932 INCHES MINIMUM AND 1.0937 INCHES MAXIMUM IN
OUTER MEMBER WIDTH0.4320 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN
BORE DIAMETER0.5620 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
RE-52Interchangeable
interchangeable cross-reference
interchangeable
359-SInterchangeable
interchangeable cross-reference
interchangeable
159-150663-01Interchangeable
interchangeable cross-reference
interchangeable
VC1GCInterchangeable
interchangeable cross-reference
interchangeable
RB9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HG9MILG3278?
HG9MILG3278 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace HG9MILG3278?
There are 5 known substitutes for HG9MILG3278: RE-52, 359-S, 159-150663-01 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HG9MILG3278?
HG9MILG3278 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-287-8602. This indicates validated use in U.S. government and defense supply chains.
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