PartsTable
Technical Data Sheet
LS8MILG3278 ✓ 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: COPPER ALLOY RACE INSERT, bore_diameter: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, hardness_rating: 60.0 ROCKWELL C NOMINAL INNER MEMBER, style_designator: WITH INSERT AND/OR LINER, surface_treatment: CADMIUM OUTER RACE MEMBER, inner_member_width: 0.6820 INCHES MINIMUM AND 0.6870 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-662-1976, 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
LS8MILG3278
NSN: 3120-00-662-1976
FSC: 3120
CAGE: 73134 — ROLLER BEARING COMPANY OF AMERICA, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY RACE INSERT
bore_diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
hardness_rating60.0 ROCKWELL C NOMINAL INNER MEMBER
style_designatorWITH INSERT AND/OR LINER
surface_treatmentCADMIUM OUTER RACE MEMBER
inner_member_width0.6820 INCHES MINIMUM AND 0.6870 INCHES MAXIMUM IN
outer_member_width0.5285 INCHES NOMINAL IN
lubrication_featureGROOVE EXTERNAL OUTER MEMBER
outer_member_outside_diameter1.3120 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM IN
NSN3120-00-662-1976
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: LS8MILG3278 · 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
OUTER MEMBER WIDTH: 0.5285 INCHES NOMINAL IN
INNER MEMBER WIDTH: 0.6820 INCHES MINIMUM AND 0.6870 INCHES MAXIMUM IN
LUBRICATION FEATURE: GROOVE EXTERNAL OUTER MEMBER
SURFACE TREATMENT: CADMIUM OUTER RACE MEMBER
MATERIAL: STEEL COMP E52100 INNER MEMBER
HARDNESS RATING: 60.0 ROCKWELL C NOMINAL INNER MEMBER
STYLE DESIGNATOR: WITH INSERT AND/OR LINER
TECHNICAL CHARACTERISTICS (FLIS)
OUTER MEMBER WIDTH0.5285 INCHES NOMINAL IN
INNER MEMBER WIDTH0.6820 INCHES MINIMUM AND 0.6870 INCHES MAXIMUM IN
LUBRICATION FEATUREGROOVE EXTERNAL OUTER MEMBER
LUBRICATION FEATUREPERFORATION OUTER RACE MEMBER
SURFACE TREATMENTCADMIUM OUTER RACE MEMBER
MATERIALSTEEL COMP E52100 INNER MEMBER
HARDNESS RATING60.0 ROCKWELL C NOMINAL INNER MEMBER
STYLE DESIGNATORWITH INSERT AND/OR LINER
BORE DIAMETER0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
LUBRICATION FEATUREGROOVE INTERNAL OUTER MEMBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
100359Interchangeable
interchangeable cross-reference
interchangeable
110303Interchangeable
interchangeable cross-reference
interchangeable
LL-H58-4207Interchangeable
interchangeable cross-reference
interchangeable
HD-47Interchangeable
Same NIIN cross-reference
interchangeable
LS8-485Interchangeable
Same NIIN cross-reference
interchangeable
647A136-005Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LS8MILG3278?
LS8MILG3278 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace LS8MILG3278?
There are 6 known substitutes for LS8MILG3278: 100359, 110303, LL-H58-4207 and 3 more. Substitute compatibility should be verified for your specific system.
Is LS8MILG3278 still available?
LS8MILG3278 is currently cancelled.
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