PartsTable
Technical Data Sheet
LS5M1LG3278 ✓ 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: 0.3120 INCHES MINIMUM AND 0.3125 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: 0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-662-1965, 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
LS5M1LG3278
NSN: 3120-00-662-1965
FSC: 3120
CAGE: 73134 — ROLLER BEARING COMPANY OF AMERICA, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY RACE INSERT
bore_diameter0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
hardness_rating60.0 ROCKWELL C NOMINAL INNER MEMBER
style_designatorWITH INSERT AND/OR LINER
surface_treatmentCADMIUM OUTER RACE MEMBER
inner_member_width0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
outer_member_width0.3080 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN
lubrication_featurePERFORATION OUTER RACE MEMBER
static_radial_load_rating6554 POUNDS LBS
outer_member_outside_diameter0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
NSN3120-00-662-1965
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: LS5M1LG3278 · 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
INNER MEMBER WIDTH: 0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
BORE DIAMETER: 0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
OUTER MEMBER WIDTH: 0.3080 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN
OUTER MEMBER OUTSIDE DIAMETER: 0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
SURFACE TREATMENT: CADMIUM OUTER RACE MEMBER
LUBRICATION FEATURE: GROOVE EXTERNAL OUTER MEMBER
MATERIAL: STEEL COMP E52100 INNER MEMBER
HARDNESS RATING: 60.0 ROCKWELL C NOMINAL INNER MEMBER
TECHNICAL CHARACTERISTICS (FLIS)
INNER MEMBER WIDTH0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
BORE DIAMETER0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
OUTER MEMBER WIDTH0.3080 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN
OUTER MEMBER OUTSIDE DIAMETER0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OUTER RACE MEMBER
LUBRICATION FEATUREGROOVE EXTERNAL OUTER MEMBER
MATERIALSTEEL COMP E52100 INNER MEMBER
HARDNESS RATING60.0 ROCKWELL C NOMINAL INNER MEMBER
MATERIALSTEEL OUTER RACE MEMBER
SURFACE TREATMENTCHROMIUM INNER MEMBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
956857Interchangeable
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LS-5 2IN.Interchangeable
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U303933106Interchangeable
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LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LS5M1LG3278?
LS5M1LG3278 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace LS5M1LG3278?
There are 9 known substitutes for LS5M1LG3278: 956857, W368, 3201XR1A and 6 more. Substitute compatibility should be verified for your specific system.
Is LS5M1LG3278 still available?
LS5M1LG3278 is currently cancelled.
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