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B28-LSS — BEARING,PLAIN,SELF-ALIGNING

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

B28-LSS: BEARING,PLAIN,SELF-ALIGNING.

The BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL OUTER RACE MEMBER, bore_diameter: 1.7500 INCHES NOMINAL IN, special_features: TWO SEALS, style_designator: WITHOUT INSERT OR LINER, inner_member_width: 1.5310 INCHES NOMINAL IN, outer_member_width: 1.3120 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-252-5255, 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
B28-LSS
NSN: 3120-01-252-5255
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 51588 — RBC BEARINGS INCORPORATED DIV WEST TRENTON DIVISION (USA)
SPECIFICATIONS
materialSTEEL OUTER RACE MEMBER
bore_diameter1.7500 INCHES NOMINAL IN
special_featuresTWO SEALS
style_designatorWITHOUT INSERT OR LINER
inner_member_width1.5310 INCHES NOMINAL IN
outer_member_width1.3120 INCHES NOMINAL IN
outer_member_outside_diameter2.8125 INCHES NOMINAL IN
NSN3120-01-252-5255
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: B28-LSS · 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: 1.5310 INCHES NOMINAL IN
•
OUTER MEMBER WIDTH: 1.3120 INCHES NOMINAL IN
•
STYLE DESIGNATOR: WITHOUT INSERT OR LINER
•
BORE DIAMETER: 1.7500 INCHES NOMINAL IN
•
MATERIAL: STEEL INNER MEMBER
•
OUTER MEMBER OUTSIDE DIAMETER: 2.8125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INNER MEMBER WIDTH1.5310 INCHES NOMINAL IN
OUTER MEMBER WIDTH1.3120 INCHES NOMINAL IN
STYLE DESIGNATORWITHOUT INSERT OR LINER
SPECIAL FEATURESTWO SEALS
BORE DIAMETER1.7500 INCHES NOMINAL IN
MATERIALSTEEL INNER MEMBER
MATERIALSTEEL OUTER RACE MEMBER
OUTER MEMBER OUTSIDE DIAMETER2.8125 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B28-LSS?
B28-LSS is a BEARING,PLAIN,SELF-ALIGNING.
What is the NSN for B28-LSS?
B28-LSS is cataloged in the U.S. Government catalog under NSN 3120-01-252-5255. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.