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ST4M123-6 — BEARING,PLAIN,SELF-ALIGNING

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

ST4M123-6: BEARING,PLAIN,SELF-ALIGNING.

The BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OUTER RACE MEMBER, bore_diameter: 0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN, style_designator: WITHOUT INSERT OR LINER WITH STAKING GROOVE, inner_member_width: 0.4010 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN, outer_member_width: 0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN, static_radial_load_rating: 11400 POUNDS LBS. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-324-6626, 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
ST4M123-6
NSN: 3120-00-324-6626
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 16746 — RBC SPECLINE INC DBA SPECLINE INC (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OUTER RACE MEMBER
bore_diameter0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
style_designatorWITHOUT INSERT OR LINER WITH STAKING GROOVE
inner_member_width0.4010 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN
outer_member_width0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
static_radial_load_rating11400 POUNDS LBS
outer_member_outside_diameter0.8120 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN
material_document_and_classificationMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
NSN3120-00-324-6626
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: ST4M123-6 · 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: 0.4010 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN
•
OUTER MEMBER WIDTH: 0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: WITHOUT INSERT OR LINER WITH STAKING GROOVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
•
STATIC RADIAL LOAD RATING: 11400 POUNDS LBS
•
BORE DIAMETER: 0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
•
MATERIAL: GREASE LUBRICATION
TECHNICAL CHARACTERISTICS
INNER MEMBER WIDTH0.4010 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN
OUTER MEMBER WIDTH0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
STYLE DESIGNATORWITHOUT INSERT OR LINER WITH STAKING GROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
STATIC RADIAL LOAD RATING11400 POUNDS LBS
BORE DIAMETER0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
MATERIALGREASE LUBRICATION
MATERIALCOPPER ALLOY 172 OR COPPER ALLOY 173 INNER MEMBER
MATERIALSTEEL COMP 630 OUTER RACE MEMBER
OUTER MEMBER OUTSIDE DIAMETER0.8120 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 7
BNG06H-123Reference document
Same NSN cross-reference
Reference document — Secondary reference
SBU12RZH26-4AReference document
Same NSN cross-reference
Reference document — Secondary reference
KSB6-27Reference document
Same NSN cross-reference
Reference document — Secondary reference
SBU12RZH26-3AReference document
Same NSN cross-reference
Reference document — Secondary reference
ASBB6VReference document
Same NSN cross-reference
Reference document — Secondary reference
BSSN6-2025Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST4M123-6?
ST4M123-6 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace ST4M123-6?
There are 7 known substitutes for ST4M123-6: BNG06H-123, SBU12RZH26-4A, KSB6-27 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST4M123-6?
ST4M123-6 is cataloged in the U.S. Government catalog under NSN 3120-00-324-6626. 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.