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Technical Data Sheet
PartsTable / COMPONENT / MBS-51B
MBS-51B ✓ 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 BELT,VEHICULAR SAFETY is a the manufacturer industrial component. Key specifications include document_type: MFR DRAWING, document_source: 01227, document_identification: DSG1063, component_document_origin: INDUSTRIAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-306-5331, 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
MBS-51B
NSN: 3120-00-306-5331
FSC: 3120
CAGE: 76255 — MCQUAY-NORRIS INC OEM DIV AN SKF INDUSTRIES CO
SPECIFICATIONS
document_typeMFR DRAWING
document_source01227
component_quantity4
document_identificationDSG1063
component_document_originINDUSTRIAL
component_document_page_number1
NSN3120-00-306-5331
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MBS-51B · 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
•
COMPONENT QUANTITY: 4
•
COMPONENT DOCUMENT ORIGIN: INDUSTRIAL
•
COMPONENT DOCUMENT PAGE NUMBER: 1
•
DOCUMENT IDENTIFICATION: DSG1063
•
DOCUMENT SOURCE: 01227
•
DOCUMENT TYPE: MFR DRAWING
TECHNICAL CHARACTERISTICS (FLIS)
COMPONENT QUANTITY4
COMPONENT DOCUMENT ORIGININDUSTRIAL
COMPONENT DOCUMENT PAGE NUMBER1
DOCUMENT IDENTIFICATIONDSG1063
DOCUMENT SOURCE01227
DOCUMENT TYPEMFR DRAWING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
0042846-6Interchangeable
interchangeable cross-reference
interchangeable
415MInterchangeable
interchangeable cross-reference
interchangeable
1415Interchangeable
interchangeable cross-reference
interchangeable
MB0120MSInterchangeable
interchangeable cross-reference
interchangeable
S099Interchangeable
interchangeable cross-reference
interchangeable
996378Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MBS-51B?
MBS-51B is a BELT,VEHICULAR SAFETY.
What parts can replace MBS-51B?
There are 12 known substitutes for MBS-51B: 0042846-6, 415M, 1415 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MBS-51B?
MBS-51B is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-306-5331. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026