PartsTable
Technical Data Sheet
MS21231-3 ✓ 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: STEEL COMP 440C INNER MEMBER, bore_diameter: 0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER, special_features: PASSIVATION OPTIONAL, style_designator: WITH INSERT AND/OR LINER, surface_treatment: PASSIVATE INNER MEMBER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-177-3039, 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
MS21231-3
NSN: 3120-01-177-3039
FSC: 3120
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 440C INNER MEMBER
bore_diameter0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
hardness_rating28.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER
special_featuresPASSIVATION OPTIONAL
style_designatorWITH INSERT AND/OR LINER
surface_treatmentPASSIVATE INNER MEMBER
inner_member_width0.4350 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
outer_member_width0.3220 INCHES MINIMUM AND 0.3320 INCHES MAXIMUM IN
static_radial_load_rating2500 POUNDS LBS
outer_member_outside_diameter0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
material_document_and_classificationAMS 5630 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
NSN3120-01-177-3039
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MS21231-3 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5630 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
MATERIAL: STEEL COMP 440C INNER MEMBER
STATIC RADIAL LOAD RATING: 2500 POUNDS LBS
INNER MEMBER WIDTH: 0.4350 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
SURFACE TREATMENT: PASSIVATE INNER MEMBER
STYLE DESIGNATOR: WITH INSERT AND/OR LINER
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESPASSIVATION OPTIONAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5630 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
MATERIALSTEEL COMP 440C INNER MEMBER
STATIC RADIAL LOAD RATING2500 POUNDS LBS
INNER MEMBER WIDTH0.4350 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE INNER MEMBER
STYLE DESIGNATORWITH INSERT AND/OR LINER
MATERIALSTEEL COMP 630 OUTER RACE MEMBER
OUTER MEMBER WIDTH0.3220 INCHES MINIMUM AND 0.3320 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OUTER RACE MEMBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
C5533Interchangeable
interchangeable cross-reference
interchangeable
14HInterchangeable
interchangeable cross-reference
interchangeable
KR4-CWBInterchangeable
interchangeable cross-reference
interchangeable
MS21231-4Interchangeable
interchangeable cross-reference
interchangeable
AS14102Interchangeable
interchangeable cross-reference
interchangeable
KR-7CWBInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
Ready to buy MS21231-3?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MS21231-3?
MS21231-3 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace MS21231-3?
There are 28 known substitutes for MS21231-3: C5533, 14H, KR4-CWB and 25 more. Substitute compatibility should be verified for your specific system.
Is MS21231-3 still available?
MS21231-3 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MS21231-3