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Technical Data Sheet
PartsTable / COMPONENT / 81127S41-20956ALT1PC7
81127S41-20956ALT1PC7 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include material: OIL LUBRICATING LUBRICATION, overall_length: 6.3700 INCHES MINIMUM AND 6.3800 INCHES MAXIMUM IN, style_designator: SEGMENTED, PLAIN, NO OUTSIDE FLANGES, features_provided: CASEHARDENED, body_outside_diameter: 8.1950 INCHES MINIMUM AND 8.1970 INCHES MAXIMUM IN, lubricant_accommodation_style: GROOVED CIRCULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-337-7068, 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
81127S41-20956ALT1PC7
NSN: 3120-00-337-7068
FSC: 3120
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
overall_length6.3700 INCHES MINIMUM AND 6.3800 INCHES MAXIMUM IN
style_designatorSEGMENTED, PLAIN, NO OUTSIDE FLANGES
features_providedCASEHARDENED
body_outside_diameter8.1950 INCHES MINIMUM AND 8.1970 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED CIRCULAR
surface_groove_location_and_quantity1 INTERNAL
NSN3120-00-337-7068
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 81127S41-20956ALT1PC7 · 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
•
FEATURES PROVIDED: CASEHARDENED
•
MATERIAL: OIL LUBRICATING LUBRICATION
•
STYLE DESIGNATOR: SEGMENTED, PLAIN, NO OUTSIDE FLANGES
•
SURFACE GROOVE LOCATION AND QUANTITY: 1 INTERNAL
•
LUBRICANT ACCOMMODATION STYLE: GROOVED CIRCULAR
•
BODY OUTSIDE DIAMETER: 8.1950 INCHES MINIMUM AND 8.1970 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDCASEHARDENED
MATERIALOIL LUBRICATING LUBRICATION
STYLE DESIGNATORSEGMENTED, PLAIN, NO OUTSIDE FLANGES
SURFACE GROOVE LOCATION AND QUANTITY1 INTERNAL
LUBRICANT ACCOMMODATION STYLEGROOVED CIRCULAR
OVERALL LENGTH6.3700 INCHES MINIMUM AND 6.3800 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER8.1950 INCHES MINIMUM AND 8.1970 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
MIL-W-16878/4Interchangeable
interchangeable cross-reference
interchangeable
439-4444-000Interchangeable
interchangeable cross-reference
interchangeable
HP3-EXBHB93Interchangeable
interchangeable cross-reference
interchangeable
HL11VAP-6-7Interchangeable
interchangeable cross-reference
interchangeable
1243603-4Interchangeable
interchangeable cross-reference
interchangeable
8720Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81127S41-20956ALT1PC7?
81127S41-20956ALT1PC7 is a BEARING,SLEEVE.
What parts can replace 81127S41-20956ALT1PC7?
There are 18 known substitutes for 81127S41-20956ALT1PC7: MIL-W-16878/4, 439-4444-000, HP3-EXBHB93 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81127S41-20956ALT1PC7?
81127S41-20956ALT1PC7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-337-7068. 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