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PartsTable / COMPONENT / HM40819
HM40819 ✓ 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,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include hole_diameter: 0.3750 INCHES NOMINAL FIRST IN, overall_length: 8.6250 INCHES NOMINAL IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 2.5625 INCHES NOMINAL IN, body_outside_diameter: 2.8790 INCHES NOMINAL IN, antirotation/lubrication_type_and_quantity: 2 HOLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-398-9333, 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
HM40819
NSN: 3120-00-398-9333
FSC: 3120
CAGE: 53660 — HOFFERT MARINE INC (USA)
SPECIFICATIONS
hole_diameter0.3750 INCHES NOMINAL FIRST IN
overall_length8.6250 INCHES NOMINAL IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter2.5625 INCHES NOMINAL IN
body_outside_diameter2.8790 INCHES NOMINAL IN
antirotation/lubrication_type_and_quantity2 HOLE
NSN3120-00-398-9333
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: HM40819 · 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
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 2 HOLE
•
BODY OUTSIDE DIAMETER: 2.8790 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.3750 INCHES NOMINAL FIRST IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 2.5625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ANTIROTATION/LUBRICATION TYPE AND QUANTITY2 HOLE
BODY OUTSIDE DIAMETER2.8790 INCHES NOMINAL IN
HOLE DIAMETER0.3750 INCHES NOMINAL FIRST IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH8.6250 INCHES NOMINAL IN
BODY INSIDE DIAMETER2.5625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
10958Interchangeable
interchangeable cross-reference
interchangeable
509881-10Interchangeable
interchangeable cross-reference
interchangeable
6186Interchangeable
interchangeable cross-reference
interchangeable
14105Interchangeable
interchangeable cross-reference
interchangeable
41B311200Interchangeable
interchangeable cross-reference
interchangeable
10424469Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HM40819?
HM40819 is a BEARING,BALL,AIRFRAME.
What parts can replace HM40819?
There are 21 known substitutes for HM40819: 10958, 509881-10, 6186 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HM40819?
HM40819 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-398-9333. 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