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Technical Data Sheet
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HM-40758 — Technical Data Sheet

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— · 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: COPPER ALLOY OVERALL, corner_shape: ROUND INSIDE RIGHT CORNER, flange_width: 1.2500 INCHES NOMINAL IN, overall_length: 3.3750 INCHES NOMINAL IN, body_inside_diameter: 2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN, body_outside_diameter: 3.4960 INCHES MINIMUM AND 3.4980 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3120-00-218-3407, 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
HM-40758
NSN: 3120-00-218-3407
FSC: 3120
CAGE: 53660 — HOFFERT MARINE INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeROUND INSIDE RIGHT CORNER
flange_width1.2500 INCHES NOMINAL IN
overall_length3.3750 INCHES NOMINAL IN
body_inside_diameter2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN
body_outside_diameter3.4960 INCHES MINIMUM AND 3.4980 INCHES MAXIMUM IN
flange_outside_diameter4.1250 INCHES NOMINAL IN
lubricant_accommodation_styleGROOVED OPEN BOTH ENDS
surface_groove_location_and_quantity3 INTERNAL
NSN3120-00-218-3407
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: HM-40758 · 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
•
FLANGE WIDTH: 1.2500 INCHES NOMINAL IN
•
FLANGE OUTSIDE DIAMETER: 4.1250 INCHES NOMINAL IN
•
LUBRICANT ACCOMMODATION STYLE: GROOVED OPEN BOTH ENDS
•
BODY OUTSIDE DIAMETER: 3.4960 INCHES MINIMUM AND 3.4980 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
•
CORNER SHAPE: CHAMFERED OUTSIDE LEFT CORNER
TECHNICAL CHARACTERISTICS
FLANGE WIDTH1.2500 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER4.1250 INCHES NOMINAL IN
LUBRICANT ACCOMMODATION STYLEGROOVED OPEN BOTH ENDS
BODY OUTSIDE DIAMETER3.4960 INCHES MINIMUM AND 3.4980 INCHES MAXIMUM IN
BODY INSIDE DIAMETER2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN
OVERALL LENGTH3.3750 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
CORNER SHAPECHAMFERED OUTSIDE LEFT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
4-314-PInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PSX312-5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
0111007 M07InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
EDP-0111-007InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40758InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40 651InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HM-40758?
HM-40758 is a BEARING,SLEEVE.
What parts can replace HM-40758?
There are 12 known substitutes for HM-40758: 4-314-P, PSX312-5, 0111007 M07 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HM-40758?
HM-40758 is cataloged in the Federal Logistics Information System under NSN 3120-00-218-3407. 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: September 2026