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Technical Data Sheet
PartsTable / COMPONENT / MD20346
MD20346 ✓ 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 HALF,SLEEVE is a the manufacturer industrial component. Key specifications include slot_width: 0.2500 INCHES NOMINAL FIRST IN, hole_diameter: 0.3125 INCHES NOMINAL FIRST IN, overall_length: 4.2995 INCHES NOMINAL IN, style_designator: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES, body_outside_diameter: 1.7500 INCHES NOMINAL IN, antirotation/lubrication_type_and_quantity: 2 HOLE AND 1 SLOT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-859-4125, 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
MD20346
NSN: 3120-00-859-4125
FSC: 3120
CAGE: 76558 — MWM-MURPHY DIESEL CO (USA)
SPECIFICATIONS
slot_width0.2500 INCHES NOMINAL FIRST IN
hole_diameter0.3125 INCHES NOMINAL FIRST IN
overall_length4.2995 INCHES NOMINAL IN
style_designatorHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
body_outside_diameter1.7500 INCHES NOMINAL IN
antirotation/lubrication_type_and_quantity2 HOLE AND 1 SLOT
NSN3120-00-859-4125
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MD20346 · 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
•
BODY OUTSIDE DIAMETER: 1.7500 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.3125 INCHES NOMINAL FIRST IN
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 2 HOLE AND 1 SLOT
•
STYLE DESIGNATOR: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
•
SLOT WIDTH: 0.2500 INCHES NOMINAL FIRST IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH4.2995 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.7500 INCHES NOMINAL IN
HOLE DIAMETER0.3125 INCHES NOMINAL FIRST IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY2 HOLE AND 1 SLOT
STYLE DESIGNATORHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
SLOT WIDTH0.2500 INCHES NOMINAL FIRST IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
187673PC306Interchangeable
interchangeable cross-reference
interchangeable
N325PC343Interchangeable
interchangeable cross-reference
interchangeable
107253PC85Interchangeable
interchangeable cross-reference
interchangeable
10-16666Interchangeable
interchangeable cross-reference
interchangeable
BB5211Interchangeable
interchangeable cross-reference
interchangeable
7038X1CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MD20346?
MD20346 is a BEARING HALF,SLEEVE.
What parts can replace MD20346?
There are 20 known substitutes for MD20346: 187673PC306, N325PC343, 107253PC85 and 17 more. Substitute compatibility should be verified for your specific system.
Is MD20346 still available?
MD20346 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026