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Technical Data Sheet
PartsTable / COMPONENT / 0B56
0B56 ✓ 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: COPPER ALLOY OVERALL, corner_shape: SQUARE INSIDE LEFT CORNER, flange_width: 0.0210 INCHES MINIMUM AND 0.0230 INCHES MAXIMUM IN, overall_length: 0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 0.2502 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-925-1117, 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
0B56
NSN: 3120-00-925-1117
FSC: 3120
CAGE: 23266 — SECS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE INSIDE LEFT CORNER
flange_width0.0210 INCHES MINIMUM AND 0.0230 INCHES MAXIMUM IN
overall_length0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter0.2502 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
body_outside_diameter0.3749 INCHES MINIMUM AND 0.3751 INCHES MAXIMUM IN
flange_outside_diameter0.4170 INCHES MINIMUM AND 0.4270 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 TYPE AND A COMPOSITION
NSN3120-00-925-1117
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 0B56 · 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 INSIDE DIAMETER: 0.2502 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE OUTSIDE LEFT CORNER
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.2502 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIALCOPPER ALLOY OVERALL
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A COMPOSITION
CORNER SHAPESQUARE INSIDE LEFT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
495AXInterchangeable
interchangeable cross-reference
interchangeable
38706Interchangeable
interchangeable cross-reference
interchangeable
7EQ1224Interchangeable
interchangeable cross-reference
interchangeable
1271-16Interchangeable
interchangeable cross-reference
interchangeable
MILB5687Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0B56?
0B56 is a BEARING,SLEEVE.
What parts can replace 0B56?
There are 5 known substitutes for 0B56: 495AX, 38706, 7EQ1224 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0B56?
0B56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-925-1117. 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