PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 255277-3
255277-3 ✓ 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 934 OVERALL, corner_shape: SQUARE INSIDE LEFT CORNER, flange_width: 0.3750 INCHES NOMINAL IN, hole_diameter: 0.2500 INCHES NOMINAL FIRST IN, overall_length: 3.0000 INCHES NOMINAL IN, special_features: 4 HOLES 0.4380 IN DIA. ON2.7500 IN DIA.

BOLT CIRCLE DRILLED THRU FLANGE 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 3120-00-218-3482, 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
255277-3
NSN: 3120-00-218-3482
FSC: 3120
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialCOPPER ALLOY 934 OVERALL
corner_shapeSQUARE INSIDE LEFT CORNER
flange_width0.3750 INCHES NOMINAL IN
hole_diameter0.2500 INCHES NOMINAL FIRST IN
overall_length3.0000 INCHES NOMINAL IN
special_features4 HOLES 0.4380 IN DIA. ON2.7500 IN DIA. BOLT CIRCLE DRILLED THRU FLANGE IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter1.2500 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN
body_outside_diameter1.8740 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM IN
flange_outside_diameter3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED OPEN ONE END
material_document_and_classificationMIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-218-3482
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 255277-3 · 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
•
CORNER SHAPE: SQUARE OUTSIDE RIGHT CORNER
•
FLANGE OUTSIDE DIAMETER: 3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.2500 INCHES NOMINAL FIRST IN
•
BODY INSIDE DIAMETER: 1.2500 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 934 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
OVERALL LENGTH3.0000 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
HOLE DIAMETER0.2500 INCHES NOMINAL FIRST IN
BODY INSIDE DIAMETER1.2500 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
MATERIALCOPPER ALLOY 934 OVERALL
CORNER SHAPESQUARE INSIDE RIGHT CORNER
BODY OUTSIDE DIAMETER1.8740 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM IN
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
5680E6012Interchangeable
interchangeable cross-reference
interchangeable
T12041SInterchangeable
interchangeable cross-reference
interchangeable
GBW45Interchangeable
interchangeable cross-reference
interchangeable
780PInterchangeable
interchangeable cross-reference
interchangeable
408-44Interchangeable
interchangeable cross-reference
interchangeable
54422Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 255277-3?
255277-3 is a BEARING,SLEEVE.
What parts can replace 255277-3?
There are 9 known substitutes for 255277-3: 5680E6012, T12041S, GBW45 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 255277-3?
255277-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-218-3482. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026