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B2-6445 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

B2-6445: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 958 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 4.0000 INCHES NOMINAL IN, surface_finish: 160.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 3.0090 INCHES MINIMUM AND 3.0110 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-273-5877, 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
B2-6445
NSN: 3120-00-273-5877
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 55102 — CONTINENTAL EMSCO CO SKAGIT PRODUCTS DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY 958 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length4.0000 INCHES NOMINAL IN
surface_finish160.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter3.0090 INCHES MINIMUM AND 3.0110 INCHES MAXIMUM IN
body_outside_diameter3.5030 INCHES MINIMUM AND 3.5040 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED FIGURE 8 W/RADIAL GROOVE EACH END W
NSN3120-00-273-5877
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: B2-6445 · 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
•
SURFACE FINISH: 250.0 MICROINCHES LEFT END SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 3.5030 INCHES MINIMUM AND 3.5040 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
TECHNICAL CHARACTERISTICS
SURFACE FINISH250.0 MICROINCHES LEFT END SURFACE OF BODY
SURFACE FINISH250.0 MICROINCHES RIGHT END SURFACE OF BODY
SURFACE FINISH160.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH160.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER3.5030 INCHES MINIMUM AND 3.5040 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH4.0000 INCHES NOMINAL IN
BODY INSIDE DIAMETER3.0090 INCHES MINIMUM AND 3.0110 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED FIGURE 8 W/RADIAL GROOVE EACH END W
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B2-6445?
B2-6445 is a BEARING,SLEEVE.
What is the NSN for B2-6445?
B2-6445 is cataloged in the U.S. Government catalog under NSN 3120-00-273-5877. This indicates validated use in U.S. government and defense supply chains.
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