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Technical Data Sheet
PartsTable / COMPONENT / 1056SB
1056SB ✓ 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 material: STEEL COMP 1010 OUTER LAYER, corner_shape: SQUARE ALL CORNERS, hole_diameter: 0.3125 INCHES NOMINAL FIRST IN, overall_length: 1.5950 INCHES MINIMUM AND 1.6050 INCHES MAXIMUM IN, style_designator: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES, locking_lug_width: 0.2900 INCHES MINIMUM AND 0.2950 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-354-1081, 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
1056SB
NSN: 3120-00-354-1081
FSC: 3120
CAGE: 73160 — FEDERAL-MOGUL CORP POWERTRAIN PRODUCTS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OUTER LAYER
corner_shapeSQUARE ALL CORNERS
hole_diameter0.3125 INCHES NOMINAL FIRST IN
overall_length1.5950 INCHES MINIMUM AND 1.6050 INCHES MAXIMUM IN
style_designatorHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
locking_lug_width0.2900 INCHES MINIMUM AND 0.2950 INCHES MAXIMUM IN
surface_treatmentTIN INNER LAYER
locking_lug_height0.0400 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN
locking_lug_length0.1875 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM IN
body_inside_diameter2.2505 INCHES MINIMUM AND 2.2510 INCHES MAXIMUM IN
body_outside_diameter2.4210 INCHES NOMINAL IN
lubricant_accommodation_styleGROOVED CIRCULAR
NSN3120-00-354-1081
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1056SB · 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
•
DISTANCE FROM LUG END TO END OF BEARING: 0.1450 INCHES MINIMUM AND 0.1475 INCHES MAXIMUM IN
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 1 HOLE
•
CORNER SHAPE: SQUARE ALL CORNERS
•
LOCKING LUG LENGTH: 0.1875 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM IN
•
LUBRICANT ACCOMMODATION STYLE: GROOVED CIRCULAR
•
SURFACE GROOVE LOCATION AND QUANTITY: 1 INTERNAL
•
DISTANCE FROM CENTERLINE OF OPENING TO LEFT END OF BEARING: 0.7950 INCHES MINIMUM AND 0.8050 INCHES MAXIMUM FIRST IN
•
LOCKING LUG WIDTH: 0.2900 INCHES MINIMUM AND 0.2950 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM LUG END TO END OF BEARING0.1450 INCHES MINIMUM AND 0.1475 INCHES MAXIMUM IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 HOLE
CORNER SHAPESQUARE ALL CORNERS
LOCKING LUG LENGTH0.1875 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED CIRCULAR
SURFACE GROOVE LOCATION AND QUANTITY1 INTERNAL
DISTANCE FROM CENTERLINE OF OPENING TO LEFT END OF BEARING0.7950 INCHES MINIMUM AND 0.8050 INCHES MAXIMUM FIRST IN
LOCKING LUG WIDTH0.2900 INCHES MINIMUM AND 0.2950 INCHES MAXIMUM IN
MATERIALTIN ALLOY UNS L13890 INNER LAYER
SURFACE TREATMENTTIN INNER LAYER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
441-1030-020Interchangeable
interchangeable cross-reference
interchangeable
30-020Interchangeable
interchangeable cross-reference
interchangeable
HATN20AInterchangeable
interchangeable cross-reference
interchangeable
53649Interchangeable
interchangeable cross-reference
interchangeable
TA15M04HR1Interchangeable
interchangeable cross-reference
interchangeable
30-020-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1056SB?
1056SB is a BEARING HALF,SLEEVE.
What parts can replace 1056SB?
There are 13 known substitutes for 1056SB: 441-1030-020, 30-020, HATN20A and 10 more. Substitute compatibility should be verified for your specific system.
Is 1056SB still available?
1056SB 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