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PartsTable / COMPONENT / A21122
A21122 ✓ 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: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE ALL CORNERS, overall_length: 1.9925 INCHES MINIMUM AND 2.0075 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 1.7525 INCHES MINIMUM AND 1.7540 INCHES MAXIMUM IN, body_outside_diameter: 2.1270 INCHES MINIMUM AND 2.1280 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 3120-00-056-4845, 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
A21122
NSN: 3120-00-056-4845
FSC: 3120
CAGE: 70417 — CHRYSLER CORP AMPLEX DIV (USA)
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
corner_shapeSQUARE ALL CORNERS
overall_length1.9925 INCHES MINIMUM AND 2.0075 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter1.7525 INCHES MINIMUM AND 1.7540 INCHES MAXIMUM IN
body_outside_diameter2.1270 INCHES MINIMUM AND 2.1280 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-056-4845
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A21122 · 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: 1.7525 INCHES MINIMUM AND 1.7540 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY OUTSIDE DIAMETER: 2.1270 INCHES MINIMUM AND 2.1280 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER1.7525 INCHES MINIMUM AND 1.7540 INCHES MAXIMUM IN
CORNER SHAPESQUARE ALL CORNERS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
OVERALL LENGTH1.9925 INCHES MINIMUM AND 2.0075 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALOIL LUBRICATING LUBRICATION
BODY OUTSIDE DIAMETER2.1270 INCHES MINIMUM AND 2.1280 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
A21122Interchangeable
interchangeable cross-reference
interchangeable
21122Interchangeable
interchangeable cross-reference
interchangeable
AA2112-2Interchangeable
Same NIIN cross-reference
interchangeable
8441648Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A21122?
A21122 is a BEARING,SLEEVE.
What parts can replace A21122?
There are 4 known substitutes for A21122: A21122, 21122, AA2112-2 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A21122?
A21122 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-056-4845. 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