PartsTable
Technical Data Sheet
PartsTable / COMPONENT / CB1620-28
CB1620-28 ✓ 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 932 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN, hardness_rating: 63.0 ROCKWELL E NOMINAL OVERALL, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.9990 INCHES MINIMUM AND 1.0010 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 3120-00-386-3214, 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
CB1620-28
NSN: 3120-00-386-3214
FSC: 3120
CAGE: 71366 — BUNTING BEARINGS CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY 932 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
hardness_rating63.0 ROCKWELL E NOMINAL OVERALL
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.9990 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN
body_outside_diameter1.2520 INCHES MINIMUM AND 1.2530 INCHES MAXIMUM IN
material_document_and_classificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-386-3214
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: CB1620-28 · 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
•
MATERIAL: COPPER ALLOY 932 OVERALL
•
HARDNESS RATING: 63.0 ROCKWELL E NOMINAL OVERALL
•
CORNER SHAPE: SQUARE ALL CORNERS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.9990 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 1.2520 INCHES MINIMUM AND 1.2530 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY 932 OVERALL
HARDNESS RATING63.0 ROCKWELL E NOMINAL OVERALL
CORNER SHAPESQUARE ALL CORNERS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
BODY INSIDE DIAMETER0.9990 INCHES MINIMUM AND 1.0010 INCHES MAXIMUM IN
OVERALL LENGTH3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.2520 INCHES MINIMUM AND 1.2530 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
5940001152678Interchangeable
interchangeable cross-reference
interchangeable
10386718Interchangeable
interchangeable cross-reference
interchangeable
12-Z-7001-2507Interchangeable
interchangeable cross-reference
interchangeable
VR92Interchangeable
interchangeable cross-reference
interchangeable
VK87Interchangeable
interchangeable cross-reference
interchangeable
U83Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CB1620-28?
CB1620-28 is a BEARING,SLEEVE.
What parts can replace CB1620-28?
There are 13 known substitutes for CB1620-28: 5940001152678, 10386718, 12-Z-7001-2507 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CB1620-28?
CB1620-28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-386-3214. 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