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Technical Data Sheet
PartsTable / COMPONENT / 40766-2 PC NO. 28
40766-2 PC NO. 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 40766-2 PC NO. 28 is a the manufacturer industrial component. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-546-3721, 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
40766-2 PC NO. 28
NSN: 3120-01-546-3721
FSC: 3120
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
Part Number40766-2 PC NO. 28
NSN3120-01-546-3721
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 40766-2 PC NO. 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
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYBUSHING,SLEEVE
END ITEM IDENTIFICATIONVALVE, PRESSURE REGULATING
SPECIAL FEATURESMATERIAL MONEL, MATERIAL SPEC QQ-N-281
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
5305000068411Interchangeable
interchangeable cross-reference
interchangeable
209700Interchangeable
interchangeable cross-reference
interchangeable
62F 1/2Interchangeable
interchangeable cross-reference
interchangeable
2097000Interchangeable
interchangeable cross-reference
interchangeable
KIMWIPESInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40766-2 PC NO. 28?
40766-2 PC NO. 28 is a 40766-2 PC NO. 28.
What parts can replace 40766-2 PC NO. 28?
There are 5 known substitutes for 40766-2 PC NO. 28: 5305000068411, 209700, 62F 1/2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40766-2 PC NO. 28?
40766-2 PC NO. 28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-546-3721. 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