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A18774 ✓ 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 UNIT,BALL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, stock_diameter: 0.041 INCHES NOMINAL IN, inside_diameter: 0.278 INCHES NOMINAL IN, style_designator: CYLINDRICAL, spring_free_length: 0.500 INCHES NOMINAL IN, coil_helix_direction: EITHER DIRECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-297-8220, 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
A18774
NSN: 3130-01-297-8220
FSC: 3130
CAGE: 11914 — CHICAGO DRYER CO (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
stock_diameter0.041 INCHES NOMINAL IN
inside_diameter0.278 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length0.500 INCHES NOMINAL IN
coil_helix_directionEITHER DIRECTION
spring_deflection_rate34.0 POUNDS PER INCH NOMINAL LBS
spring_free_outside_diameter0.360 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyCOMPRESSION SPRING
NSN3130-01-297-8220
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A18774 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
4054Interchangeable
interchangeable cross-reference
interchangeable
1074Interchangeable
interchangeable cross-reference
interchangeable
2266LITEM47Interchangeable
interchangeable cross-reference
interchangeable
10-33B43CZ,135/BB,142Interchangeable
interchangeable cross-reference
interchangeable
A-A-30177Interchangeable
interchangeable cross-reference
interchangeable
4054AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A18774?
A18774 is a BEARING UNIT,BALL.
What parts can replace A18774?
There are 9 known substitutes for A18774: 4054, 1074, 2266LITEM47 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A18774?
A18774 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-297-8220. 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