PartsTable
Technical Data Sheet
PartsTable / COMPONENT / RA-3/4
RA-3/4 ✓ 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 RA-3/4 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-00-465-8579, 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
RA-3/4
NSN: 3130-00-465-8579
FSC: 3130
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
Part NumberRA-3/4
NSN3130-00-465-8579
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: RA-3/4 · 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
•
LOAD CAPABILITY TYPE: RADIAL AND THRUST
•
HOUSING DIAMETER: 3.5625 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.1560 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLANGE BLOCK
•
MATERIAL: STEEL HOUSING
•
ROTATING ELEMENT LOCKING METHOD: SETSCREW LOCKING COLLAR
•
COLLAR LOCATION: ONE END
•
ASSEMBLY OVERALL LENGTH: 1.2500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LOAD CAPABILITY TYPERADIAL AND THRUST
HOUSING DIAMETER3.5625 INCHES NOMINAL IN
FLANGE THICKNESS0.1560 INCHES NOMINAL IN
STYLE DESIGNATORFLANGE BLOCK
MATERIALSTEEL HOUSING
ROTATING ELEMENT LOCKING METHODSETSCREW LOCKING COLLAR
COLLAR LOCATIONONE END
ASSEMBLY OVERALL LENGTH1.2500 INCHES NOMINAL IN
FEATURES PROVIDEDGROUND ROLLING ELEMENT GROOVE
MOUNTING HOLE WIDTH0.3438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
RA56Interchangeable
interchangeable cross-reference
interchangeable
1538556Interchangeable
interchangeable cross-reference
interchangeable
133-23-92-040Interchangeable
interchangeable cross-reference
interchangeable
RA3.4Interchangeable
interchangeable cross-reference
interchangeable
3LPSGInterchangeable
interchangeable cross-reference
interchangeable
RA3-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RA-3/4?
RA-3/4 is a RA-3/4.
What parts can replace RA-3/4?
There are 12 known substitutes for RA-3/4: RA56, 1538556, 133-23-92-040 and 9 more. Substitute compatibility should be verified for your specific system.
Is RA-3/4 still available?
RA-3/4 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