PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 304770-3
304770-3 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL INNER RING, bore_shape: STRAIGHT, flange_width: 0.0470 INCHES NOMINAL IN, bore_diameter: 0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-157-1908, 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
304770-3
NSN: 3110-00-157-1908
FSC: 3110
CAGE: 36090 — LOCKHEED MARTIN LIBRASCOPE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
flange_width0.0470 INCHES NOMINAL IN
bore_diameter0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
inner_ring_width0.2480 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
outer_ring_taper0.6253 PER FOOT IN INCHES NOMINAL
outer_ring_width0.2290 INCHES NOMINAL IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
flange_outside_diameter0.6920 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
NSN3110-00-157-1908
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 304770-3 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BORE DIAMETER: 0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN
•
LOAD DIRECTION: RADIAL
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
BORE SHAPE: STRAIGHT
•
OUTER RING TAPER: 0.6253 PER FOOT IN INCHES NOMINAL
•
RETAINER FABRICATION METHOD: PRESSED
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOAD DIRECTIONRADIAL
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
OUTER RING TAPER0.6253 PER FOOT IN INCHES NOMINAL
RETAINER FABRICATION METHODPRESSED
OUTER RING TAPER0.6253 PER FOOT IN INCHES NOMINAL
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
A509517-3Interchangeable
interchangeable cross-reference
interchangeable
MSC115A/10HJ4Interchangeable
interchangeable cross-reference
interchangeable
1066620-1Interchangeable
interchangeable cross-reference
interchangeable
F4X1Interchangeable
interchangeable cross-reference
interchangeable
XA1341NSTInterchangeable
interchangeable cross-reference
interchangeable
BUWEPSDWGTP7194Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 304770-3?
304770-3 is a BEARING,BALL,ANNULAR.
What parts can replace 304770-3?
There are 27 known substitutes for 304770-3: A509517-3, MSC115A/10HJ4, 1066620-1 and 24 more. Substitute compatibility should be verified for your specific system.
Is 304770-3 still available?
304770-3 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