PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 812388
812388 ✓ 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,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 0.1875 INCHES NOMINAL IN, overall_width: 0.2500 INCHES NOMINAL IN, alignment_type: RIGID, style_designator: NON-SEPARABLE, OPEN END, DRAWN SHELL, overall_outside_diameter: 0.3438 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-3074, 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
812388
NSN: 3110-00-120-3074
FSC: 3110
CAGE: 06141 — L3 AVIATION PRODUCTS, INC. DBA L3 TECHNOLOGIES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter0.1875 INCHES NOMINAL IN
overall_width0.2500 INCHES NOMINAL IN
alignment_typeRIGID
style_designatorNON-SEPARABLE, OPEN END, DRAWN SHELL
overall_outside_diameter0.3438 INCHES NOMINAL IN
standard_tolerance_designationAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
NSN3110-00-120-3074
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 812388 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
•
BORE DIAMETER: 0.1875 INCHES NOMINAL IN
•
ALIGNMENT TYPE: RIGID
•
STYLE DESIGNATOR: NON-SEPARABLE, OPEN END, DRAWN SHELL
•
MATERIAL: STEEL OVERALL
•
OVERALL OUTSIDE DIAMETER: 0.3438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
BORE DIAMETER0.1875 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
OVERALL WIDTH0.2500 INCHES NOMINAL IN
STYLE DESIGNATORNON-SEPARABLE, OPEN END, DRAWN SHELL
MATERIALSTEEL OVERALL
OVERALL OUTSIDE DIAMETER0.3438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
B3-4Interchangeable
interchangeable cross-reference
interchangeable
B34GInterchangeable
interchangeable cross-reference
interchangeable
10015524Interchangeable
interchangeable cross-reference
interchangeable
10015524-013Interchangeable
interchangeable cross-reference
interchangeable
50412Interchangeable
interchangeable cross-reference
interchangeable
12Z330PC30Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 812388?
812388 is a BEARING,ROLLER,NEEDLE.
What parts can replace 812388?
There are 21 known substitutes for 812388: B3-4, B34G, 10015524 and 18 more. Substitute compatibility should be verified for your specific system.
Is 812388 still available?
812388 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