PartsTable
Technical Data Sheet
Download PDF

B59 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

B59: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, corner_shape: SQUARE ALL CORNERS, bore_diameter: 0.3750 INCHES NOMINAL IN, overall_width: 0.3750 INCHES NOMINAL IN, alignment_type: RIGID, overall_length: 0.0610 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-112-5879, 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
B59
NSN: 3110-00-112-5879
NIINs: 001125879, 001203080, 001977913, 010902072, 012909579, 014481825
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 00724 — RAYTHEON COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
corner_shapeSQUARE ALL CORNERS
bore_diameter0.3750 INCHES NOMINAL IN
overall_width0.3750 INCHES NOMINAL IN
alignment_typeRIGID
overall_length0.0610 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
surface_finishGROUND
performance_typeHIGH CAPACITYHIGH CAPACITY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.1250 INCHES MINIMUM AND 0.1300 INCHES MAXIMUM IN
cross-sectional_sizeBB
lubrication_materialGREASE
NSN3110-00-112-5879
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B59 · 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
•
STYLE DESIGNATOR: NON-SEPARABLE, OPEN END, DRAWN SHELL
•
OVERALL OUTSIDE DIAMETER: 0.5625 INCHES NOMINAL IN
•
ALIGNMENT TYPE: RIGID
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
•
BORE DIAMETER: 0.3750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNON-SEPARABLE, OPEN END, DRAWN SHELL
OVERALL WIDTH0.3750 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER0.5625 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
BORE DIAMETER0.3750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
Y-1028-1-44Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
Ready to buy B59?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is B59?
B59 is a BEARING,ROLLER,NEEDLE.
What parts can replace B59?
There is 1 known substitute for B59: Y-1028-1-44. Substitute compatibility should be verified for your specific system.
What is the NSN for B59?
B59 is cataloged in the U.S. Government catalog under NSN 3110-00-112-5879. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — B59

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.