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Technical Data Sheet
PartsTable / COMPONENT / MILB17931BNT
MILB17931BNT ✓ 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 COMP E52100 OUTER RING, bore_shape: STRAIGHT, bore_diameter: 0.6691 INCHES MINIMUM AND 0.6693 INCHES MAXIMUM IN, overall_width: 0.8105 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-991-0915, 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
MILB17931BNT
NSN: 3110-00-991-0915
FSC: 3110
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OUTER RING
bore_shapeSTRAIGHT
bore_diameter0.6691 INCHES MINIMUM AND 0.6693 INCHES MAXIMUM IN
overall_width0.8105 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
special_featuresWITHOUT GREASE PLUG
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
bearing_seal_typeLIPS TURNED OUTWARDLY
internal_clearance0.0004 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
lubrication_materialGREASE
NSN3110-00-991-0915
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MILB17931BNT · 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: 1.7715 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
•
INTERNAL CLEARANCE: 0.0005 INCHES MINIMUM RADIAL AND 0.0009 INCHES MAXIMUM RADIAL IN
•
RETAINER FABRICATION METHOD: PRESSED
•
BORE SHAPE: STRAIGHT
•
LUBRICATION MATERIAL: GREASE
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
INTERNAL FIT-UP DESIGNATION: TIGHT
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER1.7715 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
INTERNAL CLEARANCE0.0005 INCHES MINIMUM RADIAL AND 0.0009 INCHES MAXIMUM RADIAL IN
RETAINER FABRICATION METHODPRESSED
BORE SHAPESTRAIGHT
LUBRICATION MATERIALGREASE
CRITICALITY CODE JUSTIFICATIONZZZW
INTERNAL FIT-UP DESIGNATIONTIGHT
SURFACE FINISHGROUND
LOAD DIRECTIONRADIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 36
MILB17931BInterchangeable
interchangeable cross-reference
interchangeable
10264PC10Interchangeable
interchangeable cross-reference
interchangeable
1515668PC4Interchangeable
interchangeable cross-reference
interchangeable
6208-7077V4Interchangeable
interchangeable cross-reference
interchangeable
208TMT58VBInterchangeable
interchangeable cross-reference
interchangeable
6208W1BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILB17931BNT?
MILB17931BNT is a BEARING,BALL,ANNULAR.
What parts can replace MILB17931BNT?
There are 36 known substitutes for MILB17931BNT: MILB17931B, 10264PC10, 1515668PC4 and 33 more. Substitute compatibility should be verified for your specific system.
Is MILB17931BNT still available?
MILB17931BNT is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026