PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 181-44
181-44 ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include height: 0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN, diameter: 0.170 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN, material: STEEL COMP 630 OVERALL, base_style: DOUBLE CONTACT BAYONET CANDELABRA, bulb_style: T (TUBULAR), cone_width: 1.4240 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0285, 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
181-44
NSN: 3110-00-100-0285
FSC: 3110
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
height0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
diameter0.170 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
materialSTEEL COMP 630 OVERALL
base_styleDOUBLE CONTACT BAYONET CANDELABRA
bulb_styleT (TUBULAR)
cone_width1.4240 INCHES NOMINAL IN
head_styleFLAT CHAMFER
bore_diameter2.7500 INCHES NOMINAL IN
chamfer_length0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
overall_length5.562 INCHES MAXIMUM IN
voltage_rating120.000 VOLTS NOMINAL
wattage_rating20.000 WATTS
NSN3110-00-100-0285
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 181-44 · 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
•
CONE CORNER RADIUS: 0.1410 INCHES NOMINAL IN
•
BORE DIAMETER: 2.7500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE WIDTH: 1.4240 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
CONE CORNER RADIUS0.1410 INCHES NOMINAL IN
BORE DIAMETER2.7500 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
CONE WIDTH1.4240 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
566Interchangeable
interchangeable cross-reference
interchangeable
2047365Interchangeable
interchangeable cross-reference
interchangeable
30159Interchangeable
interchangeable cross-reference
interchangeable
1196S4302-2PC12Interchangeable
interchangeable cross-reference
interchangeable
1-8144Interchangeable
interchangeable cross-reference
interchangeable
108Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 181-44?
181-44 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 181-44?
There are 18 known substitutes for 181-44: 566, 2047365, 30159 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 181-44?
181-44 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0285. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026