PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 21866
21866 ✓ Verified by PartsTable
Freecom · 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 time has come to travel and save your data and watch movies without using an AC Adapter. The Freecom Traveller II+ DVD+/-RW can be powered via the PC Card Cable. This means that the AC Adapter is not needed.

Additionally you can power the Traveller II+ via the integrated rechargeable battery and work for up to 3 hours. This battery can be charged via the Universal AC Adapter and via the Notebooks PC Card slot. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-5104, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
21866
NSN: 3110-00-156-5104
FSC: 3110
CAGE: 61038 — VICKERS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thickness0.0938 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN
body_width2.500 INCHES NOMINAL IN
bore_shapeSTRAIGHT
key_height0.188 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN
body_height3.219 INCHES NOMINAL IN
body_length2.625 INCHES NOMINAL IN
bore_diameter55.00 MILLIMETERS NOMINAL MM
contact_angle25.0 DEGREES MAXIMUM
overall_width43.0 MILLIMETERS NOMINAL MM
alignment_typeSELF-ALIGNING
inclosure_typeHERMETICALLY SEALED
NSN3110-00-156-5104
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21866 · Freecom ⚠ 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: 55.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: INWARD CONVERGENT
•
CONTACT ANGLE: 25.0 DEGREES MAXIMUM
•
LOAD DIRECTION: ANGULAR
•
SELF-ALIGNMENT LOCATION: INTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER55.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
CONTACT ANGLE25.0 DEGREES MAXIMUM
LOAD DIRECTIONANGULAR
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
SELF-ALIGNMENT LOCATIONINTERNAL
BORE SHAPESTRAIGHT
ALIGNMENT TYPESELF-ALIGNING
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
21866Interchangeable
interchangeable cross-reference
interchangeable
HD42Interchangeable
interchangeable cross-reference
interchangeable
398-001-9002Interchangeable
interchangeable cross-reference
interchangeable
60040P1Interchangeable
interchangeable cross-reference
interchangeable
M1216Interchangeable
interchangeable cross-reference
interchangeable
535039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21866?
21866 is a TRANSFORMER,AUDIO FREQUENCY manufactured by Freecom.
What parts can replace 21866?
There are 18 known substitutes for 21866: 21866, HD42, 398-001-9002 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21866?
21866 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-5104. 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