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Technical Data Sheet
PartsTable / COMPONENT / 21859
21859 ✓ 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 BEARING,ROLLER,CYLINDRICAL is a Freecom industrial component. Key specifications include material: STEEL COMP 1050 OVERALL, hole_diameter: 0.116 INCHES MINIMUM AND 0.116 INCHES MINIMUM AND 0.123 INCHES MAXIMUM0.123 INCHES MAXIMUM IN, overall_height: 0.042 INCHES MINIMUM AND 0.042 INCHES MINIMUM AND 0.052 INCHES MAXIMUM0.052 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM44.0 ROCKWELL C MAXIMUM, outside_diameter: 0.265 INCHES MINIMUM AND 0.265 INCHES MINIMUM AND 0.275 INCHES MAXIMUM0.275 INCHES MAXIMUM IN, style_designator: SPRING TENSION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-1920, 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
21859
NSN: 3110-00-198-1920
FSC: 3110
CAGE: 61038 — VICKERS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OVERALL
hole_diameter0.116 INCHES MINIMUM AND 0.116 INCHES MINIMUM AND 0.123 INCHES MAXIMUM0.123 INCHES MAXIMUM IN
overall_height0.042 INCHES MINIMUM AND 0.042 INCHES MINIMUM AND 0.052 INCHES MAXIMUM0.052 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM44.0 ROCKWELL C MAXIMUM
outside_diameter0.265 INCHES MINIMUM AND 0.265 INCHES MINIMUM AND 0.275 INCHES MAXIMUM0.275 INCHES MAXIMUM IN
style_designatorSPRING TENSION
surface_treatmentPHOSPHATE OVERALL
material_thickness0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-00-198-1920
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21859 · 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
•
OVERALL OUTSIDE DIAMETER: 160.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OUTER RING
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, CYLINDRICAL OUTER RING WITH TWO ROLLER RETAINMENT RINGS ON OUTER, SEPARABLE
•
SURFACE FINISH: GROUND
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH2.6875 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER160.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OUTER RING
MATERIALSTEEL ROLLER
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, CYLINDRICAL OUTER RING WITH TWO ROLLER RETAINMENT RINGS ON OUTER, SEPARABLE
MATERIALSTEEL INNER RING
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
INTERNAL FIT-UP DESIGNATIONSTANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
866112Interchangeable
interchangeable cross-reference
interchangeable
5A6709Interchangeable
interchangeable cross-reference
interchangeable
21859Interchangeable
interchangeable cross-reference
interchangeable
1654-008-15/32Interchangeable
interchangeable cross-reference
interchangeable
612-15/32Interchangeable
interchangeable cross-reference
interchangeable
61230Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21859?
21859 is a BEARING,ROLLER,CYLINDRICAL manufactured by Freecom.
What parts can replace 21859?
There are 12 known substitutes for 21859: 866112, 5A6709, 21859 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21859?
21859 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-1920. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026