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Technical Data Sheet
PartsTable / MRO / 21850
21850 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 IBM 2-line PCI WAN Modem is a the manufacturer industrial component. Key specifications include shape: STRAIGHT, height: 0.563 INCHES NOMINAL IN, diameter: 1.814 INCHES NOMINAL IN, material: STEEL LOCATION NOT OTHERWISE SPECIFIED, cup_width: 0.5625 INCHES NOMINAL IN, unit_type: NONREFILLABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4443, 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
MRO→ MRO_GENERAL→ 21850
NSN: 3110-00-100-4443
FSC: 3110
CAGE: 30076 — HYSTER-YALE GROUP, INC. (USA)
SPECIFICATIONS
shapeSTRAIGHT
height0.563 INCHES NOMINAL IN
diameter1.814 INCHES NOMINAL IN
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
cup_width0.5625 INCHES NOMINAL IN
unit_typeNONREFILLABLE
body_shapeROUND
body_styleROUND SHAPE
body_width0.671 INCHES NOMINAL IN
cone_width0.7940 INCHES NOMINAL IN
shell_typeSOLID
body_height0.740 INCHES NOMINAL IN
NSN3110-00-100-4443
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21850 · 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: 0.8750 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.2000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
CUP WIDTH: 0.5625 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.8750 INCHES NOMINAL IN
STANDOUT WIDTH0.2000 INCHES NOMINAL IN
OVERALL WIDTH0.7940 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
CUP WIDTH0.5625 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
CONE CORNER RADIUS0.0620 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER2.0625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
2-544-1Interchangeable
interchangeable cross-reference
interchangeable
AH052SInterchangeable
interchangeable cross-reference
interchangeable
21850Interchangeable
interchangeable cross-reference
interchangeable
0781-060-208Interchangeable
interchangeable cross-reference
interchangeable
M1195Interchangeable
interchangeable cross-reference
interchangeable
5350845Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21850?
21850 is a IBM 2-line PCI WAN Modem. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21850?
There are 21 known substitutes for 21850: 2-544-1, AH052S, 21850 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21850?
21850 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4443. 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