PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 25543H
25543H ✓ 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,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, cup_width: 0.6875 INCHES NOMINAL IN, cone_width: 0.8540 INCHES NOMINAL IN, bore_diameter: 1.8125 INCHES NOMINAL IN, overall_width: 0.8125 INCHES NOMINAL IN, standout_width: 0.1250 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 3110-00-100-3872, 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
25543H
NSN: 3110-00-100-3872
FSC: 3110
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.6875 INCHES NOMINAL IN
cone_width0.8540 INCHES NOMINAL IN
bore_diameter1.8125 INCHES NOMINAL IN
overall_width0.8125 INCHES NOMINAL IN
standout_width0.1250 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0930 INCHES NOMINAL IN
backface_corner_radius0.0460 INCHES NOMINAL IN
overall_outside_diameter3.3464 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-3872
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 25543H · 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 WIDTH: 0.8540 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.1250 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 3.3464 INCHES NOMINAL IN
•
CUP WIDTH: 0.6875 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 1.8125 INCHES NOMINAL IN
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 WIDTH0.8540 INCHES NOMINAL IN
STANDOUT WIDTH0.1250 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER3.3464 INCHES NOMINAL IN
CUP WIDTH0.6875 INCHES NOMINAL IN
OVERALL WIDTH0.8125 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.8125 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
BACKFACE CORNER RADIUS0.0460 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
411338-99Interchangeable
interchangeable cross-reference
interchangeable
6970961-332Interchangeable
interchangeable cross-reference
interchangeable
RC42GF332JInterchangeable
interchangeable cross-reference
interchangeable
501-125Interchangeable
interchangeable cross-reference
interchangeable
5501-125Interchangeable
interchangeable cross-reference
interchangeable
88850765Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 25543H?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 25543H?
25543H is a BEARING,ROLLER,TAPERED.
What parts can replace 25543H?
There are 15 known substitutes for 25543H: 411338-99, 6970961-332, RC42GF332J and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25543H?
25543H is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3872. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 25543H

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026