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PartsTable / COMPONENT / 25Z259D35
25Z259D35 ✓ 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: 1.3750 INCHES NOMINAL IN, cone_width: 1.9375 INCHES NOMINAL IN, bore_diameter: 4.2500 INCHES NOMINAL IN, overall_width: 1.8750 INCHES NOMINAL IN, standout_width: 0.5000 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 3110-00-100-5498, 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
25Z259D35
NSN: 3110-00-100-5498
FSC: 3110
CAGE: 27315 — MORRIS MATERIAL HANDLING, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.3750 INCHES NOMINAL IN
cone_width1.9375 INCHES NOMINAL IN
bore_diameter4.2500 INCHES NOMINAL IN
overall_width1.8750 INCHES NOMINAL IN
standout_width0.5000 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter7.5000 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-5498
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 25Z259D35 · 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
•
CUP WIDTH: 1.3750 INCHES NOMINAL IN
•
BORE DIAMETER: 4.2500 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
OVERALL OUTSIDE DIAMETER: 7.5000 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 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)
CUP WIDTH1.3750 INCHES NOMINAL IN
OVERALL WIDTH1.8750 INCHES NOMINAL IN
BORE DIAMETER4.2500 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
OVERALL OUTSIDE DIAMETER7.5000 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.5000 INCHES NOMINAL IN
CONE WIDTH1.9375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
1543Interchangeable
interchangeable cross-reference
interchangeable
3196Interchangeable
interchangeable cross-reference
interchangeable
907-251Interchangeable
interchangeable cross-reference
interchangeable
14-78070Interchangeable
interchangeable cross-reference
interchangeable
95140Interchangeable
interchangeable cross-reference
interchangeable
1543BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25Z259D35?
25Z259D35 is a BEARING,ROLLER,TAPERED.
What parts can replace 25Z259D35?
There are 24 known substitutes for 25Z259D35: 1543, 3196, 907-251 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25Z259D35?
25Z259D35 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5498. 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