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Technical Data Sheet
PartsTable / COMPONENT / 312548
312548 ✓ 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 CUP,TAPERED ROLLER BEARING 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: 0.6563 INCHES NOMINAL IN, cone_width: 0.8125 INCHES NOMINAL IN, bore_diameter: 3.5000 INCHES NOMINAL IN, overall_width: 0.8125 INCHES NOMINAL IN, alignment_type: RIGID. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0633, 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
312548
NSN: 3110-00-100-0633
FSC: 3110
CAGE: 00501 — NEW HOLLAND N.V.NC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.6563 INCHES NOMINAL IN
cone_width0.8125 INCHES NOMINAL IN
bore_diameter3.5000 INCHES NOMINAL IN
overall_width0.8125 INCHES NOMINAL IN
alignment_typeRIGID
standout_width0.1563 INCHES NOMINAL IN
outside_diameter4.7500 INCHES NOMINAL IN
special_featuresDUTY CL HM SERIES
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0620 INCHES NOMINAL IN
lubrication_materialGREASE
NSN3110-00-100-0633
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 312548 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
30240Interchangeable
interchangeable cross-reference
interchangeable
LD170881Interchangeable
interchangeable cross-reference
interchangeable
713298Interchangeable
interchangeable cross-reference
interchangeable
150-590PC240Interchangeable
interchangeable cross-reference
interchangeable
BB55S49080PC240Interchangeable
interchangeable cross-reference
interchangeable
150-570HPC240Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 312548?
312548 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 312548?
There are 26 known substitutes for 312548: 30240, LD170881, 713298 and 23 more. Substitute compatibility should be verified for your specific system.
Is 312548 still available?
312548 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026