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Technical Data Sheet
PartsTable / COMPONENT / K4905
K4905 ✓ 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 CUP, cup_width: 1.0625 INCHES NOMINAL IN, cone_width: 1.4200 INCHES NOMINAL IN, bore_diameter: 1.8750 INCHES NOMINAL IN, overall_width: 1.3750 INCHES NOMINAL IN, standout_width: 0.3125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4185, 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
K4905
NSN: 3110-00-100-4185
FSC: 3110
CAGE: 66821 — YALE SECURITY INC. DBA NORTON DOOR CONTROL (USA)
SPECIFICATIONS
materialSTEEL CUP
cup_width1.0625 INCHES NOMINAL IN
cone_width1.4200 INCHES NOMINAL IN
bore_diameter1.8750 INCHES NOMINAL IN
overall_width1.3750 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.1300 INCHES NOMINAL IN
overall_outside_diameter4.0000 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 4
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE CONE
NSN3110-00-100-4185
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: K4905 · 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
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
CUP WIDTH: 1.0625 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 4
•
OVERALL OUTSIDE DIAMETER: 4.0000 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1300 INCHES NOMINAL IN
•
MATERIAL: STEEL RETAINER
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)
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
CUP WIDTH1.0625 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 4
OVERALL OUTSIDE DIAMETER4.0000 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1300 INCHES NOMINAL IN
MATERIALSTEEL RETAINER
MATERIALSTEEL CONE
OVERALL WIDTH1.3750 INCHES NOMINAL IN
BORE DIAMETER1.8750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
52852Interchangeable
interchangeable cross-reference
interchangeable
GB1101Interchangeable
interchangeable cross-reference
interchangeable
359MR007P001Interchangeable
interchangeable cross-reference
interchangeable
412034Interchangeable
interchangeable cross-reference
interchangeable
SMB157383Interchangeable
interchangeable cross-reference
interchangeable
21012Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K4905?
K4905 is a BEARING,ROLLER,TAPERED.
What parts can replace K4905?
There are 17 known substitutes for K4905: 52852, GB1101, 359MR007P001 and 14 more. Substitute compatibility should be verified for your specific system.
Is K4905 still available?
K4905 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