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Technical Data Sheet
PartsTable / COMPONENT / K742
K742 ✓ 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: 1.4375 INCHES NOMINAL IN, cone_width: 1.8375 INCHES NOMINAL IN, bore_diameter: 3.2500 INCHES NOMINAL IN, overall_width: 1.7500 INCHES NOMINAL IN, standout_width: 0.3125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-757-2392, 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
K742
NSN: 3110-00-757-2392
FSC: 3110
CAGE: F0272 — SKF FRANCE (FRA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.4375 INCHES NOMINAL IN
cone_width1.8375 INCHES NOMINAL IN
bore_diameter3.2500 INCHES NOMINAL IN
overall_width1.7500 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter5.9090 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA CLASS 0
NSN3110-00-757-2392
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: K742 · 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: 1.8375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 0
•
OVERALL OUTSIDE DIAMETER: 5.9090 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
CUP WIDTH: 1.4375 INCHES NOMINAL IN
•
RETAINER FABRICATION METHOD: PRESSED
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 WIDTH1.8375 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 0
OVERALL OUTSIDE DIAMETER5.9090 INCHES NOMINAL IN
OVERALL WIDTH1.7500 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
CUP WIDTH1.4375 INCHES NOMINAL IN
RETAINER FABRICATION METHODPRESSED
STANDOUT WIDTH0.3125 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
GS570DG1Interchangeable
interchangeable cross-reference
interchangeable
742Interchangeable
interchangeable cross-reference
interchangeable
51G1300Interchangeable
interchangeable cross-reference
interchangeable
MMI-9998Interchangeable
interchangeable cross-reference
interchangeable
GS2386Interchangeable
interchangeable cross-reference
interchangeable
BRTG2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K742?
K742 is a BEARING,ROLLER,TAPERED.
What parts can replace K742?
There are 23 known substitutes for K742: GS570DG1, 742, 51G1300 and 20 more. Substitute compatibility should be verified for your specific system.
Is K742 still available?
K742 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