PartsTable
Technical Data Sheet
3-9-4B ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: STEEL CORROSION RESISTING FILTERING MEDIUM, mesh_size: 100.0, bore_shape: STRAIGHT, shaft_type: ROUND, SLOTTED SINGLE SHAFT, body_length: 3.125 INCHES NOMINAL IN, temp_rating: 410.0 FAHRENHEIT NOMINAL DEGF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8499, 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
MRO MRO_GENERAL 3-9-4B
NSN: 3110-00-144-8499
FSC: 3110
CAGE: 30760 — INGERSOLL RAND CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FILTERING MEDIUM
mesh_size100.0
bore_shapeSTRAIGHT
shaft_typeROUND, SLOTTED SINGLE SHAFT
body_length3.125 INCHES NOMINAL IN
temp_rating410.0 FAHRENHEIT NOMINAL DEGF
shaft_length0.562 INCHES NOMINAL SINGLE SHAFT IN
bore_diameter15.00 MILLIMETERS NOMINAL MM
mounting_typeINLET CONNECTION AND OUTLET CONNECTION LINE
overall_width13.0 MILLIMETERS NOMINAL MM
wire_diameter0.005 INCHES NOMINAL IN
inclosure_typeUNINCLOSED
NSN3110-00-144-8499
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3-9-4B · 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
OVERALL OUTSIDE DIAMETER: 42.00 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATION: STANDARD
LOAD DIRECTION: RADIAL
BORE SHAPE: STRAIGHT
SURFACE FINISH: GROUND
BORE DIAMETER: 15.00 MILLIMETERS NOMINAL MM
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER42.00 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
BORE DIAMETER15.00 MILLIMETERS NOMINAL MM
STANDARD TOLERANCE DESIGNATIONABEC NO.1
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA111 TYPE AND 1 CLASS AND 00 GRADE
OVERALL WIDTH13.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
43603Interchangeable
interchangeable cross-reference
interchangeable
3-18152Interchangeable
interchangeable cross-reference
interchangeable
678-1143-010Interchangeable
interchangeable cross-reference
interchangeable
12208Interchangeable
interchangeable cross-reference
interchangeable
631-30Interchangeable
interchangeable cross-reference
interchangeable
8090402Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-9-4B?
3-9-4B is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 3-9-4B?
There are 32 known substitutes for 3-9-4B: 43603, 3-18152, 678-1143-010 and 29 more. Substitute compatibility should be verified for your specific system.
Is 3-9-4B still available?
3-9-4B is currently cancelled.
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