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311-420 — IBM 146.8GB 10K 2Gbps FC HS

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

311-420: IBM 146.8GB 10K 2Gbps FC HS.

The IBM 146.8GB 10K 2Gbps FC HS is a the manufacturer networking component designed for high-speed data center interconnects and enterprise network infrastructure. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, design_type: BIDIRECTIONAL, bore_diameter: 35.00 MILLIMETERS NOMINAL MM, contact_angle: 25.0 DEGREES MAXIMUM, overall_width: 1.0625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-156-4850, 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
311-420
NSN: 3110-00-156-4850
NIINs: 001564850, 009244505, 010229592
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 77237 — DANA OFF HIGHWAY PRODUCTS, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
design_typeBIDIRECTIONAL
bore_diameter35.00 MILLIMETERS NOMINAL MM
contact_angle25.0 DEGREES MAXIMUM
overall_width1.0625 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
overall_diameter4.000 INCHES NOMINAL IN
style_designatorLOADING GROOVE, NON-SEPARABLE
lubrication_materialGREASE
radio_frequency_rating1.0 GIGAHERTZ MINIMUM AND 2.0 GIGAHERTZ MAXIMUM
NSN3110-00-156-4850
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 311-420 · 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
•
146.8GB Capacity
•
10K RPM Speed
•
LUBRICATION MATERIAL: GREASE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 72.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
NONDEFINITIVE SPEC/STD DATA: 145 TYPE AND 00 GRADE
TYPICAL APPLICATIONS
  • Data center top-of-rack switching
  • High-speed server interconnects (10G/25G/40G/100G)
  • Storage network fabric (iSCSI, FCoE)
  • Campus and branch network infrastructure
  • Firewall and security appliance connectivity
  • WAN edge and SD-WAN deployments
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIALGREASE
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH1.0625 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER72.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
NONDEFINITIVE SPEC/STD DATA145 TYPE AND 00 GRADE
CONTACT ANGLE25.0 DEGREES MAXIMUM
LOAD DIRECTIONANGULAR
SUBSTITUTES & CROSS-REFERENCES 8
5207Reference document
IBM 146.8GB 10K 2Gbps FC HS
Reference document — Secondary reference
181-48Reference document
Same NSN cross-reference
Reference document — Secondary reference
713855Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BP50Reference document
Same NSN cross-reference
Reference document — Secondary reference
0058967-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
BLRCD1-9Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311-420?
311-420 is a IBM 146.8GB 10K 2Gbps FC HS.
What parts can replace 311-420?
There are 8 known substitutes for 311-420: 5207, 181-48, 713855 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 311-420?
311-420 is cataloged in the U.S. Government catalog under NSN 3110-00-156-4850. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.