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4651-4652 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

4651-4652: BEARING,ROLLER,TAPERED.

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 COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CUP, cup_width: 0.6250 INCHES NOMINAL IN, cone_width: 0.7813 INCHES NOMINAL IN, bore_diameter: 0.8125 INCHES NOMINAL IN, overall_width: 0.7813 INCHES NOMINAL IN, standout_width: 0.1563 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-5990, 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
4651-4652
NSN: 3110-00-100-5990
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 4320 OR STEEL COMP 4620 OR STEEL COMP 8620 OR STEEL COMP E52100 CUP
cup_width0.6250 INCHES NOMINAL IN
cone_width0.7813 INCHES NOMINAL IN
bore_diameter0.8125 INCHES NOMINAL IN
overall_width0.7813 INCHES NOMINAL IN
standout_width0.1563 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.0620 INCHES NOMINAL IN
backface_corner_radius0.0620 INCHES NOMINAL IN
overall_outside_diameter1.9380 INCHES NOMINAL IN
nondefinitive_spec/std_data751 TYPE
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-5990
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 4651-4652 · 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
•
CUP WIDTH: 0.6250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE CONE
•
OVERALL OUTSIDE DIAMETER: 1.9380 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
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
CUP WIDTH0.6250 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE CONE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE CUP
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE ROLLER
OVERALL WIDTH0.7813 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.9380 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0620 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA751 TYPE
CONE CORNER RADIUS0.0620 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 8
83919HReference document
Same NSN cross-reference
Reference document — Secondary reference
4CV-A443D-PC11Reference document
Same NSN cross-reference
Reference document — Secondary reference
4CVDPC11Reference document
Same NSN cross-reference
Reference document — Secondary reference
379474Reference document
Same NSN cross-reference
Reference document — Secondary reference
V902Reference document
Same NSN cross-reference
Reference document — Secondary reference
4L ASSEMBLY 1-LD ITEM 11Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4651-4652?
4651-4652 is a BEARING,ROLLER,TAPERED.
What parts can replace 4651-4652?
There are 8 known substitutes for 4651-4652: 83919H, 4CV-A443D-PC11, 4CVDPC11 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4651-4652?
4651-4652 is cataloged in the U.S. Government catalog under NSN 3110-00-100-5990. This indicates validated use in U.S. government and defense supply chains.
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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.