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Technical Data Sheet
PartsTable / COMPONENT / 121187
121187 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include jaw_type: STRAIGHT, material: STEEL CORROSION RESISTING OVERALL, joint_type: BOX LOCK, handle_type: LOCK, overall_length: 9.000 INCHES NOMINAL IN, special_features: SERRATED TUNGSTEN CARBIDE JAWS; FOR USE IN OPEN HEART SURGERY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-586-8306, 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
121187
NSN: 3110-00-586-8306
FSC: 3110
CAGE: Z4732 — HAULMARK TRAILERS (AUSTRALIA) PTY LTD (AUS)
SPECIFICATIONS
jaw_typeSTRAIGHT
materialSTEEL CORROSION RESISTING OVERALL
joint_typeBOX LOCK
handle_typeLOCK
overall_length9.000 INCHES NOMINAL IN
special_featuresSERRATED TUNGSTEN CARBIDE JAWS; FOR USE IN OPEN HEART SURGERY
design_designationDEBAKEY
part_name_assigned_by_controlling_agencyHOLDER SUTURE NEEDLE DEBAKEY 9 IN. LG SERRATED TUNGSTEN CARB JAWS IN
NSN3110-00-586-8306
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121187 · 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: NORMAL ANGLE
•
OUTSIDE DIAMETER: 2.5625 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
BACKFACE CORNER RADIUS: 0.0460 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
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 DESIGNATORNORMAL ANGLE
OUTSIDE DIAMETER2.5625 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
BACKFACE CORNER RADIUS0.0460 INCHES NOMINAL IN
SPECIAL FEATURESDUTY CLASS LM SERIES
OVERALL WIDTH0.5500 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
5330000590897Interchangeable
interchangeable cross-reference
interchangeable
10932846Interchangeable
interchangeable cross-reference
interchangeable
2916FInterchangeable
interchangeable cross-reference
interchangeable
1611Interchangeable
interchangeable cross-reference
interchangeable
5231-45-5Interchangeable
interchangeable cross-reference
interchangeable
9-1026-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121187?
121187 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 121187?
There are 20 known substitutes for 121187: 5330000590897, 10932846, 2916F and 17 more. Substitute compatibility should be verified for your specific system.
Is 121187 still available?
121187 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026