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Technical Data Sheet
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TM3994 — Technical Data Sheet

✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cone_width: 1.1830 INCHES NOMINAL IN, bore_diameter: 2.6250 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.2188 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-100-3096, 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
TM3994
NSN: 3110-00-100-3096
FSC: 3110
CAGE: 338X5 — ND DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.1830 INCHES NOMINAL IN
bore_diameter2.6250 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
cone_corner_radius0.2188 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-3096
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: TM3994 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE WIDTH: 1.1830 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.2188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BORE DIAMETER: 2.6250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
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
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE WIDTH1.1830 INCHES NOMINAL IN
CONE CORNER RADIUS0.2188 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
BORE DIAMETER2.6250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
CR63117PC201InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
394035PC201InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
CR54505PC201InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3994InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
115-950InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
TMT-99-11MMInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TM3994?
TM3994 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace TM3994?
There are 15 known substitutes for TM3994: CR63117PC201, 394035PC201, CR54505PC201 and 12 more. Substitute compatibility should be verified for your specific system.
Is TM3994 still available?
TM3994 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: October 2026