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Technical Data Sheet
PartsTable / COMPONENT / C678Q
C678Q ✓ 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 ROLLER,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 5140 OVERALL, overall_length: 1.1875 INCHES NOMINAL IN, style_designator: NEEDLE ROLLER, SPHERICAL ENDS, rolling_element_diameter: 0.1876 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-183-9914, 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
C678Q
NSN: 3110-00-183-9914
FSC: 3110
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL COMP 5140 OVERALL
overall_length1.1875 INCHES NOMINAL IN
style_designatorNEEDLE ROLLER, SPHERICAL ENDS
rolling_element_diameter0.1876 INCHES NOMINAL IN
NSN3110-00-183-9914
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: C678Q · 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
•
MATERIAL: STEEL COMP 5140 OVERALL
•
STYLE DESIGNATOR: NEEDLE ROLLER, SPHERICAL ENDS
•
ROLLING ELEMENT DIAMETER: 0.1876 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.1875 INCHES NOMINAL IN
MATERIALSTEEL COMP 5140 OVERALL
STYLE DESIGNATORNEEDLE ROLLER, SPHERICAL ENDS
ROLLING ELEMENT DIAMETER0.1876 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
1089Interchangeable
interchangeable cross-reference
interchangeable
STS0331-1Interchangeable
interchangeable cross-reference
interchangeable
7527453P11Interchangeable
interchangeable cross-reference
interchangeable
CT343-11Interchangeable
interchangeable cross-reference
interchangeable
00077Interchangeable
interchangeable cross-reference
interchangeable
SS-P-196 TY1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C678Q?
C678Q is a ROLLER,BEARING.
What parts can replace C678Q?
There are 28 known substitutes for C678Q: 1089, STS0331-1, 7527453P11 and 25 more. Substitute compatibility should be verified for your specific system.
Is C678Q still available?
C678Q 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: July 2026