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Technical Data Sheet
PartsTable / COMPONENT / 7890770-001
7890770-001 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT, bore_diameter: 2.4997 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM IN, overall_width: 0.2700 INCHES MINIMUM AND 0.2720 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND, special_features: 7 TO 8 DROPS OF SPECIFIED LUBRICANT FROM A NO. 27 NEEDLE.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-102-1923, 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
7890770-001
NSN: 3110-01-102-1923
FSC: 3110
CAGE: 09691 — L3HARRIS MAS INC DIV L3HARRIS MAS INC. (CAN)
SPECIFICATIONS
bore_shapeSTRAIGHT
bore_diameter2.4997 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM IN
overall_width0.2700 INCHES MINIMUM AND 0.2720 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
special_features7 TO 8 DROPS OF SPECIFIED LUBRICANT FROM A NO. 27 NEEDLE
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0012 INCHES MINIMUM RADIAL AND 0.0016 INCHES MAXIMUM RADIAL IN
lubrication_materialOIL
overall_outside_diameter2.9997 INCHES MINIMUM AND 3.0000 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
NSN3110-01-102-1923
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 7890770-001 · 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
•
INTERNAL CLEARANCE: 0.0012 INCHES MINIMUM RADIAL AND 0.0016 INCHES MAXIMUM RADIAL IN
•
SURFACE FINISH: GROUND
•
LOAD DIRECTION: RADIAL
•
SHIELD QUANTITY: 2
•
STANDARD TOLERANCE DESIGNATION: ABEC NO. 5T
•
LUBRICATION MATERIAL: OIL
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL CLEARANCE0.0012 INCHES MINIMUM RADIAL AND 0.0016 INCHES MAXIMUM RADIAL IN
SURFACE FINISHGROUND
LOAD DIRECTIONRADIAL
SHIELD QUANTITY2
STANDARD TOLERANCE DESIGNATIONABEC NO. 5T
SPECIAL FEATURES7 TO 8 DROPS OF SPECIFIED LUBRICANT FROM A NO. 27 NEEDLE
LUBRICATION MATERIALOIL
BORE SHAPESTRAIGHT
RETAINER FABRICATION METHODMACHINED
OVERALL WIDTH0.2700 INCHES MINIMUM AND 0.2720 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
HP-557Interchangeable
interchangeable cross-reference
interchangeable
7000051871Interchangeable
interchangeable cross-reference
interchangeable
3TKLS40-48-CIREFInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7890770-001?
7890770-001 is a BEARING,BALL,ANNULAR.
What parts can replace 7890770-001?
There are 3 known substitutes for 7890770-001: HP-557, 7000051871, 3TKLS40-48-CIREF. Substitute compatibility should be verified for your specific system.
What is the NSN for 7890770-001?
7890770-001 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-102-1923. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026