PartsTable
Technical Data Sheet
2278812-00 ✓ 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,LINEAR MOTION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440A OUTER RING A, bore_shape: STRAIGHT, alignment_type: RIGID, overall_length: 0.8600 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN, surface_finish: GROUND, special_features: SLOTTED OUTER RING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-790-4646, 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
2278812-00
NSN: 3110-00-790-4646
FSC: 3110
CAGE: 06401 — L3 TECHNOLOGIES, INC. DBA COMMUNICATION SYSTEMS-WEST DIV COMMUNICATION SYSTEMS-WEST (USA)
SPECIFICATIONS
materialSTEEL COMP 440A OUTER RING A
bore_shapeSTRAIGHT
alignment_typeRIGID
overall_length0.8600 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
surface_finishGROUND
shield_quantity2
special_featuresSLOTTED OUTER RING
style_designatorINSTRUMENT SERIES
features_providedMOUNTING GROOVE
bearing_ball_quantity4
working_bore_diameter0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
overall_outside_diameter0.6246 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
NSN3110-00-790-4646
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 2278812-00 · 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
BORE SHAPE: STRAIGHT
MATERIAL: STEEL COMP 440A OUTER RING A
STYLE DESIGNATOR: INSTRUMENT SERIES
BEARING BALL QUANTITY: 4
OVERALL OUTSIDE DIAMETER: 0.6246 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
FEATURES PROVIDED: MOUNTING GROOVE
TECHNICAL CHARACTERISTICS (FLIS)
BORE SHAPESTRAIGHT
MATERIALSTEEL COMP 440A OUTER RING A
STYLE DESIGNATORINSTRUMENT SERIES
MATERIALSTEEL COMP 304 SHIELD
MATERIALSTEEL COMP 304 BALL CIRCUIT
BEARING BALL QUANTITY4
OVERALL OUTSIDE DIAMETER0.6246 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
FEATURES PROVIDEDMOUNTING GROOVE
ALIGNMENT TYPERIGID
OVERALL LENGTH0.8600 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
HP8491B-OPT030Interchangeable
interchangeable cross-reference
interchangeable
18N-30Interchangeable
interchangeable cross-reference
interchangeable
8491B030Interchangeable
interchangeable cross-reference
interchangeable
8491A-003Interchangeable
interchangeable cross-reference
interchangeable
HP8491A OPT003Interchangeable
interchangeable cross-reference
interchangeable
6263496Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2278812-00?
2278812-00 is a BEARING,BALL,LINEAR MOTION.
What parts can replace 2278812-00?
There are 14 known substitutes for 2278812-00: HP8491B-OPT030, 18N-30, 8491B030 and 11 more. Substitute compatibility should be verified for your specific system.
Is 2278812-00 still available?
2278812-00 is currently cancelled.
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