PartsTable
Technical Data Sheet
1284-0 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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

DRIVE,ENGINE,ELECTRICAL STARTER. Key specifications include material: FIBER CASE, body_style: TUBE TYPE, bore_shape: STRAIGHT, design_type: REUSABLE, input_phase: THREE SINGLE OPERATING POWER RQMT, temp_rating: 200.0 FAHRENHEIT NOMINAL DEGF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-421-7425, 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
MRO MRO_GENERAL 1284-0
NSN: 3110-00-421-7425
FSC: 3110
CAGE: 06144 — INDUSTRIAL TECTONICS BEARINGS CORPORATION DBA RBC BEARINGS INC DIV INDUSTRIAL TECTONICS BEARINGS (USA)
SPECIFICATIONS
materialFIBER CASE
body_styleTUBE TYPE
bore_shapeSTRAIGHT
design_typeREUSABLE
input_phaseTHREE SINGLE OPERATING POWER RQMT
temp_rating200.0 FAHRENHEIT NOMINAL DEGF
body_diameter2.250 INCHES NOMINAL IN
bore_diameter50.0 MILLIMETERS NOMINAL MM
overall_width19.000 INCHES NOMINAL IN
flow_directionOUTSIDE IN
overall_height6.970 INCHES NOMINAL IN
overall_length22.160 INCHES NOMINAL IN
NSN3110-00-421-7425
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1284-0 · 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
SURFACE FINISH: GROUND
BORE DIAMETER: 50.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER: 80.0 MILLIMETERS NOMINAL MM
RETAINER FABRICATION METHOD: MACHINED
PRECIOUS MATERIAL AND LOCATION: RETAINER SILVER
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6490 ASSN STD SINGLE MATERIAL RESPONSE INNER RING
MATERIAL: STEEL OUTER RING
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
BORE DIAMETER50.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER80.0 MILLIMETERS NOMINAL MM
RETAINER FABRICATION METHODMACHINED
PRECIOUS MATERIAL AND LOCATIONRETAINER SILVER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6490 ASSN STD SINGLE MATERIAL RESPONSE INNER RING
MATERIALSTEEL OUTER RING
MATERIALSTEEL RETAINER
MATERIALSTEEL INNER RING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6415 ASSN STD SINGLE MATERIAL RESPONSE RETAINER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
12840Interchangeable
interchangeable cross-reference
interchangeable
12840-4STL0015Interchangeable
interchangeable cross-reference
interchangeable
12840-4Interchangeable
interchangeable cross-reference
interchangeable
10BM-299-21Interchangeable
interchangeable cross-reference
interchangeable
A31RH6U299-7Interchangeable
interchangeable cross-reference
interchangeable
A2167Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1284-0?
1284-0 is a DRIVE,ENGINE,ELECTRICAL STARTER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1284-0?
There are 16 known substitutes for 1284-0: 12840, 12840-4STL0015, 12840-4 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1284-0?
1284-0 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-421-7425. This indicates validated use in U.S. government and defense supply chains.
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