PartsTable
Technical Data Sheet
8903-1 ✓ 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

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include material: PLASTIC ENCLOSURE, bore_shape: STRAIGHT, bore_diameter: 5.00 MILLIMETERS NOMINAL MM, overall_width: 0.380 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN, load_direction: RADIAL, overall_height: 0.165 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-5303, 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
8903-1
NSN: 3110-00-156-5303
FSC: 3110
CAGE: 03848 — ARMA DIV AMBAC INDUSTRIES INC
SPECIFICATIONS
materialPLASTIC ENCLOSURE
bore_shapeSTRAIGHT
bore_diameter5.00 MILLIMETERS NOMINAL MM
overall_width0.380 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
load_directionRADIAL
overall_height0.165 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
overall_length1.145 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
surface_finishGROUND
mounting_methodUNTHREADED HOLE(S)
special_featuresJUNCTION PATTERN ARRANGEMENT: PNP
style_designatorCOUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
internal_configurationJUNCTION CONTACT
NSN3110-00-156-5303
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 8903-1 · 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
LOAD DIRECTION: RADIAL
BORE DIAMETER: 5.00 MILLIMETERS NOMINAL MM
BORE SHAPE: STRAIGHT
STYLE DESIGNATOR: COUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
MATERIAL: STEEL BALL
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
LOAD DIRECTIONRADIAL
BORE DIAMETER5.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
STYLE DESIGNATORCOUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
MATERIALSTEEL BALL
MATERIALSTEEL OUTER RING
SURFACE FINISHGROUND
OVERALL WIDTH5.0 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATIONSTANDARD
OVERALL OUTSIDE DIAMETER16.00 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
267508Interchangeable
interchangeable cross-reference
interchangeable
E5Interchangeable
interchangeable cross-reference
interchangeable
10015867-005Interchangeable
interchangeable cross-reference
interchangeable
GT4847Interchangeable
interchangeable cross-reference
interchangeable
0AKInterchangeable
interchangeable cross-reference
interchangeable
701081Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8903-1?
8903-1 is a RESISTOR,FIXED,WIRE WOUND,INDUCT.
What parts can replace 8903-1?
There are 27 known substitutes for 8903-1: 267508, E5, 10015867-005 and 24 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8903-1?
8903-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-5303. This indicates validated use in U.S. government and defense supply chains.
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