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302578 — ROLLER,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

302578: ROLLER,BEARING.

The ROLLER,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1045 OVERALL, first_end_style: CHAMFERED, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL, pin_overall_length: 0.223 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN, pin_overall_diameter: 0.1542 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN, first_end_taper_angle: 45.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-117-0633, 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
302578
NSN: 3110-00-117-0633
NIINs: 001170633, 002480048, 016242068
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL COMP 1045 OVERALL
first_end_styleCHAMFERED
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
pin_overall_length0.223 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
pin_overall_diameter0.1542 INCHES MINIMUM AND 0.1562 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.005 INCHES MINIMUM AND 0.010 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN3110-00-117-0633
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 302578 · 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
•
ROLLING ELEMENT DIAMETER: 0.1247 INCHES MINIMUM AND 0.1249 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: NEEDLE ROLLER, SPHERICAL ENDS
•
MATERIAL: STEEL COMP 5140 OVERALL
TECHNICAL CHARACTERISTICS
ROLLING ELEMENT DIAMETER0.1247 INCHES MINIMUM AND 0.1249 INCHES MAXIMUM IN
STYLE DESIGNATORNEEDLE ROLLER, SPHERICAL ENDS
OVERALL LENGTH1.7920 INCHES MINIMUM AND 1.8120 INCHES MAXIMUM IN
SPECIAL FEATURESLAPPED FINISH
MATERIALSTEEL COMP 5140 OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
862365Reference document
Same NSN cross-reference
Reference document — Secondary reference
681670Reference document
Same NSN cross-reference
Reference document — Secondary reference
621G8Reference document
Same NSN cross-reference
Reference document — Secondary reference
B1316QReference document
Same NSN cross-reference
Reference document — Secondary reference
83946AReference document
Same NSN cross-reference
Reference document — Secondary reference
82769ESPC83946AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 302578?
302578 is a ROLLER,BEARING.
What parts can replace 302578?
There are 8 known substitutes for 302578: 862365, 681670, 621G8 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 302578?
302578 is cataloged in the U.S. Government catalog under NSN 3110-00-117-0633. This indicates validated use in U.S. government and defense supply chains.
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