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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000891109-04-000084.txt : 20040507
<SEC-HEADER>0000891109-04-000084.hdr.sgml : 20040507
<ACCEPTANCE-DATETIME>20040507121009
ACCESSION NUMBER:		0000891109-04-000084
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040505
FILED AS OF DATE:		20040507

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CRITELLI MICHAEL J
		CENTRAL INDEX KEY:			0001188584

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-56644
		FILM NUMBER:		04787740

	BUSINESS ADDRESS:	
		STREET 1:		EATON CENTER
		STREET 2:		1111 SUPERIOR AVENUE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44114-2584
		BUSINESS PHONE:		2165235000

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EATON CORP
		CENTRAL INDEX KEY:			0000031277
		STANDARD INDUSTRIAL CLASSIFICATION:	MISC INDUSTRIAL & COMMERCIAL MACHINERY & EQUIPMENT [3590]
		IRS NUMBER:				340196300
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		EATON CTR
		STREET 2:		1111 SUPERIOR AVE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44114-2584
		BUSINESS PHONE:		2165235000

	MAIL ADDRESS:	
		STREET 1:		1111 SUPERIOR AVENUE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44114

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EATON YALE & TOWNE INC
		DATE OF NAME CHANGE:	19710822
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-05-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000031277</issuerCik>
        <issuerName>EATON CORP</issuerName>
        <issuerTradingSymbol>ETN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188584</rptOwnerCik>
            <rptOwnerName>CRITELLI MICHAEL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PITNEY BOWES INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1 ELMCROFT ROAD</rptOwnerStreet2>
            <rptOwnerCity>STAMFORD</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06926-0700</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2004-05-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1000.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>26.53</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>26.53</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-05-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1000.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>26.53</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>1999-04-01</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2008-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1000.00</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1996.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These options are exercisable in their entirety 6 months from the date of grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael J. Critelli, by /s/ Claudia J. Taller, Attorney-</signatureName>
        <signatureDate>2004-05-07</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----