-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PWseyZi1V0iIaMmxK26FMQi8DI0VPvSivjeopIqRK+lY1Z003Sfyy0dHaIpRIKUf
 KyWbpqM1j4hSDqeaMnI7UA==

<SEC-DOCUMENT>0001179110-05-016039.txt : 20050810
<SEC-HEADER>0001179110-05-016039.hdr.sgml : 20050810
<ACCEPTANCE-DATETIME>20050810144625
ACCESSION NUMBER:		0001179110-05-016039
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050809
FILED AS OF DATE:		20050810
DATE AS OF CHANGE:		20050810

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			O BRIEN DANIEL J
		CENTRAL INDEX KEY:			0001239638

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51486
		FILM NUMBER:		051013186

	BUSINESS ADDRESS:	
		STREET 1:		WHITNEY & CO
		STREET 2:		177 BROAD STREET
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06901

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RBC Bearings INC
		CENTRAL INDEX KEY:			0001324948
		STANDARD INDUSTRIAL CLASSIFICATION:	BALL & ROLLER BEARINGS [3562]
		IRS NUMBER:				954372080

	BUSINESS ADDRESS:	
		STREET 1:		ONE TRIBOLOGY CENTER
		CITY:			OXFORD
		STATE:			CT
		ZIP:			06478
		BUSINESS PHONE:		(203) 267 7001

	MAIL ADDRESS:	
		STREET 1:		ONE TRIBOLOGY CENTER
		CITY:			OXFORD
		STATE:			CT
		ZIP:			06478
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3/A -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2005-08-09</periodOfReport>

    <dateOfOriginalSubmission>2005-08-09</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001324948</issuerCik>
        <issuerName>RBC Bearings INC</issuerName>
        <issuerTradingSymbol>ROLL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001239638</rptOwnerCik>
            <rptOwnerName>O BRIEN DANIEL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>177 BROAD STREET, 15TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>STAMFORD</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06901</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Class A Voting Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote 1.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Class B Exchangeable Convertible Participating Pfd Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote 1.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Shares owned by Whitney RBHC Investor, LLC, of which Whitney V, L.P. is the sole managing member.  The undersigned is a managing member of Whitney Equity Partners V, LLC, the general partner of Whitney V, L.P., and has an interest in a limited partner of Whitney V, L.P. The undersigned may be deemed to share voting and dispositive power with respect to such shares. The undersigned disclaims beneficial ownership of such shares except to the extent of his proportionate interest.</footnote>
        <footnote id="F2">Class A Voting Common Stock and Class B Exchangeable Convertible Participating Preferred Stock will be converted into 7,954,493 shares of Common Stock upon closing of the Issuer's initial public offering.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Daniel J. O'Brien</signatureName>
        <signatureDate>2005-08-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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