<SEC-DOCUMENT>0000886346-21-000043.txt : 20210312
<SEC-HEADER>0000886346-21-000043.hdr.sgml : 20210312
<ACCEPTANCE-DATETIME>20210312084546
ACCESSION NUMBER:		0000886346-21-000043
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210310
FILED AS OF DATE:		20210312
DATE AS OF CHANGE:		20210312

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Flynn Peter J.
		CENTRAL INDEX KEY:			0001781020

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11406
		FILM NUMBER:		21735546

	MAIL ADDRESS:	
		STREET 1:		KADANT INC.
		STREET 2:		1 TECHNOLOGY PARK DRIVE
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KADANT INC
		CENTRAL INDEX KEY:			0000886346
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY (NO METALWORKING MACHINERY) [3550]
		IRS NUMBER:				521762325
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0102

	BUSINESS ADDRESS:	
		STREET 1:		ONE TECHNOLOGY PARK DRIVE
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886
		BUSINESS PHONE:		(978) 776-2000

	MAIL ADDRESS:	
		STREET 1:		ONE TECHNOLOGY PARK DRIVE
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THERMO FIBERTEK INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
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    <footnotes>
        <footnote id="F1">The shares represent the partial settlement under a time-based RSU award granted March 7, 2018. One-third of the RSU vested and became distributable on March 10, 2021 and was converted to common stock on a one-for-one basis on the vesting date.</footnote>
        <footnote id="F2">The shares represent the partial settlement under a time-based RSU award granted March 4, 2019.  One-third of the RSU vested and became distributable on March 10, 2021 and was converted to common stock on a one-for-one basis on the vesting date.</footnote>
        <footnote id="F3">The shares represent the partial settlement under a time-based RSU award granted March 2, 2020.  One-third of the RSU vested and became distributable on March 10, 2021 and was converted to common stock on a one-for-one basis on the vesting date.</footnote>
        <footnote id="F4">The shares represent the partial settlement under a performance-based RSU award granted March 2, 2020.  One-third of the RSU vested and became distributable on March 10, 2021 and was converted to common stock on a one-for-one basis on the vesting date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Stacy D. Krause, by power of attorney</signatureName>
        <signatureDate>2021-03-12</signatureDate>
    </ownerSignature>
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</SEC-DOCUMENT>
