Exhibit 5.1

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		FIRM / AFFILIATE OFFICES
		Beijing		Moscow
		Boston		Munich
		Brussels		New York
		Century City		Orange County
		Chicago		Paris
August 2, 2021		Dubai		Riyadh
		Düsseldorf		San Diego
		Frankfurt		San Francisco
		Hamburg		Seoul
Colfax Corporation		Hong Kong		Shanghai
2711 Centerville Road, Suite 400		Houston		Silicon Valley
Wilmington, Delaware 19808		London		Singapore
		Los Angeles		Tokyo
		Madrid		Washington, D.C.
		Milan

Re: Registration Statement No. 333-253236

 6,544,522 Shares of Common Stock

Ladies and Gentlemen:

We have acted as special counsel to Colfax Corporation, a Delaware corporation (the “Company”), in connection with the sale by certain shareholders of the Company (the “Selling Shareholders”) of 6,544,522 shares of the Company’s common stock, par value $0.001 per share (the “Shares”). The Shares are included in a registration statement on Form S-3 under the Securities Act of 1933, as amended (the “Act”), filed with the Securities and Exchange Commission (the “Commission”) on February 18, 2021 (Registration No. 333-253236) (as so filed and as amended, the “Registration Statement”), a base prospectus, dated February 18, 2021, included in the Registration Statement at the time it originally became effective (the “Base Prospectus”), and a final prospectus supplement, dated July 28, 2021, filed with the Commission pursuant to Rule 424(b) under the Act (together with the Base Prospectus, the “Prospectus”), and are being offered pursuant to an underwriting agreement, dated July 28, 2021 (the “Underwriting Agreement”), among the Company, the Selling Shareholders and the representative of the several underwriters named therein.

This opinion is being furnished in connection with the requirements of Item 601(b)(5) of Regulation S-K under the Act, and no opinion is expressed herein as to any matter pertaining to the contents of the Registration Statement or related Prospectus, other than as expressly stated herein with respect to the sale of the Shares.

As such counsel, we have examined such matters of fact and questions of law as we have considered appropriate for purposes of this letter. With your consent, we have relied upon certificates and other assurances of officers of the Company and others as to factual matters without having independently verified such factual matters. We are opining herein as to the internal laws of the Delaware General Corporation Law (the “DGCL”), and we express no opinion with respect to any other laws.

Subject to the foregoing and the other matters set forth herein, it is our opinion that, as of the date hereof, the Shares have been duly authorized by all necessary corporate action of the

August 2, 2021

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Company and are validly issued, fully paid and non-assessable. In rendering the foregoing opinion, we have assumed that the Company will comply with all applicable notice requirements regarding uncertificated shares provided in the DGCL.

This opinion is for your benefit in connection with the Registration Statement and may be relied upon by you and by persons entitled to rely upon it pursuant to the applicable provisions of the Act. We consent to your filing this opinion as an exhibit to the Company’s Current Report on Form 8-K, dated August 2, 2021, and to the reference to our firm in the Prospectus under the heading “Legal Matters.” In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission thereunder.

Very truly yours,

/s/ Latham & Watkins LLP