POWER OF ATTORNEY



        Know all by these presents, that the undersigned hereby constitutes and appoints each of

Joseph R. Leonti, Stephen D. Klinge and Kelley B. Standard, or any of them signing singly, and with

full power of substitution, the undersigneds true and lawful attorney-in-fact to:



(1) prepare, execute in the undersigned?s name and on the undersigned?s behalf, and

 submit to the U.S. Securities and Exchange Commission (the SEC) a Form ID, including

 amendments thereto, and any other documents necessary or appropriate to obtain codes

 and passwords enabling the undersigned to make electronic filings with the SEC of

 reports required by Section 16a of the Securities Exchange Act of 1934 or any rule

 or regulation of the SEC;



(2) execute for and on behalf of the undersigned, in the undersigneds capacity as an

 officer and/or director of Parker-Hannifin Corporation (the Company), Forms 3, 4, and 5

 in accordance with Section 16a of the Securities Exchange Act of 1934 and the rules

 thereunder;



(3) do and perform any and all acts for and on behalf of the undersigned which may be

 necessary or desirable to complete and execute any such Form 3, 4, or 5, complete

 and execute any amendment or amendments thereto, and timely file such form with the SEC

 and any stock exchange or similar authority; and



(4) take any other action of any type whatsoever in connection with the foregoing which,

 in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of,

 or legally required by, the undersigned, it being understood that the documents executed

 by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney

 shall be in such form and shall contain such terms and conditions as such attorney-in-fact

 may approve in such attorney-in-fact's discretion.



       The undersigned hereby grants to each such attorney-in-fact full power and authority to do

and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the

exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the

undersigned might or could do if personally present, with full power of substitution or revocation,

hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-facts substitute

or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the

rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact,

in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company

assuming, any of the undersigneds responsibilities to comply with Section 16 of the Securities

Exchange Act of 1934.



       This Power of Attorney shall remain in full force and effect until the undersigned is no

longer required to file Forms 3, 4, and 5 with respect to the undersigneds holdings of and

transactions in securities issued by the Company, unless earlier revoked by the undersigned

in a signed writing delivered to the foregoing attorneys-in-fact.



        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of

this 9th day of April, 2021.



/s/ William F. Lacey

William F. Lacey