POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENTS that Roger S. Sherrard does hereby make,

constitute and appoint Thomas A. Piraino, Jr., Thomas L. Meyer, Aarti J. Patel

and Rhoda Minichillo as my true and lawful attorneys-in-fact with full power

and authority to act in my name and on my behalf in the execution and filing

of any Form 3, Form 4 or Form 5 required to be filed with the Securities and

Exchange Commission (the "Commission") pursuant to Section 16 of the

Securities Exchange Act of 1934 (the "Act"), in connection with my status

as an officer of Parker-Hannifin Corporation, hereby ratifying and

confirming all that said attorneys shall lawfully do or cause to be done

by virtue of this document.  This Power of Attorney shall remain in effect

until such time as the Commission shall receive from me a written

communication terminating the authority granted hereunder.



Dated this 31st day of October, 2003.





/s/ Roger S. Sherrard

Roger S. Sherrard