Exhibit 23(b)



                         CONSENT OF INDEPENDENT AUDITORS
                         -------------------------------

We consent to the reference to our firm under the caption "Experts" and to the
incorporation by reference of our report dated November 29, 1999, with respect
to the consolidated financial statements and schedule of Commercial Intertech
Corp. included in its Annual Report (Form 10-K) for the year ended October 31,
1999, in the Proxy Statement of Commercial Intertech Corp. that is made a part
of the Registration Statement (Form S-4 No. 333-_____) and Prospectus of
Parker-Hannifin Corporation for the registration of 8,448,429 shares of its
common stock.


                                             /s/ Ernst & Young LLP
                                             -----------------------------
                                             ERNST & YOUNG LLP

Cleveland, Ohio
February 7, 2000