UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 4
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
( ) Check this box if no longer subject to Section 16.
Form 4 or Form 5 obligations may continue. See Instructions 1(b).
1. Name and Address of Reporting Person
   COLLINS, DUANE E
   PARKER HANNIFIN CORPORATION
   6035 PARKLAND BOULEVARD
   CLEVELAND, OH  44124
   USA
2. Issuer Name and Ticker or Trading Symbol
   PARKER HANNIFIN CORPORATION
   PH
3. IRS or Social Security Number of Reporting Person (Voluntary)

4. Statement for Month/Year
   July 31, 2001
5. If Amendment, Date of Original (Month/Year)

6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
   (X) Director ( ) 10% Owner ( ) Officer (give title below) ( ) Other
   (specify below)
   CHAIRMAN OF THE BOARD
7. Individual or Joint/Group Filing (Check Applicable Line)
   (X) Form filed by One Reporting Person
   ( ) Form filed by More than One Reporting Person


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 Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned                                                 |
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1. Title of Security       |2.    |3.    |4.Securities Acquired (A)         |5.Amount of        |6.Dir |7.Nature of Indirect       |
                           | Transaction |  or Disposed of (D)              |  Securities       |ect   |  Beneficial Ownership     |
                           |      |      |                                  |  Beneficially     |(D)or |                           |
                           |      |    | |                  | A/|           |  Owned at         |Indir |                           |
                           | Date |Code|V|    Amount        | D |    Price  |  End of Month     |ect(I)|                           |
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Common stock               |      |    | |                  |   |           |22,750.89(1)       |I     |(1)                        |
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Common stock               |7/01/0|F   |V|2,930(2)          |D  |$42.31     |65,745             |D     |                           |
                           |1     |    | |                  |   |           |                   |      |                           |
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Common stock               |      |    | |                  |   |           |41,850             |I     |Wife                       |
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 Table II -- Derivative Securitites Acquired, Disposed of, or Beneficially Owned                                                   |
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1.Title of Derivative |2.Con-  |3.   |4.    |5.Number of De |6.Date Exer|7.Title and Amount  |8.Price|9.Number    |10.|11.Nature of|
  Security            |version |Transaction | rivative Secu |cisable and|  of Underlying     |of Deri|of Deriva   |Dir|Indirect    |
                      |or Exer |     |      | rities Acqui  |Expiration |  Securities        |vative |tive        |ect|Beneficial  |
                      |cise    |     |      | red(A) or Dis |Date(Month/|                    |Secu   |Securities  |(D)|Ownership   |
                      |Price of|     |      | posed of(D)   |Day/Year)  |                    |rity   |Benefi      |or |            |
                      |Deriva- |     |      |               |Date |Expir|                    |       |ficially    |Ind|            |
                      |tive    |     |      |           | A/|Exer-|ation|   Title and Number |       |Owned at    |ire|            |
                      |Secu-   |     |    | |           | D |cisa-|Date |   of Shares        |       |End of      |ct |            |
                      |rity    |Date |Code|V|  Amount   |   |ble  |     |                    |       |Month       |(I)|            |
___________________________________________________________________________________________________________________________________|
                                                                            
Phantom Stock Units   |1-for-1 |     |    | |           |   |     |     |            |       |       |2581.687(3) |I  |(3)         |
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Phantom Stock Units   |1-for-1 |     |    | |           |   |     |     |            |       |       |59,215(4)   |I  |(4)         |
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                      |        |     |    | |           |   |     |     |            |       |       |            |   |            |
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Explanation of Responses:
(1)  Parker Retirement Savings Plan, as of June 30, 2001, the latest date for
which information is available.
(2)  Surrender of shares to satisfy withholding taxes upon vesting of
previously issued restricted stock in a
transaction exempt under Rule
16b-3.
(3)  Savings Restoration Plan, as of June 30, 2001, the latest date for which
information is available.
(4)  Stock Option Deferral
Plan.
SIGNATURE OF REPORTING PERSON
Thomas A. Piraino, Jr., Attorney-in-Fact
DATE
August 15, 2001