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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 11-K

               [X] ANNUAL REPORT PURSUANT TO SECTION 15(D) OF THE
                       SECURITIES AND EXCHANGE ACT OF 1934

For the Fiscal Year Ended
December 31, 1999                             Commission File Number (333-00289)
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             ROBBINS & MYERS, INC. SAVINGS PLAN FOR UNION EMPLOYEES
                                 (Name of Plan)
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                              ROBBINS & MYERS, INC.
                              1400 Kettering Tower
                               Dayton, Ohio 45423
                                 (937) 222-2610
         (Name of Issuer of Security, held pursuant to Plan and address
                       of its principal executive office)

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                              REQUIRED INFORMATION

         The Robbins & Myers, Inc. Savings Plan for Union Employees (the Plan)
is subject to the Employee Retirement Income Security Act of 1974.

         Item 4. In lieu of the requirements of Items 1, 2 and 3 of this Form
11-K, the following financial statements of the Plan, notes thereto, and Report
of Independent Auditors thereon are being filed as Exhibit 99.1 to this Report:

         (a)      Statements of Assets Available for Benefits - December 31,
                  1999 and 1998

         (b)      Statement of Changes in Assets Available for Benefits - for
                  the year ended December 31, 1999

         (c)      Notes to Financial Statements;

         (d)      Schedule of Assets Held for Investment Purposes - December 31,
                  1999; and

         (e)      Report of Independent Auditors.

         The consent of Independent Auditors to the incorporation by reference
of the foregoing financial statements in Registration statement on Form S-8 (No.
333-00289) is being filed as Exhibit 23.1 to this Report.

                                   SIGNATURES

         The Plan. Pursuant to the requirements of the Securities Exchange Act
of 1934, the persons who administer the Robbins & Myers, Inc. Savings Plan for
Union Employees have duly caused this annual report to be signed on its behalf
by the undersigned hereunto duly authorized.

                                     ROBBINS & MYERS, INC. SAVINGS
                                     PLAN FOR UNION EMPLOYEES

                                     By /s/ Kevin J. Brown
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                                             Name:    Kevin J. Brown
                                             Title:   Member, Corporate Benefits
                                                      Committee
                                             Dated:   June 28, 2000


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                                INDEX TO EXHIBITS

         The following Exhibits are being filed with this Annual Report on Form
11-K:

Exhibit
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(23)              CONSENT OF EXPERTS AND COUNSEL

                  23.1 Consent of Ernst & Young LLP.

(99)              ADDITIONAL EXHIBITS

                  99.1 Audited Financial Statement of Robbins & Myers, Inc.
                  Savings Plan for Union Employees as of December 31, 1999 and
                  1998 and for the year ended December 31, 1999.