Exhibit 99.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report of Twin Disc, Incorporated – The Accelerator 401 (k) Savings Plan (the “Plan”) on Form 11-K for the plan year ending December 31, 2010, as filed with the Securities and Exchange Commission as of the date hereof (the “Report”) , I, Christopher J. Eperjesy, Vice President – Finance, Chief Financial Officer and Treasurer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:
| (1) | the Report fully complies with Section 13(a) or 15(d) of the Securities Exchange Act 1934, and |
| (2) | the information contained in the report fairly presents, in all material respects, the financial condition of the Plan. |
| Date: June 27, 2011 | /s/ Michael E. Batten |
| Michael E. Batten | |
| Chairman and Chief Executive Officer |