Twin Disc (TWIN) 10-K/A 2011 FY Annual report (amended)

EXHIBIT 31b

CERTIFICATIONS

I, Christopher J. Eperjesy, certify that:

1.   I have reviewed this annual report on Form 10-K/A, Amendment No. 1, of Twin Disc, Incorporated;

2.   Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

Date: September 19, 2011
	/s/ CHRISTOPHER J. EPERJESY
	Christopher J. Eperjesy
	Vice President – Finance, Chief Financial Officer and Treasurer