Exhibit 32

                                  CERTIFICATION
                                  -------------

      Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906
                        of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, each of the undersigned officers of Greatbatch, Inc.
(the "Company"), does hereby certify, to such officer's knowledge, that:

The Quarterly Report on Form 10-Q for the quarter ended June 29, 2007 (the "Form
10-Q ") of the Company fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934 and the information contained in
the Form 10-Q fairly presents, in all material respects, the financial condition
and results of operations of the Company.



Dated: August 7, 2007         /s/ Thomas J. Hook
                              --------------------------------------------
                              Thomas J. Hook
                              President and Chief Executive Officer
                              (Principal Executive Officer)


Dated: August 7, 2007         /s/ Thomas J. Mazza
                              ------------------------------------
                              Thomas J. Mazza
                              Senior Vice President and Chief Financial Officer
                              (Principal Financial Officer)

This certification is being furnished solely to accompany this Form 10-Q
pursuant to 18 U.S.C. Section 1350, and is not being filed for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise, and
is not to be deemed incorporated by reference into any filing of the Company
except to the extent the company specifically incorporates it by reference
therein.

                                     - 1 -