United States securities and exchange commission logo November 29, 2022 Todd B. Patriacca Chief Financial Officer Altra Industrial Motion Corp. 300 Granite Street, Suite 201 Braintree, MA 02184 Re: Altra Industrial Motion Corp. Form 10-K for the Fiscal Year Ended December 31, 2021 Filed February 28, 2022 File No. 001-33209 Dear Todd B. Patriacca: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Technology cc: Glenn Deegan