Largest Hydraulic Motor in the World

Tha largest hydraulic motors in the world are between 9000 and 250,000 cubic centimeters/rev or 1,000 and 15,000 cubic inches/rev.

http://www.directindustry.com/prod/bosch-rexroth-hagglunds-drives/hydraulic-motors-for-direct-mounting-in-heavy-industry-7016-16458.html