6.1 CU. IN. HYDRAULIC MOTOR New, WHITE DRIVE PRODUCTS WR series model 255100F3701AAAAA hydraulic motor. The WR series motor incorporates the latest advances for smooth performance, efficiency and durability. Features include an optimized Roller Stator with seven precision rollers, three-zone spool valve, integral check valves, high pressure shaft seal and a provision for a case drain to reduce pressure on internal seals to improve product life. Interchangeable with the following motor lines: Dynamic BMPH, Danfoss DH, Char-lynn H/S, Parker/Ross MG/TB.