Abstract: A pallet jack includes a forked frame and a jacking cylinder, and is supported at least in part by left and right steering wheels. A drive wheel may be located between the left and right steering wheels, with a center of each of the steering wheels and a center of the drive wheel located in a co-planar orientation. A motor provides power to the drive wheel.

Abstract: A pallet jack power assembly upgrades a manually powered pallet jack to provide a motor-driven drive wheel. In one example, the manually powered pallet jack includes left and right steering wheels separated by a narrow distance. A frame of the pallet jack power assembly may be adapted for attachment to the pallet jack. The frame supports a drive axle, which in turn supports a drive wheel. Attachment of the frame of the pallet jack power assembly locates the drive wheel between the left and right steering wheels. The drive axle and a steering axle, supporting the left and right steering wheels of the pallet jack, may be located in a same vertical plane. A biasing device, such as a spring, may be used to provide a downward force on the drive wheel, thereby increasing friction between the drive wheel and the floor.