PURPOSE: To obtain a portable press suitable for operation at elevated spots by connecting a prime mover section, a speed reducing section and an oil machine section successively and providing a sliding section between a fixed section connected to the oil machine section and the oil machine section, and letting the oil flow to the oil tank section, oil machine section and sliding section by operation of the operating section.

CONSTITUTION: A prime mover section 1, a speed reducing section 2 and an oil machine section 3 are connected successively, and a sliding section is provided between a fixed section 4 connected to the oil machine section 3 and the oil machine section 3. Further, an oil tank section 6 and an operating section 7 are made to communicate to the oil machine section. The oil that flowed from the oil tank section 6 to the oil machine 3 by operation of the operating section 7 flows to the sliding section or is unloaded in the oil tank section 6. The prime mover section 1 and the speed reducing section 2 are connected by a flange 1a and an intermediate adapter 16. A gear 1d of a motor shaft 1c and a gear 2b of a worm shaft 2a pivoted to the speed reducing gear 2 are engaged inside of it.