Abstract: This ball screw grease composition for a rack-assisted electric power steering contains a thickener, a base oil, and at least one compound selected from the group consisting of a Ca sulfonates, fatty acids, and triglycerides, wherein the kinematic viscosity of the base oil at 40° C. is 4-100 mm2/s, and the worked penetration of the composition is 265-385.

Abstract: To achieve a cleaning module and a substrate processing apparatus that can improve the cleaning capability for a substrate with a simple structure. A cleaning module includes a first transfer mechanism 210-1, an ultrasonic cleaning tank 440, a transfer machine 420, and a second transfer mechanism 210-2. The first transfer mechanism 210-1 is for transferring a substrate WF with a surface to be polished facing downward up to a substrate grip or release position 418 on a downstream side along a transfer passage 405. The ultrasonic cleaning tank 440 is disposed at a position spaced apart from the transfer passage 405 and is for cleaning a substrate WF with the surface to be polished facing downward. The transfer machine 420 is for transferring the substrate WF between the substrate grip or release position 418 of the transfer passage 405 and the ultrasonic cleaning tank 440.

Abstract: A plating apparatus enabling a user to conduct maintenance of a substrate holder while an operation of the plating apparatus is being performed is disclosed. The plating apparatus includes: a processing section for plating a substrate; a storage container configured to store the substrate holder for holding the substrate; a transport machine configured to transport the substrate holder between the processing section and the storage container; a maintenance area adjacent to the storage container; and a substrate-holder carrier supported by the storage container. The substrate-holder carrier is movable between the storage container and the maintenance area while supporting the substrate holder.

Abstract: A plating apparatus enabling a user to conduct maintenance of a substrate holder while an operation of the plating apparatus is being performed is disclosed. The plating apparatus includes: a processing section for plating a substrate; a storage container configured to store the substrate holder for holding the substrate; a transport machine configured to transport the substrate holder between the processing section and the storage container; a maintenance area adjacent to the storage container; and a substrate-holder carrier supported by the storage container. The substrate-holder carrier is movable between the storage container and the maintenance area while supporting the substrate holder.