Abstract: A device is disclosed for indicating the lubricating quality of a lubricating oil for a machine. The device comprises a frame and a rotatable shaft having a journal for rotation with the shaft. A housing having an internal cavity is mounted to receive the rotatable shaft with the journal disposed within the internal cavity of the housing. A journal-engaging member is mounted in the internal cavity for engaging the journal to establish a normal force between the journal-engaging member and the journal. An oil outlet and an oil inlet communicates with the internal cavity in the housing. The oil inlet and oil outlet are connected to a machine for circulating lubricating oil between the housing and the machine whereby the lubricating oil is directed between the journal and the journal-engaging member. An electric motor drives the rotatable shaft relative to the housing.

Abstract: A device is disclosed for indicating the lubricating quality of a lubricating oil for a machine. The device comprises a frame rotatably mounting a shaft. The rotatable shaft has a journal for rotation with the shaft. A housing having an internal cavity is rottably mounted on the rotatable shaft with the journal disposed within the internal cavity of the housing. A journal-engaging member is mounted in the internal cavity for engaging the journal to establish a normal force between the journal-engaging member and the journal. An oil outlet and an oil inlet communicate with the internal cavity in the housing. The oil inlet and oil outlet are connected to a machine for circulating lubricating oil between the housing and the machine whereby the lubricating oil is directed between the journal and the journal-engaging member.