A gear-driven spinning scroll device is provided. The scroll device comprises a housing defining a working fluid volume and a lubrication chamber defining a lubrication volume. The working fluid volume and the lubrication volume are separated from one another. The device also comprises a first scroll rotatably supported by one of a set of second drive gears and a second scroll rotatably supported by another one of the set of second drive gears. The set of second drive gears are disposed in the lubrication volume. The device also comprises a motor and a drive shaft connected to the motor. The drive shaft is supported by a set of first drive gears disposed in the lubrication volume and is configured to transmit torque from the motor to each of the first scroll and the second scroll via the set of first drive gears and the set of second drive gears.

A co-rotating scroll compressor includes a driving-side scroll member that is rotationally driven by a driving unit and includes a spiral driving-side wall disposed on a driving-side end plate, and a driven-side scroll member (90) that includes a driven-side wall corresponding to the driving-side wall. The driven-side wall is disposed on a driven-side end plate (90a) and engages with the driving-side wall to form a compression chamber. A first support member (33) is provided to a front end of a first driven-side wall (91b) in an axis direction. The first support member (33) is connected to the front end by a positioning pin (40) positioning a phase around a rotation axis, and rotates together with the first driven-side wall (91b). The positioning pin (40) is pressed into the first support member (33) and is fitted into the first driven-side wall (91b) in a non-pressed-in state.