A portable power tool with a housing, a motor having a motor output
member, a driven member and a transmission. The transmission, which is
located in the housing, is configured to receive a rotary input from the
motor output member and to produce a rotary output that is transmitted to
the output spindle. The transmission has a plurality of planetary
transmission stages, each of which including a ring gear, a planet
carrier and a plurality of planet gears that are supported by the planet
carrier for meshing engagement with the ring gear. The transmission
further includes at least one member that may be configured in a first
condition, which renders at least one of the planetary transmission
stages operable in an active mode, and a second condition, which renders
at least one of the planetary transmission stages operable in an inactive
mode. The transmission is operable in at least three overall speed
reduction ratios.