Power tool and two-speed gear assembly for a power tool

A power tool comprising:

• a housing;
• an input shaft;
• an output shaft;
• and
• a two-speed power transmission, said two-speed power transmission comprising a planetary gear and a two-speed gear shift assembly for directing torque through said planetary gear in a high torque/low speed drive mode or past said planetary gear in a low torque/high speed drive mode,
• wherein said gear shift assembly comprises:
• a driving member drivingly connected to said input shaft;
• a driven member drivingly connected to said output shaft;
• an axially movable coupling sleeve arranged in a first position to intercouple said driving member and said driven member and in a second position to intercouple said planetary gear and said driven member;
• a linear actuator arranged to displace said coupling sleeve between said first and second positions, wherein said linear actuator comprises a linearly movable push bar arranged to for displacing said coupling sleeve between said first and second positions;
• and
• a coupling assembly arranged between said coupling sleeve and said linear actuator, wherein said coupling assembly comprises a first element rotationally coupled to said sleeve, wherein a rotation of said first element is independent of a rotation of said push bar and wherein said push bar is arranged to push said first element in an axial direction, and wherein said coupling sleeve is concentrically arranged with respect to said planetary gear and wherein said push bar is adapted to engage said first element in a position lying in a center of said sleeve.