A power tool , comprising: a housing ; a motor rotatable around a motor axis ; a ball sleeve sleeved on a motor shaft and driven by the motor shaft to move; an oscillating member driven by the ball sleeve to oscillate; and an output shaft driven by the oscillating member to rotate around an output shaft axis , wherein the oscillating member comprises a mounting portion sleeved on the output shaft ; wherein a first bearing assembly and a second bearing assembly are sleeved on the output shaft , wherein the first bearing assembly is located on an upper side of the mounting portion , and the second bearing assembly is located on a lower side of the mounting portion ; the oscillating member and the ball sleeve are engaged in an engagement region on the oscillating member , and a geometric center of the engagement region is defined as an engagement center ; a first plane bisects the first bearing assembly along a direction of the output shaft axis , and the first plane is perpendicular to the output shaft axis ; a second plane bisects the second bearing assembly along the direction of the output shaft axis , and the second plane is perpendicular to the output shaft axis ; and a height from the engagement center to the first plane is a first height (H1), a height from the engagement center to the second plane is a second height (H2), and a ratio H1/H2 of the first height (H1) to the second height (H2) is greater than or equal to 0.5 and less than or equal to 1.4; characterized in that a distance from the engagement center to the output shaft axis is a first radius (R1), wherein the first radius (R1) is less than or equal to 32 mm. a housing ; a motor rotatable around a motor axis ; a ball sleeve sleeved on a motor shaft and driven by the motor shaft to move; an oscillating member driven by the ball sleeve to oscillate; and an output shaft driven by the oscillating member to rotate around an output shaft axis , wherein the oscillating member comprises a mounting portion sleeved on the output shaft ; wherein a first bearing assembly and a second bearing assembly are sleeved on the output shaft , wherein the first bearing assembly is located on an upper side of the mounting portion , and the second bearing assembly is located on a lower side of the mounting portion ; the oscillating member and the ball sleeve are engaged in an engagement region on the oscillating member , and a geometric center of the engagement region is defined as an engagement center ; a first plane bisects the first bearing assembly along a direction of the output shaft axis , and the first plane is perpendicular to the output shaft axis ; a second plane bisects the second bearing assembly along the direction of the output shaft axis , and the second plane is perpendicular to the output shaft axis ; and a height from the engagement center to the first plane is a first height (H1), a height from the engagement center to the second plane is a second height (H2), and a ratio H1/H2 of the first height (H1) to the second height (H2) is greater than or equal to 0.5 and less than or equal to 1.4; characterized in that a distance from the engagement center to the output shaft axis is a first radius (R1), wherein the first radius (R1) is less than or equal to 32 mm. <EOS>