A seatbelt retractor comprising: a spindle for retracting a seatbelt; an electric actuator which generates power for rotating the spindle; and a power transmission mechanism which is capable of transmitting power from the electric actuator to the spindle, the power transmission mechanism including a clutch housing which rotates together with the spindle and includes a portion to be engaged, a pawl which includes a first engaging portion that is capable of engaging with the portion to be engaged of the clutch housing, a gear wheel which includes a holding portion for holding the pawl so as to be movable, is disposed so as to oppose the clutch housing, and rotates in accordance with the rotation of the electric actuator, an outer gear cover which houses the clutch housing and the gear wheel, and a friction ring which engages with the pawl while allowing relative movement of the pawl in a radial direction and is held on the outer gear cover due to frictional force, wherein a clutch mechanism, which switches between a mode in which power from the electric actuator can be transmitted to the spindle and a mode in which the transmission of power from the electric actuator to the spindle can be interrupted, by engagement/disengagement between the portion to be engaged of the clutch housing and the first engaging portion of the pawl, and the friction ring is provided with another engaging portion which engages with a second engaging portion of the pawl so as to allow relative movement of the pawl in the radial direction, characterized by a plurality of contact pieces which come into contact with an outer peripheral surface of a cylindrical portion formed on the outer gear cover and press against the outer peripheral surface towards the inner side in the radial direction. a spindle for retracting a seatbelt; an electric actuator which generates power for rotating the spindle; and a power transmission mechanism which is capable of transmitting power from the electric actuator to the spindle, the power transmission mechanism including a clutch housing which rotates together with the spindle and includes a portion to be engaged, a pawl which includes a first engaging portion that is capable of engaging with the portion to be engaged of the clutch housing, a gear wheel which includes a holding portion for holding the pawl so as to be movable, is disposed so as to oppose the clutch housing, and rotates in accordance with the rotation of the electric actuator, an outer gear cover which houses the clutch housing and the gear wheel, and a friction ring which engages with the pawl while allowing relative movement of the pawl in a radial direction and is held on the outer gear cover due to frictional force, wherein a clutch mechanism, which switches between a mode in which power from the electric actuator can be transmitted to the spindle and a mode in which the transmission of power from the electric actuator to the spindle can be interrupted, by engagement/disengagement between the portion to be engaged of the clutch housing and the first engaging portion of the pawl, and the friction ring is provided with another engaging portion which engages with a second engaging portion of the pawl so as to allow relative movement of the pawl in the radial direction, characterized by a plurality of contact pieces which come into contact with an outer peripheral surface of a cylindrical portion formed on the outer gear cover and press against the outer peripheral surface towards the inner side in the radial direction.