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. <EOS>