A lock for locking of cabinets, vaults and different machines, which lock has a lock frame, which comprises a bolt, and in connection with the lock frame has been arranged a lock cylinder, which lock frame additionally comprises a power transmission mechanism between the lock cylinder and the bolt, characterized in that a front part of the lock cylinder comprises a drilling protection and a rear part of the lock cylinder comprises a latch, and the power transmission mechanism comprises a transmission lever and said latch, which transmission lever is connected to the latch in a rotating manner at a first point of the transmission lever and connected to the bolt in a rotating manner at a second point of the transmission lever, which transmission lever additionally comprises a retaining protrusion, and the bolt comprises a locking pin and the lock frame comprises a hole for the locking pin, which locking pin is spring-loaded out of the bolt, towards the hole in the locking position of the bolt, and which retaining protrusion is arranged to be against the locking pin in the normal use of the lock, preventing an end of the locking pin from moving into the hole, both the connection of the lock cylinder to the lock frame and the connection of the transmission lever to the bolt is arranged to allow movement of the lock cylinder and the power transmission mechanism in the direction of the longitudinal axis of the lock cylinder, which lock additionally comprises a spring, which is arranged to keep the lock cylinder and power transmission mechanism in place in the direction of the longitudinal axis of the lock cylinder in normal use of the lock and to allow movement in the direction of the longitudinal axis due to an external hit or drilling of the lock cylinder, whereby the movement in the direction of the longitudinal axis moves the retaining protrusion away from the locking pin, whereby the end of the locking pin moves into the hole in the locking position of the bolt. and the power transmission mechanism comprises a transmission lever and said latch, which transmission lever is connected to the latch in a rotating manner at a first point of the transmission lever and connected to the bolt in a rotating manner at a second point of the transmission lever, which transmission lever additionally comprises a retaining protrusion, and the bolt comprises a locking pin and the lock frame comprises a hole for the locking pin, which locking pin is spring-loaded out of the bolt, towards the hole in the locking position of the bolt, and which retaining protrusion is arranged to be against the locking pin in the normal use of the lock, preventing an end of the locking pin from moving into the hole, both the connection of the lock cylinder to the lock frame and the connection of the transmission lever to the bolt is arranged to allow movement of the lock cylinder and the power transmission mechanism in the direction of the longitudinal axis of the lock cylinder, which lock additionally comprises a spring, which is arranged to keep the lock cylinder and power transmission mechanism in place in the direction of the longitudinal axis of the lock cylinder in normal use of the lock and to allow movement in the direction of the longitudinal axis due to an external hit or drilling of the lock cylinder, whereby the movement in the direction of the longitudinal axis moves the retaining protrusion away from the locking pin, whereby the end of the locking pin moves into the hole in the locking position of the bolt.