An arrangement to capture passively a broken saw chain of a chain saw with a guide bar that is arranged such that it can pivot, including a stationary screen that forms part of a sawing box and that covers a rear part of the saw. In order to achieve an inexpensive and efficient protection there is arranged between an end surface of the screen and the guide bar an energy-absorbing brake member that is sufficiently elastic or flexible to receive the kinetic energy from a broken saw chain, to direct kinetic energy away from the chain and to regain its normal form after it has suffered an impact from and been deformed by the chain.
