Safety and arming unit for a spinning projectile fuze

A safety and arming unit ( 10 ) for a spinning projectile fuze, which has a fuze body ( 12 ) and a bearing body ( 14 ), which define a spherical cavity ( 16 ) between them, in which a spherical rotor ( 18 ) is mounted such that it can rotate, in which rotor ( 18 ) a detonator ( 20 ) is provided. In order to make the safety and arming unit suitable for fuzes in weapon systems with extremely fast munition feed units, the rotor ( 18 ) can be surrounded by a rotor locking ring ( 28 ) in the safe position, prevents the rotor ( 18 ) from rotating through an acceleration ring ( 30 ) and a spring element ( 32 ) which connects the acceleration ring ( 30 ) to the rotor locking ring ( 28 ) in an interlocking manner, with the rotor locking ring ( 28 ) being formed with a slot ( 36 ) in order that it can be spread open by rotation and centrifugal forces into an open space ( 34 ).