The Kaiser KA connection consists of a cylindrical male pilot and female receptacle. The connection is made by means of a radial locking screw with a 15 degree taper. The screw engages in the respective offset pocket of the male pilot with a cam action.
The locking screw force creates a 3.3 to 3.5 times larger axial force which rigidly clamps the faces of the two components together. This face to face clamping builds up a friction force between the two components. Additionally the thrust of the screw locks and pushes the male pilot securely into line contact against the opposite wall of the female connection.
The torsional cutting forces are primarily transmitted by the friction between the faces. Any remaining torque results in additional wedge action between the locking screw and the male member, which is transformed into a very strong additional axial clamping force.
The Kaiser KAB connection is derived from the KA connection without loss of all technical and dimensional features or interchangeability and ease of maintenance.
The KAB connection is equipped with a floating drive pin which engages on both sides into respective pockets in the mating part. The tapers on the pins and the angles on the pockets are engineered to permit an automatic balancing of the two resulting torsional forces.
The drive pin is retained with a simple spring ring. Adaption to the KA connection is made by pushing the drive pin out of the male pilot.