The lapped bearing ring halves K 42611 are precision-finished bearing components designed for the camshaft lapped-bearing arrangement of the Adriadiesel/Jugoturbina/Zgoda/Sulzer ZV40/48 engine. Their carefully finished mating and bearing surfaces are intended to provide accurate contact, alignment, and support for the camshaft while maintaining the controlled running conditions required within the bearing assembly. The lapping process produces closely matched surfaces with a high degree of dimensional and surface accuracy, helping achieve uniform contact and dependable load distribution when the bearing halves are correctly assembled. During engine operation, these components must accommodate continuous camshaft rotation, cyclic bearing loads, vibration, and long-term service while preserving the required geometry and running clearance. Correct pairing and installation of the bearing ring halves, suitable lubrication, and careful inspection are therefore particularly important; wear, scoring, fretting, deformation, or damage to the precision-finished surfaces can adversely affect bearing performance and camshaft alignment. By providing accurately matched support within the camshaft bearing assembly, the K 42611 lapped bearing ring halves contribute to smooth camshaft rotation, controlled bearing loads, reduced wear, precise timing, and dependable long-term operation of the ZV40/48 engine.