Metal Plain Bearings
Less Friction for More Dynamics
The performance and torque characteristics of advanced gasoline and diesel engines combined with the available installation space call for rod and crankshaft bearing shells with exceptional load-bearing capacity and low wear and friction. For connecting rod bushings, extremely low wall thicknesses, maximum load-bearing capacity and antiseize properties are demanded. Metal bushings and washers in transmissions must reveal high wear resistance, high seizure resistance as well as good adaptability.
In the realization of the prime development goal of pairing superior performance with lower emissions for all new vehicle engines, KS Gleitlager has shown itself to be the plain bearings specialist across the board. Resorting to a broad range of materials, it is able to offer the customer the best possible antifriction materials in each case.
Three different families of sliding materials are available. The first group consists of the classical aluminum-tin sliding material, recently also with Silicon for better wear behavior. From the strands continuously cast on site, strip is generated in defined and coordinated rolling and annealing operations for subsequent cladding. The various steel-aluminum composites are finally produced by roll bonding. These are used for the production of so-called bimetal bearings in internal combustion engines. Furthermore, these materials are also utilized for bushings and washers.
The second sliding material family comprises continously sintered bronze composites for so-called trimetal bearing shells for internal combustion engines.
Along with the already mentioned roll-bonded steel-aluminum and the sintered steel-bronze materials, bronze and brass continuously cast onto steel strip make up the third material family of KS Gleitlager. These materials are distinguished by their extreme dynamic load-bearing capacity coupled with sufficient tenacity, making them ideal for use in connecting rod bearing shells for high-performance diesel engines.
However, it is not only the sliding material and the geometry-generating processes that affect plain bearing function, innovative coatings also ensure optimal running-in behavior and low-wear continuous running. The spectrum of possible surface coatings at KS Gleitlager ranges from electroplated films deposited electrochemically and polymer low-friction coatings to sputter layers applied electrophysically in a high vacuum (PVD).