Undercarriages and undercarriage components supplied by BERCO, the world market leaders, display excellent wear properties, even under the toughest operating conditions. Such high level quality is achieved through all products being subject to modern heat treatment upon completion of manufacture to obtain optimum hardness. No less than 50 hardening plants and 40 furnaces are available in the Italian factories alone for this purpose.
Case hardening is the form of surface treatment employed by BERCO in special, computer controlled, high-temperature chambers at temperatures of over 950°C. An automatic hardening line for drive sprockets comprises an electric continuous furnace with a diameter of 10 m, two numerically controlled tempering machines for surface hardening and a tunnel furnace for stress-free annealing.
A fully automatic line for heat treating roller bodies supplements the BERCO technology. The bodies are heated in 70 meter long facility with a capacity of 3 t/h, austenised and then surface or through-hardened at the tempering stations. The computer controlled stress-free annealing process is completed in a finishing furnace.
The optimum hardness associated with the BERCO products has two major economic advantages for the manufacturers and operators of chain driven construction machines: longer service life of the components effectively reduces machine downtimes and hourly operation costs.