Balancer shaft, balancer shaft and bearing system and method for manufacturing a balancer shaft

摘要

Balancing shaft (1) for balancing mass forces and / or mass moments, in particular for balancing mass forces and / or mass moments of a reciprocating piston internal combustion engine, comprising: - an elongated base body (2); - at least one bearing area (10) formed on the base body (2) on the outer circumference of the balancer shaft (1), by means of which the balancer shaft (1) can be supported by a bearing (50) for rotating mounting about an axis of rotation (R); and- at least a first unbalance section (11), the center of gravity of which lies outside the axis of rotation (R) of the balance shaft (1); wherein to form the reduced contact surface of the bearing (50) on the bearing area (10) - the bearing area (10) in the longitudinal direction (LR) of the base body (2), as seen from an inside (IS) of the bearing (50), and - one in the transverse direction (QR) seen first curvature (K1) of the bearing area (10) is smaller than a second curvature (K2) of the inside (IS) of the bearing (50).