The camshaft is a core component of the engine’s valve train; its dimensional accuracy directly affects the timing, lift, and duration of valve operation, thereby determining the engine’s power output, fuel economy, and emissions performance. Therefore, inspecting the geometric errors of the journal is of critical importance, as precise control of these errors can prevent abnormal wear or oil film breakdown.
Camshaft
Contour Measuring Instrument：
Arc, chamfer measurement.
