scope:

This part of ISO 3019 specifies dimensions and establishes an identification code for mounting flanges of positive displacement rotary hydraulic fluid power pumps and motors of the following types: - two-hole oval flanges; - four-hole square flanges; - four-hole rectangular flanges. This part of ISO 3019 also specifies dimensions and establishes an identification code for shaft ends of positive displacement rotary hydraulic fluid power pumps and motors of the following types: - cylindrical shaft end with key; - conical shaft end with key and external thread; - cylindrical shaft end with metric involute spline. This part of ISO 3019 establishes a metric series of mounting flanges and shaft ends for positive displacement rotary hydraulic fluid power pumps and motors. The preferred series shall be used for all future pump and motor designs. The non-preferred series in annex A and the inch-based series in ISO 3019-1 should be avoided whenever possible.