Hydraulic fluid power. Positive displacement pumps and motors. Dimensions and identification code for mounting flanges and shaft ends. Part 2: Two- and four-hole flanges an shaft ends. Metric series
1 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.
NOTE — A series of circular and polygonal flanges, for products having geometry unsuitable for any of the above flanges, is included in ISO 3019/3.
2 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 extemal thread;
— cylindrical shaft end with metric involute spline.
NOTE — Additional shaft sizes required for circular and polygonal flanges are included in ISO 3019/3.
3 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.
4 This part of ISO 3019 provides
— a minimum number of flanges and shaft sizes to cover probable present and future requirements: short and long flange spigot options are included;
— dimensional interchangeability of flange and shaft end mountings;
— a facility for making certain flanges from castings designed originally for sizes specified in ISO 3019/1;
— flange and spigot dimensions which allow for recom-mended sealing arrangements when sealing is required between a flange and its mating housing (see annex B);
— identification codes for flanges and shaft ends — these codes can be used separately or in combination.