以油研柱塞泵A45-F-R-04-B-K-A-3266为例，介绍各符号所代表的意思
A45---系列号
45---排量
F--- 法兰安装
R--- 顺时针旋转
04---电-液比例负载敏感控制型
H ---压力调节范围1—21
K ---轴伸形式为平键                                                                                                                                               A----接口位置                                                                                                                                                        32 ---设计号

A45-F-R-04-B-K-A-3266、A45-F-R-04-C-K-A-3266
A45-F-R-04-H-K-A-3266、A45-F-R-04-B-K-3266、A45-F-R-04-C-K-3266
A45-F-R-04-H-K-3266