液压式液压柱塞泵靠气压供油的液压油箱，在每次启动机器后，必须等液压油箱达到使用气压后，才能操作机械。直轴斜盘式柱塞泵分为压力供油型的自吸油型两种。压力供油型液压泵大都采用有气压的油箱，也有液压泵本身带有补油分泵向液压泵进油口提供压力油的。自吸油型液压泵的自吸油能力很强，无需外力供油。9510390085AZ-P-NFF-11-020/019/019-RDC12MB-S00149510390086AZ-P-N-12-020-RPR12MA9510390087AZ-P-N-12-022-RPR12MA9510390088AZ-P-N-12-025-RPR12MA9510390089AZ-P-N-12-028-RPR12MA9510390090AZ-P-N-12-032-RPR12MA9510390091AZ-P-N-12-036-RPR12MA9510390092AZ-P-N-12-020-LPR12MA9510390093AZ-P-N-12-022-LPR12MA9510390094AZ-P-N-12-025-LPR12MA9510390095AZ-P-N-12-028-LPR12MA9510390096AZ-P-N-12-032-LPR12MA9510390097AZ-P-N-12-036-LPR12MA9510390098AZ-P-N-12-020-RPC12MA9510390099AZ-P-N-12-022-RPC12MA9510390100AZ-P-N-12-025-RPC12MA9510390101AZ-P-N-12-028-RPC12MA9510390102AZ-P-N-12-032-RPC12MA9510390103AZ-P-N-12-036-RPC12MA)