德国力士乐齿轮泵工作时，主动轮随电动机一起旋转并带动从动轮跟着旋转。当吸入室一侧的啮合齿逐渐分开时，吸入室容积增大，压力降低，便将吸人管中的液体吸入泵内；吸入液体分两路在齿槽内被齿轮推送到排出室。液体进入排出室后，由于两个齿轮的轮齿不断啮合，使液体受挤压而从排出室进入排出管中。主动齿轮和从动齿轮不停地旋转，泵就能连续不断地吸入和排出液体。
力士乐REXROTH恒位移摆线泵PGZ
R901230020 PGZ4-1X/020RA07VE4
R901384154 PGZ4-1X/020RA07VE4-C3.1
R901253320 PGZ4-1X/020RA07VU2-A485
R901230023 PGZ4-1X/020RR07VB3
R901230022 PGZ4-1X/020RT07VB2
R901230021 PGZ4-1X/020RT07VU2
R901230024 PGZ4-1X/032RA07VE4
R901388516 PGZ4-1X/032RA07VE4-C3.1
R901370661 PGZ4-1X/032RA07VU2-A485
R901230026 PGZ4-1X/032RT07VB2
R901230025 PGZ4-1X/032RT07VU2
R901230028 PGZ4-1X/040RA07VE4
R901252670 PGZ4-1X/040RA07VU2-A485
R901230031 PGZ4-1X/040RR07VB3
R901230030 PGZ4-1X/040RT07VB2
R901230029 PGZ4-1X/040RT07VU2
R901230032 PGZ4-1X/050RA07VE4
R901424383 PGZ4-1X/050RA07VE4-C3.1
R901370663 PGZ4-1X/050RA07VU2-A485
R901230035 PGZ4-1X/050RR07VB3
R901230034 PGZ4-1X/050RT07VB2
R901230033 PGZ4-1X/050RT07VU2
R901230036 PGZ4-1X/063RA07VE4
R901448430 PGZ4-1X/063RA07VE4-C3.1
R901300848 PGZ4-1X/063RA07VU2-A485
R901230039 PGZ4-1X/063RR07VB3
R901230038 PGZ4-1X/063RT07VB2
R901230037 PGZ4-1X/063RT07VU2
R901230040 PGZ4-1X/080RA07VE4
R901448257 PGZ4-1X/080RA07VE4-C3.1
