What is the difference between fixed and variable displacement pumps?

NOVEMBER 02, 2022

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Fixed and Variable Displacement Piston PumpsDec 4, 2017 — Muncie Power Products, Inc.'s line of piston pumps features both fixed and variable displacement options. The line includes four different 

Different Types of Hydraulic Pumps With Their ClassificationsDec 10, 2020 — Fixed displacement pumps make little noise, so they are perfect for use in for example theatres and opera houses. Variable displacement pumps, Hydraulic fixed-displacement pumps: ReviewFeb 22, 2016 — A fixed-displacement pump is a positive displacement type where the amount of displacement (gpm) cannot be varied, only by changing the drive 

BOSCH REXROTH A4VSG AXIAL PISTON VARIABLE PUMP
DdBh1NounSealsWeightUNSPSC
A4VG145EPM0P000/40CRND6T11F0000AD00-S - - - - - - 2.672 -
A4VG145EP2DP0T0/40MRND6T11FC2S7AD00- - - - - - - 0.023 -
A4VG145EPX/40+AZPG-22-042.016 Inch | 51.2 Mi1.25 Inch | 31.75 Mi1.813 Inch | 46.05 M - Bearing - 1.18331171511
A4VG145EP2DP0M0/40MLND6T11F0000AB00-S4.13 Inch | 104.9 Mi3.937 Inch | 100 Mil - - BearingTriple Lip Urethane15.89 -
A4VG145EPX0P000/40DRND6T11UB2S4AE00-3.346 Inch | 85 Mill1.772 Inch | 45 Mill1.496 Inch | 38 Mill - - - - -
A4VG145EP2DP000/40ARND6T31FD4T1AB00-Y1.575 Inch | 40 Mill - 0.689 Inch | 17.5 Mi - - - 0.131171531
A4VG145EPXCPR00/40CRND6T11F0000AD00- - - - - - - 183 -
A4VG145EP0DP0X0/40NRND6T11FD4T1BS00-S - - - - - - 1.298 -
A4VG145EP4DP0W0/40MLND6A11BC2T1AS00-S - 2.938 Inch | 74.625 - - BearingSingle Lip Contact8.82631171535
A4VG145EP4DP0W0/40MLND6A11BD4T1AS00-S - - - - - - 1.317 -
A4VG145EP2DP0T0/40MRND6T11FD4T1AF00- - - - - - - 0.162 -
A4VG145EP2DP0T1/40MLND6T11VB3S5AS00- - - - - - - 0.309 -
A4VG145EP0DP0X0/40NRND6T11FD4T1BS00-S - 1.378 Inch | 35 Mill - - Bearing - - 31171533
A4VG145HT1000T0/40MLND6T11VB3S5AS00- - - - - BearingTriple Lip Urethane - -
A4VG145HT1000T0/40MLND6T11FB3S5AS00-3.543 Inch | 89.9921.969 Inch | 50.013 - - Bearing - 1.243 -
A4VG180EP2D1/32L-NSD02F001F8.43 Inch | 214.122 - - - BearingTriple Lip Nitrile R152.5431171501
A4VG180EP2/32+A11VO130DRS/1 - 2.188 Inch | 55.575 - - - - 6.16931171533
A4VG180EZ2DMT1/32R-NZD02F01XPH-S - - - - - - 2.4 -
A4VG180EP2D2 32L-NZD02F001S0.628 Inch | 15.9510.502 Inch | 12.751 - - Bearing - - 31171515
A4VG180EP2/32+A11VO130DRS/1 - - - - - - 6.35631171511
A4VG180EP2D1-32L-NSD02F001F - - - - - - 210.118 -
A4VG180EP2DT1/32R-NZD02N001E-S1.102 Inch | 28 Mill0.472 Inch | 12 Mill - - Bearing - 0.02931171504
A4VG180EP4D1/32R-NSD02F691SP - 3.188 Inch | 80.9753.75 Inch | 95.25 Mi - Bearing - 17.712 -
A4VG180EP4D1/32R-NTD02F691LP-S - 0.19 Inch | 4.826 Mi - - Bearing - - -
A4VG180EP4D1/32R-NTD02F691LP-S - - - - - - 0.005 -
A4VG180EP2D1-32R-NSD02K071EH-S - 0.984 Inch | 25 Mill0.709 Inch | 18 Mill - Bearing - - 31171531
A4VG180HD1-31R-PSD02XXX1S-SV - - - - - - - -
A4VG180DA2D2-31R-PZD02F711D19.25 Inch | 488.9513.625 Inch | 346.07 - - Bearing - 115.96 -
AA4VG180EP2D1/31L-NSD52K011E-S - - - - - - 0.554 -
A4VG180EP4/32+A11VO130DRS/10+A10VO28D - - - - - - 3.742 -
AA4VG180EP2DT1-32R-NTD52F071FH-S11.417 Inch | 290 Mi6.299 Inch | 160 Mil - - - - 29.8 -
A4VG180EP2/32+A11VO130DRS/10+A10VO28D6.25 Inch | 158.75 M4.528 Inch | 115 Mil - - - Double Lip Viton28.60231171501
A4VG180EP4D1/32R-NZD02F721SP-S - 1.438 Inch | 36.525 - - Bearing - 1.49831171533
AA4VG180EP2DT1/32R-NTD52F071FH-ES - - - - Bearing - 0.57 -
A4VG180EP4D1/32L-NZD02F691DH-S - 6 mm9 mm30 mm - - - 31171508
A4VG180HD9M1/32R-NSD02F021S-S - - - - - - 0.658 -
A4VG180HD9M1/32R-NSD02F021S-S - - - - - - 0.024 -
A4VG180HD3DMT1/32R-NZD02K021E - - - - - - 3.658 -
A4VG180EP4D1/32R-NZD02F691BP0.688 Inch | 17.4750.313 Inch | 7.95 Mi - - Bearing - 0.0231171515
AA4VG180EP4DT1/32R-NTD52F071FH-S9.449 Inch | 240 Mil6.299 Inch | 160 Mil2.362 Inch | 60 Mill - Bearing - - -
A4VG180 EP4DT1/32R-NZD02F071DH-S - - - - Bearing - - 31171530
A4VG180DA2D2/32L-NSD02F691LH1.125 Inch | 28.5750.5 Inch | 12.7 Mill - - Bearing - 0.02731171504
A4VG180HD9/32R+A10VO28DR/31R+AZPF-11-S4.724 Inch | 120 Mil - - - Bearing - - 31171504
A4VG180EZ1/31+A4VG180EP1/318.43 Inch | 214.1226.5 Inch | 165.1 Mil7.5 Inch | 190.5 Mil - - - - 31171511
A4VG180HD9MT1/32R-NSD02F021S-S - 9 Inch | 228.6 Milli - - Bearing - 48.79 -
A4VG180EP2D1/31R-PZD02F011F1.22 Inch | 31 Milli - 1.313 Inch | 33.35 M - BearingContact Seal0.3531171511
A4VG180EZ1D1/31R-NZD02F711D-S - - 2.5 Inch | 63.5 Mill - - Single Lip Contact3.284 -
A4VG180EP2DM1-32R-NZD02N003EH-S - - - - - - 2.10 Kg -
A4VG180EP1D1/31R-NFD02F021D-S - - - - - - 1.135 -
A4VG180HWD1/32R-NSD02F021S - - - - - - 0.372 -
A4VG180 EP4D1/32R-NZD02K721EP - - - - - - - -
A4VG180EP4D1/32R-NZD02F741SH - - - - - - 1.125 -
A4VG180EP2DMT1/32R-NZD02F001PH-S - - - - - - - -
A4VG180EP2D1/32L-NZD02F021SX-S - - - - - - - 31171531
A4VG180EP2D1/32L-NZD02F021S-S - - - - - - 81.266 -
A4VG180EP2D1/32R-NSD02F691SP - - - - - - 0.005 -
A4VG180HD1/32+A10VO28DR/31-SK - 1.969 Inch | 50 Mill - - - - - -
A4VG180EP4D1/32L-NZD02F02XSX-S - - - - - - 300 -
A4VG180EP4D1/32R-NZD02F711DH-S - - - - - - - -
A4VG180EP2DT1/32L-NZD02F001S2.56 Inch | 65.024 M2.362 Inch | 60 Mill - - BearingLabyrinth5.44831171535
A4VG180EP2DM1/32L-NZD02F003SH-S3.543 Inch | 90 Mill1.575 Inch | 40 Mill1.437 Inch | 36.5 Mi - Bearing - 0.9831171531
A4VG180HDD1/32R-NSD02F073F *Z* - - - - - - 1.588 -
A4VG180EP2DM1/32L-NZD02F003S-S - - - - - - 0.059 -
A4VG180EP2D1/32R-NZD02F721SH-S - - - - - - 0.005 -
A7VTO200LRCH5-61L-PZB01 - - - - - - - -
A4VD250EL20R1O2O1A3.23 Inch | 82.042 M - - - BearingTriple Lip Urethane13.6231171501
AA4FO250/10X-PZB25N - - - - - - 18.541 -
A5VG40DG1-DG1-11R3 - 3.5 Inch | 88.9 Mill3.75 Inch | 95.25 Mi - - Double Lip Viton - 31171511
V-PUMPEAA7VTO160DR/60L-PZD1*G* - - - - - - 0.813 -
A7FO80/63R-VZB013.151 Inch | 80.035 - - - Bearing - - 31171547
A4CSG500EPG-30R-VZH85F994N - - - - - - 0.0431171508
A7FO107-60L-PPB11 - - - - - - - -
A4VSG180HD1DT-30R-PPB10K029N1.75 Inch | 44.45 Mi0.75 Inch | 19.05 Mi - - Bearing - 0.13631171504
A7VTO200LRDS-61R-PZB01-S - - - - - - - -
A7VTO160LRD-61.024 Inch | 26 Mill0.669 Inch | 17 Mill - - Bearing - 0.011 -
A4VSG180MA-30R-PPB10L609N - - - - - - 264.005 -
A4VSG250EO2/30R+A4VSG250EO2/30R2.875 Inch | 73.02 M - - - Bearing - 4.994 -
A4VSG125+HD-*UNGUEL***069F - - - - - - 0.205 -
A41CTZ145-107HT100/10ALXXXX00HAE00-S0 Inch | 0 Millimete6 Inch | 152.4 Milli - - Cone - 8.50231171527
A5VG40EZ21-HD1-11R2 - - - - - - 1.74 -
A4VSG125EO1K-30R-PPB10H029F2.032 Inch | 51.6131.875 Inch | 47.625 - - - B Seal - 31171501
PA4VSG250MA/22R-PPB10H029F - - - - - Floating Labyrinth - 31171511
A7FO55-63R-NZB01 - - - - Bearing - 0.0331171504
A4FO40-31 - 0.375 Inch | 9.525 M - - - - 0.0531171508
A4FO28/31R-PSC02K01 - - - - - - 244.65 -
A41CTU145-107EPA0T/10MLQ1V9XXSAE00-S - - - - - - - -
A4VSG125HD1-30R-PPB10K240N - - - - - - 71.8 -
A41CTZ110-090EPA0T/10MLZ9Z900SAE00-S3.15 Inch | 80 Milli1.575 Inch | 40 Mill - - Bearing - - 31171516
A4VG180EP0MT1/32R-NZD02F721SP-S - - - - - - 3.485 -
A4VG180EP0MT1/32R-NSD02F021SP-S2.032 Inch | 51.6131.938 Inch | 49.225 - - - - 0.82 -
A4VG180 EP4DM1/32R-NZD02F001MH-S3.543 Inch | 90 Mill2.165 Inch | 55 Mill0.709 Inch | 18 Mill - Bearing - 0.37331171531
A4VG180HDDT1-32R-NZD02F023S - - - - - - 1.52 -
A4VG180EP2D1-32R-NTD02F691LH-S - - - - - - 4 -
A4VG180EP2D1-32R-NTD02F691LH-S + A116.535 Inch | 420 Mi7.874 Inch | 200 Mil - - - - 91.531171510
AA4VG180EP2DT1-32L-NSD52F071DX-S - - - - - - 352 -
A4VG180EP4DT1/32R-NZD02N001EH-S1.394 Inch | 35.4 Mi0.938 Inch | 23.825 - - Bearing - - -
AA4VG180HD1DM1-32L-NSD52F021D0.906 Inch | 23 Mill0.375 Inch | 9.525 M - - - - - 31171504
A4VG180EP4/32+A11VO130DRS/1 - 0.984 Inch | 25 Mill - - Bearing - 0.089 -
A4VG180EZ2DMT1/32R-NZD02F01XP-S7.874 Inch | 200 Mil4.331 Inch | 110 Mil - - Bearing - - -
A4VG180EP4D1/32L-NSD02F001SP - - - - - - - -
A4VG180EP4/32+A11VO130DRS/1 - - - - - - 0.318 -
A4VG180EZ2DMT1/32R-NZD02F02XP-S - - - - - - 18.2 -
A4VG180EP4/32+A11VO130DRS/13.25 Inch | 82.55 Mi2.559 Inch | 65 Mill - - Bearing - 11.3531171501
A4VG180EZ2DMT1/32R-NZD02F01XP-S2.441 Inch | 62 Mill0.984 Inch | 25 Mill - - Bearing - - 31171516
A4VG180EP2D2-32R-NZD02F001S - 1.5 Inch | 38.1 Mill - - BearingDouble Lip Contact - 31171501

What is the difference between variable and fixed - QuoraNov 5, 2016 — A fixed displacement pump always has the same displacement and always pumps the same amount at the same speed. A variable displacement pump has an adjustable 

Engineering Essentials: Fundamentals of Hydraulic PumpsPositive-displacement pumps can be of either fixed or variable displacement. The output of a fixed displacement pump remains constant during each pumping Variable vs. Fixed Displacement Hydraulic PumpsAug 20, 2019 — In a displacement pump, the amount of flow depends on the number of rotating pistons. By controlling the pistons' stroke, you adjust the pump's 

Benefits of a Fixed-Displacement Hydraulic PumpUnlike fixed-displacement pumps, variable displacement pumps are able to increase or decrease the fluid flow rates electronically, manually, or hydraulically.Fixed & Variable Displacement Pumps - LunchBox SessionsExplain basic gear pumping functions; List common causes of gear pump wear; Differentiate between fixed and variable displacement; Compare the different designs 

Understanding Variable Displacement Pumps - WHYPSMay 4, 2019 — The non-positive hydraulic pumps produce continuous flow and the positive displacement pump produces an approximate constant flow at fixed speed What is the difference between fixed and variable pumps?May 9, 2019 — A variable displacement pump has a method of increasing or reducing displacement either manually, hydraulically or electronically. The method of