Home> Technical Articles> Why a gear pump Cannot be used as a variable displacement pump?
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What is the difference between fixed and variable pumps?May 9, 2019 — Variable displacement axial piston pumps use a swashplate to guide the pistons as they reciprocate while rotating about the shaft's axis.
Introduction to Hydraulic Pumps | LunchBox SessionsGear pumps are strictly fixed displacement, and piston pumps are commonly variable displacement. But as you can see, it just so happens that vane pumps can come Types of Hydraulic Pumps - Muncie Power ProductsJun 29, 2018 — Gear pumps are fixed displacement, also called positive displacement, pumps. This means the same volume of flow is produced with each rotation
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HPR130-01/2550002554 | 60 mm | 35 mm | 10 mm | 40 mm | 51.8 mm | 0.6 mm | - | 1.5 mm |
HPR130-01/2550002553 | 36 mm | 20 mm | 8 mm | 22.9 mm | 30.8 mm | 0.6 mm | - | 1.5 mm |
HPR130-01/2550002552 | 295 mm | 160 mm | 35 mm | 218 mm | 238 mm | - | 2 mm | 6 mm |
HPR130-01/2550002551 | 210 mm | 90 mm | 25 mm | 139 mm | 157 mm | - | 1.5 mm | 3 mm |
HPR130-01/255000255 | 100 mm | 70 mm | 13 mm | 77 mm | 92 mm | 0.6 mm | - | 2 mm |
HPR130-01/2550002571 | 130 mm | 90 mm | 16 mm | 104 mm | 120 mm | 1 mm | - | 2.5 mm |
HPR130-01/255000257 | 70 mm | 45 mm | 10 mm | 50 mm | 61.8 mm | 0.6 mm | - | 1.5 mm |
HPR130-01/2550002569 | 70 mm | 20 mm | 12 mm | 35 mm | 47 mm | - | 0.6 mm | 3 mm |
HPR130-01/2550002568 | 180 mm | 120 mm | 25 mm | 138 mm | 158 mm | 1.5 mm | - | 2.5 mm |
HPR130-01/2550002567 | 100 mm | 70 mm | 13 mm | 77 mm | 92 mm | 0.6 mm | - | 2 mm |
HPR130-01/2550002565 | 160 mm | 110 mm | 20 mm | 126 mm | 143 mm | 1 mm | - | 2.5 mm |
HPR130-01/2550002564 | 65 mm | 40 mm | 10 mm | 45 mm | 56.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/25500026 | 150 mm | 100 mm | 20 mm | 117 mm | 132 mm | 1 mm | - | 2.5 mm |
HPR135-02/2550000001 | 260 mm | 200 mm | 25 mm | 218 mm | 238 mm | 2 mm | - | 2.5 mm |
HPR130-01/25600025 | 90 mm | 60 mm | 13 mm | 67 mm | 82 mm | 0.6 mm | - | 2 mm |
HPR130-01/2550002669 | 140 mm | 90 mm | 20 mm | 104 mm | 120 mm | 1 mm | - | 2.5 mm |
HPR130-01/2550002667 | 41 mm | 25 mm | 8 mm | 27.9 mm | 35.8 mm | 0.6 mm | - | 1.5 mm |
HPR130-01/2550002578 | 210 mm | 150 mm | 25 mm | 168 mm | 188 mm | 1.5 mm | - | 2.5 mm |
HPR130-01/2550002574 | 180 mm | 120 mm | 25 mm | 138 mm | 158 mm | 1.5 mm | - | 2.5 mm |
HPR135-02/2550002607 | 240 mm | 190 mm | 25 mm | 203 mm | 223 mm | 1 mm | - | 2.5 mm |
HPR135-02/2550002606 | 280 mm | 200 mm | 30 mm | 231 mm | 248 mm | 2 mm | - | 3 mm |
HPR135-02/2550002605 | 200 mm | 140 mm | 25 mm | 161 mm | 178 mm | 1.5 mm | - | 2.5 mm |
HPR135-02/2550002604 | 395 mm | 300 mm | 35 mm | 337 mm | 359 mm | 2.5 mm | - | 3 mm |
HPR135-02/2550002603 | 65 mm | 40 mm | 10 mm | 45 mm | 56.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/2550002602 | 240 mm | 190 mm | 25 mm | 203 mm | 223 mm | 1 mm | - | 2.5 mm |
HPR135-02/2550002601 | 120 mm | 80 mm | 16 mm | 92 mm | 109 mm | 0.6 mm | - | 2.5 mm |
HPR135-02/2550002614 | 140 mm | 100 mm | 16 mm | 112 mm | 129 mm | 1 mm | - | 2.5 mm |
HPR135-02/2550002613 | 180 mm | 120 mm | 25 mm | 138 mm | 158 mm | 1.5 mm | - | 2.5 mm |
HPR135-02/2550002612 | 165 mm | 80 mm | 22 mm | 117 mm | 132 mm | - | 1 mm | 3 mm |
HPR135-02/2550002611 | 200 mm | 140 mm | 25 mm | 161 mm | 178 mm | 1.5 mm | - | 2.5 mm |
HPR135-02/255000261 | 140 mm | 100 mm | 16 mm | 112 mm | 129 mm | 1 mm | - | 2.5 mm |
HPR135-02/2550002609 | 55 mm | 30 mm | 10 mm | 35 mm | 46.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/2550002608 | 60 mm | 35 mm | 10 mm | 40 mm | 51.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/2550002622 | 120 mm | 55 mm | 15 mm | 77 mm | 92 mm | - | 0.6 mm | 3 mm |
HPR135-02/2550002621 | 330 mm | 250 mm | 30 mm | 280 mm | 299 mm | 2 mm | - | 3 mm |
HPR135-02/255000262 | 240 mm | 115 mm | 28 mm | 168 mm | 188 mm | - | 1.5 mm | 3 mm |
HPR135-02/2550002619 | 220 mm | 160 mm | 25 mm | 181 mm | 198 mm | 1.5 mm | - | 2.5 mm |
HPR135-02/2550002618 | 300 mm | 240 mm | 25 mm | 257 mm | 279 mm | 2 mm | - | 2.5 mm |
HPR135-02/2550002616 | 36 mm | 20 mm | 8 mm | 22.9 mm | 30.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/2550002615 | 280 mm | 220 mm | 25 mm | 237 mm | 259 mm | 2 mm | - | 2.5 mm |
HPR135-02/2550002633 | 70 mm | 45 mm | 10 mm | 50 mm | 61.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/2550002629 | 55 mm | 30 mm | 10 mm | 35 mm | 46.8 mm | 0.6 mm | - | 1.5 mm |
HPR135-02/2550002626 | 295 mm | 160 mm | 35 mm | 218 mm | 238 mm | - | 2 mm | 6 mm |
HPR135-02/2550002625 | 180 mm | 120 mm | 25 mm | 138 mm | 158 mm | 1.5 mm | - | 2.5 mm |
HPR135-02/2550002624 | 300 mm | 240 mm | 25 mm | 257 mm | 279 mm | 2 mm | - | 2.5 mm |
HPR135-02/2550002623 | 240 mm | 190 mm | 25 mm | 203 mm | 223 mm | 1.5 mm | - | 2.5 mm |
HPR160-01/2560002552 | 380 mm | 210 mm | 40 mm | 277 mm | 299 mm | - | 2.5 mm | 6 mm |
HPR160-01/256000255 | 210 mm | 150 mm | 25 mm | 168 mm | 188 mm | 1.5 mm | - | 2.5 mm |
HPR160-01/2550002556 | 240 mm | 115 mm | 28 mm | 168 mm | 188 mm | - | 1.5 mm | 3 mm |
HPR135-02/2550002674 | 120 mm | 80 mm | 16 mm | 92 mm | 109 mm | 0.6 mm | - | 2.5 mm |
HPR135-02/2550002672 | 150 mm | 100 mm | 20 mm | 117 mm | 132 mm | 1 mm | - | 2.5 mm |
HPR135-02/2550002671 | 165 mm | 80 mm | 22 mm | 117 mm | 132 mm | - | 1 mm | 3 mm |
HPR135-02/2550002641 | 220 mm | 170 mm | 20 mm | 183 mm | 203 mm | 1.5 mm | - | 2.5 mm |
HPR160-01/2560002562 | 240 mm | 115 mm | 28 mm | 168 mm | 188 mm | - | 1.5 mm | 3 mm |
HPR160-01/2560002561 | 210 mm | 150 mm | 25 mm | 168 mm | 188 mm | 1.5 mm | - | 2.5 mm |
Useful information on Gear Pumps - Michael Smith EngineersA gear pump is a type of positive displacement (PD) pump. External gear pumps can also be used in hydraulic power applications, typically in vehicles,
Understanding Variable Displacement Pumps - WHYPSMay 4, 2019 — Construction, mining, agriculture, oil and gas industry and many other industries use the applications of variable displacement pump.The Basics Of Variable Displacement Pump Controls - CrossCoIf you are operating a vane or gear pump, in most cases the controls are fairly simple. The pump is either loaded (doing work) or unloaded (all flow going
Variable displacement pump - WikipediaA variable displacement pump is a device that converts mechanical energy to hydraulic (fluid) energy. The displacement, or amount of fluid pumped per Engineering Essentials: Fundamentals of Hydraulic PumpsJan 1, 2012 — Most pumps used in hydraulic systems are positive-displacement. A gear pump produces flow by carrying fluid in between the teeth of two
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 Piston Pumps vs. Hydraulic Gear PumpsAug 3, 2020 — Gear pumps use gears or cogs to transfer fluids. The cogs are tightly aligned to create suction as they draw liquid in and discharge it. The
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