How does an axial piston variable pump work?

NOVEMBER 02, 2022

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Axial piston pump - WikipediaAn axial piston pump is a positive displacement pump that has a number of pistons in a circular array within a cylinder block.

All About Axial Piston Pumps - What They Are and How They Axial piston pumps can be designed as variable displacement piston pumps, making them very useful for controlling the speeds of hydraulic motors and Piston Pump - an overview | ScienceDirect TopicsIn axial piston pumps, the cylinder block and drive shaft are on the same centerline and the pistons reciprocate parallel to the drive shaft. The simplest type

BOSCH REXROTH A4V VARIABLE PUMPS
	D	d	B	da	Da	Radius	Chamfer	Oil Holes
A11VO95DR-10L-NSD12N	480 mm	400 mm	35 mm	426 mm	447 mm	2.5 mm	-	3 mm
A11VO190LR/11L-NPD12N00-S	140 mm	90 mm	20 mm	104 mm	120 mm	1 mm	-	2.5 mm
A11VO60EP2D/10R-NZC12K02H	260 mm	200 mm	25 mm	218 mm	238 mm	2 mm	-	2.5 mm
A11VO200DR/10R-NPD12N00 G	150 mm	120 mm	16 mm	126 mm	143 mm	1 mm	-	2.5 mm
A11VO145EP6Z/11R-NSD12K17H-S	210 mm	150 mm	25 mm	168 mm	188 mm	1.5 mm	-	2.5 mm
A11VO40DRS/10R-NZC12N	220 mm	170 mm	20 mm	183 mm	203 mm	1.5 mm	-	2.5 mm
A11VO145LRDH1/11R-NSD12K52	160 mm	110 mm	20 mm	126 mm	143 mm	1 mm	-	2.5 mm
AA11VO145LG2S+AA4VG40DWD1	100 mm	70 mm	13 mm	77 mm	92 mm	0.6 mm	-	2 mm
A11VO190LRDH2-11R-NSD12K07	240 mm	180 mm	25 mm	198 mm	218 mm	1.5 mm	-	2.5 mm
A11VO130LRDH1/10L-NZD12N	36 mm	20 mm	8 mm	22.9 mm	30.8 mm	0.6 mm	-	1.5 mm
A11VO190LR3DH1/11R-NZD12N00-S	220 mm	160 mm	25 mm	181 mm	198 mm	1.5 mm	-	2.5 mm
A11VO95LRDS/10R-NSD12K04	240 mm	115 mm	28 mm	168 mm	188 mm	-	1.5 mm	3 mm
A11VO40DR/10L-NZC12N	150 mm	100 mm	20 mm	117 mm	132 mm	1 mm	-	2.5 mm
A11VO130LR-10R-NZD12K83V	240 mm	190 mm	25 mm	203 mm	223 mm	1.5 mm	-	2.5 mm
A11VO95LG1DS-10L-NZD12N00V	70 mm	45 mm	10 mm	50 mm	61.8 mm	0.6 mm	-	1.5 mm
A11VO60LRDC+A11VO60LRDC	260 mm	200 mm	25 mm	218 mm	238 mm	2 mm	-	2.5 mm
A11VO260LRU2-11R-NPD12N00V-S	260 mm	200 mm	25 mm	218 mm	238 mm	2 mm	-	2.5 mm
A11VO40DR/10L-NZC12K01	90 mm	60 mm	13 mm	67 mm	82 mm	0.6 mm	-	2 mm
A11VO260LR-11R-NPD12N	280 mm	200 mm	30 mm	231 mm	248 mm	2 mm	-	3 mm
A11VO60LRDS/10R-NZC12N	180 mm	120 mm	25 mm	138 mm	158 mm	1.5 mm	-	2.5 mm
A11VO260EP2G+A11VO260EP2G	240 mm	115 mm	28 mm	168 mm	188 mm	-	1.5 mm	3 mm
A11VO190 DRS+A11VO190 DRGX	130 mm	90 mm	16 mm	104 mm	120 mm	1 mm	-	2.5 mm
A11VO95DRS-10R-NSD12N	70 mm	20 mm	12 mm	35 mm	47 mm	-	0.6 mm	3 mm
A11VO130DRS/10R-NPD12N	190 mm	130 mm	25 mm	148 mm	168 mm	1.5 mm	-	2.5 mm
A11VO190EP2Z/11R-NSD12K17H-S	150 mm	100 mm	20 mm	117 mm	132 mm	1 mm	-	2.5 mm
A11VO130LR3DH1/10R-NZD12N	70 mm	45 mm	10 mm	50 mm	61.8 mm	0.6 mm	-	1.5 mm
AA11VO145LG2S/11R-NZGXXK80-S	330 mm	250 mm	30 mm	280 mm	299 mm	2 mm	-	3 mm
A11VO40EP1D/10R-NSC12N00H	150 mm	100 mm	20 mm	117 mm	132 mm	1 mm	-	2.5 mm
A11VO95LRDH1 10L-NZD12N	295 mm	160 mm	35 mm	218 mm	238 mm	-	2 mm	6 mm
A11VO75LRDC+A11VO75LRDC+A10VG45NVM1	140 mm	100 mm	16 mm	112 mm	129 mm	1 mm	-	2.5 mm
A11VO40LRS-10R-NSC12N	380 mm	210 mm	40 mm	277 mm	299 mm	-	2.5 mm	6 mm
A11VO40LRDH1-10R-NZC12K02	55 mm	30 mm	10 mm	35 mm	46.8 mm	0.6 mm	-	1.5 mm
A11VO95LR3-10R-NZD12N	70 mm	45 mm	10 mm	50 mm	61.8 mm	0.6 mm	-	1.5 mm
A11VO190LRDU2 11R-NPD12N00VH-S	355 mm	250 mm	40 mm	289 mm	311 mm	2 mm	-	4 mm
A11VO95LRS/10L+A10VO45DFR1/31L	90 mm	60 mm	13 mm	67 mm	82 mm	0.6 mm	-	2 mm
A11VO130LR3DH1-10R-NZD12N	80 mm	50 mm	13 mm	57.2 mm	72 mm	0.6 mm	-	2 mm
A11VO130DRS-10R-NZD12K02	180 mm	120 mm	25 mm	138 mm	158 mm	1.5 mm	-	2.5 mm
A11VO95LRS/10R-NPD12N	36 mm	20 mm	8 mm	22.9 mm	30.8 mm	0.6 mm	-	1.5 mm
A11VO75LE2S/10R-NZD12N00T	230 mm	150 mm	30 mm	181 mm	198 mm	1.5 mm	-	3 mm
A11VO95LRDS/10R-NZD12K02	120 mm	55 mm	15 mm	77 mm	92 mm	-	0.6 mm	3 mm
A11VO190LR-11L-NPD12N	140 mm	90 mm	20 mm	104 mm	120 mm	1 mm	-	2.5 mm
A11VO95LG2S-10R-NZG12K8	150 mm	120 mm	16 mm	126 mm	143 mm	1 mm	-	2.5 mm
A11VO130LG1-10L-NZD12N00-S	210 mm	90 mm	25 mm	139 mm	157 mm	-	1.5 mm	3 mm
A11VO60LRDS/10L-NSC12N	150 mm	100 mm	20 mm	117 mm	132 mm	1 mm	-	2.5 mm
AA11VO95DRS/10L-NSD62K07	395 mm	300 mm	35 mm	337 mm	359 mm	2.5 mm	-	3 mm
A11VO40DRS/10R-NSC12K01	280 mm	220 mm	25 mm	237 mm	259 mm	2 mm	-	2.5 mm
A11VO75DRS/10R-NPD12K01	65 mm	40 mm	10 mm	45 mm	56.8 mm	0.6 mm	-	1.5 mm
A11VO75LE1X/10R-NZD12K07P-S	100 mm	70 mm	13 mm	77 mm	92 mm	0.6 mm	-	2 mm
A11VO190LRDS+A11VO190LRDS	480 mm	400 mm	35 mm	426 mm	447 mm	2.5 mm	-	3 mm
A11VO210EP2S/11R-NSD12K17H-S	130 mm	90 mm	16 mm	104 mm	120 mm	1 mm	-	2.5 mm
A11VO95LRDS/10R+A11VO95LRDS/10R	65 mm	40 mm	10 mm	45 mm	56.8 mm	0.6 mm	-	1.5 mm
A11VO95LR3DS/10R-NZD12N00R	295 mm	200 mm	35 mm	238 mm	258 mm	2 mm	-	3 mm
A11VO190LRDS-11+A11VO190LRDS-11-K	220 mm	160 mm	25 mm	181 mm	198 mm	1.5 mm	-	2.5 mm
A11VO130LRCS+A10VO45DFLR	95 mm	35 mm	15 mm	57 mm	73 mm	-	0.6 mm	3 mm
A11VO60DRS/10R-NPC12N	310 mm	250 mm	25 mm	267 mm	289 mm	2 mm	-	2.5 mm
A11VO75LRDC/10R-NZD12K04	165 mm	80 mm	22 mm	117 mm	132 mm	-	1 mm	3 mm
A11VO75LRDU2/10R-NZD12K07	220 mm	170 mm	20 mm	183 mm	203 mm	1.5 mm	-	2.5 mm

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.

How Does a Hydraulic Piston Pump Work? - Panagon SystemsJul 28, 2020 — An axial pump uses a propeller to push fluid along the axis in a spiral motion. These unique pumps are common in aerospace and marine Axial Piston Pump Design - Online Hydraulic Training CoursesJun 13, 2022 — In variable displacement pumps the swash plate, or angle of the bent axis is changed. As the angle reduces the stroke of the piston reduces and

The Basics Of Variable Displacement Pump Controls - CrossCoThe amount of flow that each pump can provide is dependent on a rotating group of pistons. By varying the stroke of the pistons, we adjust the displacement of Engineering Essentials: Fundamentals of Hydraulic PumpsThe fluid delivered by a screw pump does not rotate, but moves linearly. The rotors work like endless pistons, which continuously move forward.

Variable-displacement Pump Control Basics | Engineering360Sep 19, 2016 — Here, a heavy spring and piston are used to operate the swash plate. System pressure flows against one side of an internal piston, which is held Operating principle of the variable displacement axial piston 2. In total, n p pumping pistons are nested in the barrel, and they can slide on the swash plate surface. When the bar- rel is driven (