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Hydraulic Axial Piston Pump: Open-Loop Control 350 Bar for Die-Casting Machines

Brand Name:	SY Hydraulic
Model Number:	SY-A4VSO
MOQ:	1pc
Price:	USD 1000-5000 / pc
Payment Terms:	T/T
Supply Ability:	1000 pcs per month

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

China Classification Society Certification

Model NO.:

A4VSO 40/71/125/180/250/300/355/370/500

Structure:

Axial Plunger Pump

Drive Mode:

Hydraulic Driven Reciprocating Pump

Power:

Hydraulic

Packaging Details:

Standard Export Wooden Case

Supply Ability:

1000 pcs per month

Highlight:

hydraulic axial piston pump for die-casting

open-loop control hydraulic pump 350 bar

high-pressure axial piston pump with warranty

Product Description

Hydraulic Axial Piston Pump: Open-Loop Control 350 Bar for Die-Casting Machines

Features:

1. Suitable for hydraulic oil media, ensuring compatibility and performance.

2. Equipped with high‑precision position feedback devices

3. Designed with through-shaft structure, achieving rated pressure up to 35MPa.

4. Automatic venting port design

5. Adjustable swashplate angle allows flexible flow regulation.

6. Wear‑ and aging‑resistant seal rings

7. Rugged and durable high-pressure pump suitable for industrial applications.

8. Compatible with common industrial control protocols

9. Specifications range from 40 to 500, meeting various requirements.

10. Energy‑saving soft‑start functionality

Technical data:

Size				40	71	125	180	200	250	355	500
Displacement		V_{g max}	mL/r	40	71	125	180	200	250	355	500
Max. Speed	V_g= V_{g max}	n_nom	r/min	2600	2200	1800	1800	1800	1500	1500	1320
Max. Speed	V_g≤V_{g max}	n_max	r/min	3200	2700	2200	2100	2100	1800	1700	1600
Flow	at n_nom and V_{g max}	q_v	L/min	104	156	225	324	360	375	533	660
	at n_nom and V_{g max}	q_v	L/min	104	156	225	324	360	375	533	660
	n = 1500 r/min		L/min	60	107	186	270	420	375	533	581
Power Δp=350 bar	n=n_nom	P	kW	61	91	131	189	245	219	311	385
	n=n_nom	P	kW	61	91	131	189	245	219	311	385
	n = 1500 r/min	P	kW	35	62	109	158	210	219	311	339
Torque V_g= V_{g max}	Δp=350 bar	M_max	Nm	223	395	696	1002	1114	1391	1976	2783
	Δp=350 bar	M_max	Nm	223	395	696	1002	1114	1391	1976	2783
	Δp=100 bar	M	Nm	64	113	199	286	318	398	564	795
Inertia moment of the driveshaft		J_TW	kgm2	0.0049	0.0121	0.03	0.055	0.055	0.0959	0.19	0.3325
Volume of case		V	L	2	2.5	5	4	4	10	8	14
Weight		m	kg	39	53	88	102	102	184	207	320
Permissibleload of the drive shaft	Max.axial force	± F_{ax max}	N	600	800	1000	1400	1400	1800	2000	2000
Permissibleload of the drive shaft	Max.radial force	F_{q max}	N	1000	1200	1600	2000	2000	2000	2200	2500

Specifications:

Warranty	1 Year
Model	SY-A4VSO
Place of Origin	China
Type	Hydraulic axial piston pump
Color	Available any color
HS Code	8413503190
Application	Mining Machinery
Feature	High Quality
Delivery Time	15 Days after Payment
MOQ	1 Piece

Applications:

1. In onshore wind turbine pitch control systems, the A4VSO piston pump delivers variable flow to blade servo cylinders, enabling precise pitch angle adjustments to maximize power output across variable wind speeds. Its load-sensing control rapidly responds to gusts, maintaining smooth turbine operation and reducing structural fatigue. The pump’s high-pressure capabilities and low-leakage design improve system reliability and minimize maintenance downtime. Integrating this axial piston pump into advanced turbine control architectures enhances overall farm efficiency and supports grid stability by enabling more responsive renewable energy generation.

2. In offshore wind turbine nacelles, the A4VSO axial piston pump, equipped with corrosion‑resistant coatings and high‑temperature seals, powers pitch control actuators in salt‑laden, high‑humidity conditions. Its electro‑hydraulic proportional interface interfaces with SCADA platforms for remote monitoring and parameter adjustment. This hydraulic pump’s robust design withstands harsh marine climates, reducing unscheduled maintenance visits. By integrating this piston pump into next‑generation wind turbines, operators benefit from more reliable blade control, extended component life, and enhanced predictive maintenance capabilities.

3. In aircraft landing gear hydraulic test rigs, the A4VSO piston pump supplies stable oil pressure to actuators simulating ground loading and touchdown impact forces. Its high mechanical efficiency and fast dynamic response yield precise test data for fatigue and static load evaluations. This hydraulic pump’s low-leakage performance enhances measurement accuracy, supporting aerospace OEMs in validating landing gear designs against stringent FAA and EASA certification standards. Integrating this axial piston pump into ground support equipment ensures reliable, repeatable testing for critical aircraft safety systems.

Hydraulic Axial Piston Pump: Open-Loop Control 350 Bar for Die-Casting Machines 0

Competitive Advantage:

1. The A4VSO hydraulic pump is certified to multiple international standards—including CE marking for European compliance, UL and CSA certifications for North American safety, and API qualifications for petroleum sector applications—ensuring seamless market entry and regulatory adherence across the globe. OEMs and end users in industries ranging from oil & gas to food & beverage processing can deploy the pump without encountering additional certification barriers. The broad regulatory acceptance underlines the pump’s robust design and commitment to safety, facilitating higher confidence among project engineers and procurement teams when specifying power units for critical infrastructure and industrial projects.

2. Incorporating internal exhaust silencing and specialized low‑noise chamber separation techniques, the A4VSO piston pump maintains noise emissions within stringent factory and workplace thresholds, even under high flow and high‑pressure conditions. These acoustic design features reduce airborne and structure‑borne noise, creating a more ergonomic environment for operators and complying with Occupational Safety and Health Administration (OSHA) and European Noise at Work regulations. Applications in enclosed or noise‑sensitive areas—such as textile mills, pharmaceutical clean rooms, and urban construction sites—benefit from quieter hydraulic operation without sacrificing performance or efficiency.

3. The A4VSO axial piston pump features multi‑stage internal filtration and dedicated oil‑circuit isolation to capture and divert contaminants away from critical tolerances, reducing wear on valve spools and cylinder blocks. By effectively managing particulate ingress—even in harsh environments like metalworking, foundry operations, and recycling plants—the pump extends service intervals and lowers overall maintenance expenses. Plant operators gain improved uptime and reduced risk of catastrophic failure due to contamination‑induced damage, making the hydraulic pump an invaluable asset in mission‑critical production lines requiring high fluid cleanliness.

The Analysis For Rexroth A4VSO Piston Pump Common Breakdown:

1. High‑pressure fitting torque incorrect: Improper torque during assembly of high‑pressure hose fittings—either under‑torqued or over‑torqued—can result in intermittent leaks or damage to fitting threads and sealing faces. Under‑tightening causes oil seepage, while over‑tightening may crack the hose fitting body or strip threads, leading to catastrophic failure. Use a calibrated torque wrench and adhere to SAE or ISO torque specifications for each fitting type to ensure proper preload and maintain secure sealing on the hydraulic pump’s discharge connections.

2. Blocked reservoir breather causing suction issues: If the reservoir breather at the oil tank top becomes clogged with dust or sludge, the tank cannot equalize pressure with the atmosphere, resulting in negative pressure. This vacuum condition hampers the pump’s suction capability and may induce cavitation by drawing in air. Operators should routinely clean the breather filter or install an external filtered breather to maintain unobstructed air exchange between the reservoir and ambient environment, thereby preserving reliable hydraulic supply to the axial piston pump.

3. Difficulty starting with high‑viscosity oil: In cold environments or when using high‑viscosity hydraulic fluids, failure to engage the low‑viscosity start mode or pre‑heating measures can significantly increase starting torque requirements. This may overload the starter motor and cause the pump barrel to bind. Early indicators include abnormally high startup current draw and sharp whining noise. Implement electric oil heating or limit startup viscosity to ISO VG 150 or below, then transition to normal operating viscosity once the pump reaches temperature, ensuring reliable cold‑start performance of the hydraulic pump.

Tags:

Rexroth Piston Pump

Rexroth Piston Motor

Rexroth Axial Piston Pump

Rexroth Axial Piston Motor