Name: China Rexroth A4VSO Series High Pressure Hydraulic Piston Pump Suppliers - Yanhui Hydraulic
Brand: Yanhui
SKU: 308470793

Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of rexroth a4vso series high pressure hydraulic piston pump in China. We warmly welcome you to wholesale bulk rexroth a4vso series high pressure hydraulic piston pump for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.

Product Overview

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The Rexroth A4VSO Series is a heavy-duty, variable displacement axial piston pump designed in a swashplate design for open-circuit hydraulic systems. Renowned for its exceptional durability, high operating pressure, and outstanding efficiency, it is the industry standard for demanding industrial and marine applications.

Key Advantages

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High Pressure Capability: Handles nominal pressures up to 350 bar and peak pressures up to 400 bar.

Excellent Acoustic Properties: Optimized flow paths and a rigid housing design result in exceptionally low noise levels during operation.

Long Service Life: Robust bearings and high-quality materials guarantee reliable performance under harsh working conditions.

Modular Control Options: Fully compatible with a wide array of modular controllers (including pressure, flow, power, and electro-hydraulic controls).

Through-Drive Capability: Designed to allow the mounting of additional pumps (same or different sizes) to configure multi-circuit systems.

Technical Specifications

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Parameter	Size 40	Size 71	Size 125	Size 180	Size 250	Size 355	Size 500
Displacement (Vg max, m³)	40	71	125	180	250	355	500
Max Speed (nmax, rpm)	2600	2200	2000	1800	1600	1500	1400
Max Flow (qv max, L/min)	104	156	250	324	400	532	700
Nominal Pressure (p nom)	350 bar	350 bar	350 bar	350 bar	350 bar	350 bar	350 bar
Maximum Pressure (p max)	400 bar	400 bar	400 bar	400 bar	400 bar	400 bar	400 bar
Max Power (P max, kW)	61	91	146	189	233	310	408
Weight (approx., kg)	37	51	79	101	144	194	291

Applications

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Application Sector	Specific Equipment / Machinery	Role of A4VSO Pump
Metallurgy & Steel	Blast furnace controls, rolling mills, forging presses	Delivers stable, high-pressure oil for heavy actuator movements
Marine & Offshore	Winches, steering gear, deck cranes, dredging machinery	Ensures corrosion resistance and reliability in high-humidity environments
Industrial Pressing	Hydraulic presses, injection molding machines	Provides high dynamic response and precise flow control during molding
Mining & Tunneling	Tunnel boring machines (TBM), heavy-duty excavators	Supplies high-pressure power to cut, lift, and move massive geological loads
Power Generation	Steam turbine governors, hydro-dam gate controls	Offers failsafe, precise control for crucial utility infrastructure

Related Models

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Model / Frame Size	Nominal Displacement (cm3/rev)	Max. Speed (rpm at absolute inlet pressure)	Max. Flow (L/min at 1500 rpm)
A4VSO 40	40	2700	60
A4VSO 71	71	2200	106.5
A4VSO 125	125	2100	187.5
A4VSO 180	180	1800	270
A4VSO 250	250	1500	375
A4VSO 355	355	1300	532.5
A4VSO 500	500	1200	750
A4VSO 750	750	1000	1125
A4VSO 1000	1000	950	1500

FAQ

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Q1: What is the difference between an open-circuit and a closed-circuit hydraulic pump?

A1: In an open-circuit system (like the one used by the A4VSO), fluid flows from the reservoir to the pump, through the control valves to the actuator, and then dumps directly back into the reservoir. In a closed-circuit system, the fluid returning from the actuator flows directly back into the pump inlet without returning to the main reservoir first.

Q2: What type of hydraulic fluid is recommended for the Rexroth A4VSO series?

A2: The A4VSO is designed to operate primarily with mineral-oil-based hydraulic fluids (HL, HLP) according to DIN 51524. Environmentally friendly or fire-resistant fluids (such as HFC or HFD) can also be used, but they may require a derating of maximum operating parameters or alternative seal packages.