Name: China Bosch Rexroth A4VSO Suppliers - Yanhui Hydraulic
Brand: Yanhui
SKU: 312297007

Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of Bosch Rexroth A4VSO in China. We warmly welcome you to wholesale bulk Bosch Rexroth A4VSO 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 Bosch Rexroth A4VSO is a high-performance axial piston variable pump featuring a swashplate design, specifically engineered for open-circuit industrial hydraulic drives. Positioned as a flagship heavy-duty industrial pump within Bosch Rexroth's hydraulic portfolio, the A4VSO series delivers robust, precise, and highly reliable fluid power control under high operating pressures. Its main function is to transform mechanical energy from an electric motor or primary drive into controllable hydraulic flow and pressure, offering smooth speed control, accurate torque regulation, and fast system dynamic responses.

Key Advantages

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Heavy-Duty Swashplate Architecture: Proven design built to deliver high power density and extended service life under harsh continuous-duty industrial environments.
High Operating Pressure Capabilities: Supports continuous nominal pressure up to 350 bar and maximum peak pressure up to 400 bar.
Advanced Precision Control: Supports a comprehensive array of modular control devices, from hydraulic mechanical load-sensing and pressure limiting to fast electro-hydraulic proportional volume control.
Low Noise & Minimal Pressure Pulsation: Optimized valve plate geometry and piston dynamics minimize operational noise levels and micro-pulsations, extending system component life.
Through-Drive Capability: Standard through-drive shafts allow mounting of secondary auxiliary pumps (such as gear or smaller piston pumps) for multi-circuit system integration.

Technical Specifications

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Parameter	Unit	A4VSO 40	A4VSO 71	A4VSO 125	A4VSO 180	A4VSO 250	A4VSO 355	A4VSO 500	A4VSO 750	A4VSO 1000
Nominal Displacement	cm³/rev	40	71	125	180	250	355	500	750	1000
Nominal Pressure (p_nom)	bar	350	350	350	350	350	350	350	350	350
Maximum Pressure (p_max)	bar	400	400	400	400	400	400	400	400	400
Max. Drive Speed (at open suction)	rpm	3000	2500	2200	1900	1800	1500	1300	1200	1000
Max. Flow Rate (at max rpm)	L/min	120	177	275	342	450	532	650	900	1000
Max. Drive Power Output	kW	70	103	160	200	262	310	379	525	583
Approximate Weight (Dry)	kg	38	51	82	102	185	240	335	540	720
Fluid Temperature Range	°C	-25 to +90	-25 to +90	-25 to +90	-25 to +90	-25 to +90	-25 to +90	-25 to +90	-25 to +90	-25 to +90
Viscosity Range	mm²/s	10 to 1000	10 to 1000	10 to 1000	10 to 1000	10 to 1000	10 to 1000	10 to 1000	10 to 1000	10 to 1000
Fluid Cleanliness Class	ISO 4406	20/18/15	20/18/15	20/18/15	20/18/15	20/18/15	20/18/15	20/18/15	20/18/15	20/18/15

Applications

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Metal Forming Presses & Forging Machinery:

Function: Provides high-pressure main flow and precise tonnage control. Enables smooth speed deceleration during blank clamping and rapid stroke return cycles.

Plastic Injection Molding Machines:

Function: Executes closed-loop proportional flow and pressure regulation during injection, holding, and clamping phases to maintain plastic component tolerances.

Civil Engineering & Tunnel Boring Machines (TBM):

Function: Drives cutterhead systems and thrust cylinders, delivering variable torque matching soil resistance under continuous high-load conditions.

Marine Deck Machinery & Offshore Winches:

Function: Controls constant tension winches and dynamic position actuators, compensating for sea-wave motion through rapid displacement adjustments.

Steel Mill Machinery & Rolling Mills:

Function: Powers hydraulic roll gap actuators and heavy tilt tables, demanding reliable performance under extreme thermal and mechanical shock.

Related Models

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Model Series Code	Displacement (cm³/rev)	Control Type Description	Mounting Flange Type	Typical Shaft End	Through-Drive Option
A4VSO 40 DR / 30R-PPB13N00	40	Pressure Control (DR)	ISO 4-Bolt	Parallel Keyed	Without Through-Drive
A4VSO 71 DRG / 30R-PPB13N00	71	Remote Pressure Control (DRG)	ISO 4-Bolt	Splined Shaft	Without Through-Drive
A4VSO 125 DFR / 30R-VPB13N00	125	Load Sensing + Pressure Control	ISO 4-Bolt	Splined Shaft	With Flange Mount
A4VSO 180 LR2D / 30R-PPA13N00	180	Power Controller with Pressure Cutoff	ISO 4-Bolt	Parallel Keyed	Without Through-Drive
A4VSO 250 HD1 / 30R-VPB13N00	250	Hydraulic Control, Pilot Pressure Dependent	SAE / ISO 4-Bolt	Splined Shaft	Through-Drive Capable
A4VSO 355 HS3 / 30R-VPB13N00	355	Servo Control with Proportional Valve	ISO 4-Bolt	Splined Shaft	Through-Drive Capable
A4VSO 500 EO2 / 30R-VPA13N00	500	Electronic Proportional Control	ISO 4-Bolt	Parallel Keyed	Through-Drive Capable
A4VSO 750 DR / 30R-VPA13N00	750	Standard Pressure Control	Heavy-Duty Flange	Splined Shaft	Through-Drive Capable

FAQ

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Q1: What is the main difference between Rexroth A4VSO and Rexroth A10VSO pumps?

Answer: The primary differences lie in pressure ratings, duty cycle capability, and available displacement sizes:

A4VSO: Designed for heavy-duty industrial applications requiring high pressure (350 bar nominal, 400 bar peak) and larger displacements (up to 1000 cm³/rev). It uses a 9-piston swashplate design with heavy-duty bearings for continuous intensive work.
A10VSO: Designed for medium-pressure applications (typically 280 bar nominal, 350 bar peak) with displacement sizes usually up to 140 cm³/rev. It is lighter and intended for medium-duty machinery.

Q2: What hydraulic fluids can be used in the Rexroth A4VSO pump?

Answer: The A4VSO pump is compatible with mineral oil-based hydraulic fluids (HL and HLP types). It can also operate with environmentally acceptable hydraulic fluids (HEES, HETG, HEPG) and fire-resistant fluids (HFC, HFD), provided the seals, operating pressures, temperatures, and cleanliness standards are selected according to Bosch Rexroth fluid guidelines.