Closed Axial Piston Pump A4VG
- Variable Displacement Axial Piston Pump
- Closed Circuit Design
- High Pressure & High Efficiency
- Integrated Boost Pump Design
- Stable Performance & Fast Response
- Low Noise, Long Service Life
- OEM & ODM Customization Available
- Custom Control / Shaft / Mounting Options
- Suitable for Construction Machinery & Hydraulic Drive Systems
Precision-Engineered Closed Circuit Hydraulic Pump | Direct Factory Pricing | OEM/ODM Ready
When your hydrostatic transmission system demands consistent power density, precise speed control, and zero-leak performance under extreme duty cycles, the margin for error on component selection is zero. The Closed Axial Piston Pump A4VG from Olive Branch Hydraulics delivers Rexroth A4VG series interchangeable performance — manufactured under strict ISO-certified quality control at our Shijiazhuang facility with 10+ years of specialized hydraulic piston pump production expertise.
Built for procurement managers who need reliable supply, competitive unit cost, and flexible order terms without compromising on hydraulic performance specifications.
Key Features & Buyer Benefits
Engineering Performance
- Variable displacement pump design with stepless flow adjustment from zero to maximum output — enables precise machine speed control without auxiliary valving
- Closed circuit hydraulic pump architecture eliminates external leakage paths, reducing oil consumption by up to 15% versus open-loop alternatives
- Swashplate angle control via hydraulic servo, electric proportional, or manual override — matches your system integration requirements exactly
- High volumetric efficiency (≥95% at rated conditions) ensures maximum power transfer to your hydrostatic transmission pump circuit
Procurement Advantages
- Direct factory pricing — no trading company markup, 20–35% cost reduction versus European OEM equivalents
- Interchangeable with Rexroth A4VG series — drop-in replacement with matching port geometry, shaft dimensions, and control interfaces
- MOQ flexibility — sample orders accepted for qualification testing; volume pricing tiers from 10+ units
- Lead time — standard models ship within 15–20 working days; stocked configurations available for immediate dispatch
Reliability Assurance
- Each hydraulic piston pump undergoes 100% factory pressure testing at 110% rated pressure before shipment
- Cylinder block and valve plate matched-lapped to ≤0.002mm flatness tolerance
- Case drain flow monitored during run-in to verify internal leakage within specification
Technical Specifications
| Parameter | Specification Range |
|---|---|
| Displacement | 28 / 40 / 56 / 71 / 90 / 125 / 180 / 250 cc/rev |
| Rated Pressure | 350 bar (continuous) |
| Peak Pressure | 400 bar (intermittent) |
| Rated Speed | 2800 – 3600 rpm (size dependent) |
| Control Type | HD / HW / EP / DA (hydraulic, electric, manual) |
| Drive Shaft | Splined or keyed, SAE / DIN standard |
| Mounting Flange | SAE B / SAE C / SAE D (ISO 3019) |
| Port Configuration | SAE O-ring boss, metric, or BSP thread |
| Fluid Compatibility | Mineral oil HLP (HM), biodegradable HEES/HETG |
| Operating Temperature | -25°C to +90°C (fluid dependent) |
| Filtration Requirement | ISO 4406 Class 18/16/13 or better |
| Weight Range | 28 kg (A4VG28) – 185 kg (A4VG250) |
| Noise Level | ≤78 dB(A) at rated conditions |
OEM/ODM Capability & Customization Options
Olive Branch Hydraulics operates as a full-service closed axial piston pump manufacturer with white-label and custom engineering capacity.
| Service | Details |
|---|---|
| White-Label Packaging | Your brand, your labels, your documentation — we remain invisible to your end customer |
| Custom Shaft Configuration | Modified spline count, extended shaft, through-drive (tandem) arrangements |
| Control Valve Integration | Pre-mounted proportional valves, custom spool logic, integrated sensors |
| Port Adaptation | Non-standard port faces, custom manifold mounting patterns |
| Special Sealing | FKM/Viton, PTFE, low-temperature NBR for extreme environment applications |
| Color & Coating | Custom paint codes, corrosion-resistant surface treatments |
| Testing & Documentation | Full test reports per your spec, material certificates (MTR), CoC per shipment |
| Minimum Order | 1 pc for samples / prototypes; 10+ pcs for production pricing |
| Development Lead Time | Custom configurations: 25–35 working days from drawing approval |
Certifications & Quality System
- ISO 9001:2015 Quality Management System
- CE Declaration of Conformity available
- Full material traceability from billet to finished assembly
- Third-party inspection (SGS, TÜV, Bureau Veritas) accepted on request
Frequently Asked Questions
Q: What is Foreign Trade-Express?
A: Foreign Trade Express is a one-stop intelligent foreign trade network marketing SaaS system platform.
Q: Is this pump a direct replacement for the Rexroth A4VG series?
A: Yes. Our A4VG pumps match the original mounting dimensions, port connections, shaft splines, and control interfaces. They install into existing circuits without modification.
Q: What quality testing do you perform?
A: Every unit is tested on a hydraulic test bench for flow rate, volumetric efficiency, case drain leakage, and pressure holding at rated and peak conditions. Test data is available upon request.
Q: Can I get a sample before placing a bulk order?
A: Absolutely. We encourage sample evaluation. Standard-configuration samples typically ship within 10 days. A full test report accompanies each sample.
Q: What is the typical MOQ for wholesale pricing?
A: Standard models: 5 units. Custom-branded or modified-spec orders: 10–50 units depending on complexity. We offer tiered pricing — larger volumes unlock deeper discounts.
Q: Do you support after-sales technical issues?
A: Yes. Our engineering team provides installation guidance, troubleshooting support, and warranty service. Response time is within 24 hours on business days.
Q: What payment and trade terms do you offer?
A: T/T, L/C, and trade assurance options available. FOB Tianjin/Qingdao or CIF to your port — flexible Incoterms based on order size.
Get Your Quotation Within 24 Hours
Ready to reduce your hydraulic piston pump procurement cost without compromising on Rexroth A4VG series performance standards?
Send us your requirements:
- Model / displacement size needed
- Control type preference
- Annual estimated quantity
- Any custom specifications
Our engineering sales team responds to every inquiry within 24 hours with technical confirmation and competitive pricing.
Olive Branch Hydraulics — Shijiazhuang, China | 10+ Years Specialized in Closed Circuit Hydraulic Pump Manufacturing | Your Trusted OEM/ODM Partner for Axial Piston Pump Solutions
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