Rexroth A7VKG series axial piston variable pump A7VKG012 A7VKG028 A7VKG055 A7VKG107 hydraulic pumps
Rexroth A7VKG series axial piston variable pump A7VKG012 A7VKG028 A7VKG055 A7VKG107 hydraulic pumps
- Product Details
Rexroth A7VKG series axial piston variable pump A7VKG012 A7VKG028 A7VKG055 A7VKG107 hydraulic pumps for CLAAS LEXION combines
Rexroth A7VKG Axial Variable Pump — engineered for ultra-high-pressure mobile and industrial hydraulics
The Rexroth A7VKG axial variable hydraulic pump (English keyword: Rexroth A7VKG axial variable pump) family is designed for applications that require compact packaging, very high working pressure and stable displacement control. Models such as A7VKG012 pump, A7VKG028 pump, A7VKG055 pump and A7VKG107 pump deliver reliable hydraulic power across a focused speed band of 1500–1800 rpm and elevated system pressures of 400–450 bar. BAOLILAI manufactures OEM-compatible replacements and supplies full technical A7VKG PDF — see www.baolilai-pump.com and request datasheets at www.baolilai-pump.com/contact_us/.
Key technical table (copyable)
| Model | Nominal displacement (cc/rev) | Rated speed (rpm) | Rated pressure (bar) | Warranty |
|---|---|---|---|---|
| A7VKG012 | 12 | 1500–1800 | 400–450 | 1 year |
| A7VKG028 | 28 | 1500–1800 | 400–450 | 1 year |
| A7VKG055 | 55 | 1500–1800 | 400–450 | 1 year |
| A7VKG107 | 107 | 1500–1800 | 400–450 | 1 year |
Design focus and performance advantages
The A7VKG series uses a robust bent-axis axial-piston architecture with hardened rotating groups and precision pistons to minimize internal leakage at extreme pressures. Key attributes include:
- High volumetric efficiency at 400–450 bar for sustained heavy-load duty.
- Reinforced housings and oversized bearings to resist pressure spikes and shock loads.
- Options for explosion-resistant housings and specialty seals for offshore, mining or hazardous-area installations.
- Compact flange and shaft variants for integration into gearboxes and limited-space engine bays.
Typical machine integrations (diverse OEM examples)
The A7VKG pumps are ideal where compact high-pressure pumps are needed:
- Agricultural: high-pressure implement and steering circuits on large tractors (example OEMs: John Deere www.deere.com, Kubota www.kubota.com).
- Construction: primary and auxiliary pumps for large excavators and asphalt pavers (example OEMs: Caterpillar www.cat.com, JCB www.jcb.com).
- Mining & drilling: high-pressure hydraulic drives for drills, shuttle conveyors and rock breakers (example OEMs: Komatsu www.komatsu.com, Epiroc www.epiroc.com).
- Material handling & marine: winches, cranes and offshore winches requiring explosion-proof options (example OEMs: Liebherr www.liebherr.com, Konecranes www.konecranes.com).
Each equipment example uses different pump sizing: A7VKG012/A7VKG028 suit auxiliary or implement circuits; A7VKG055 fits medium main-pump duties; A7VKG107 covers high-flow primary pump requirements.
System engineering guidance
- Sizing — calculate required rpm: rpm ≈ (system flow L/min × 1000) ÷ displacement (cc/rev). Include margin for volumetric efficiency.
- Filtration — maintain hydraulic cleanliness to OEM ISO targets (βx values per manufacturer); coarse contamination accelerates piston wear at 400+ bar.
- Cooling — at high pressures, monitor oil temperature and fit adequate coolers; maintain viscosity within specified range.
- Transient protection — use accumulators, pilot reliefs and dampers to protect the rotating group from spikes.
- Installation — ensure precise shaft alignment and torque limits to avoid bearing overload.
FAQ
Q1: What applications require A7VKG at 450 bar?
A1: Heavy-duty mining drills, high-pressure hydraulic rock breakers and some offshore winch systems demand 400–450 bar continuous service.
Q2: Are explosion-proof variants available?
A2: Yes — BAOLILAI supplies explosion-resistant housings, special seal kits and coatings for hazardous or corrosive environments.
Q3: How to choose between A7VKG055 and A7VKG107?
A3: Base choice on required flow at target engine speed; use the displacement table and rpm formula to match actuator speed and torque.
Q4: Where can I download PDFs and performance curves?
A4: Request complete technical files at www.baolilai-pump.com/contact_us/ or browse product pages at www.baolilai-pump.com.
The Rexroth A7VKG axial variable pump series provides an optimized solution when extreme pressure capability, compact installation and long service life are essential. BAOLILAI supports custom options and one-year warranty coverage to ensure OEM-grade reliability in the most demanding machine environments.
| Order Number | Internal Number |
| R902078665 | A7VKG28MA/63R-XPB02-S |
| R902101361 | A7VKG28MA/63R-XPB02-S |
| R902149462 | A7VKG028MA/10MRSL4P550-0 |
| R902149476 | A7VKG028MA/10MRSL4P55A-0 |
| R902186179 | A7VKG12MA/10MRSK4P35A-027412.0001 |
| R902194076 | A7VKG012MA/10MRSK4P350-0 27412.0001 |
| R902194078 | A7VKG028MA/10MRSL4P550-0 27416.0026 |
| R902196653 | A7VKG012MA/10MRSK4P350-0 27412.0001 |
| R902196681 | A7VKG028MA/10MRSL4P550-0 27416.0026 |
| R902200240 | A7VKG055MA/10MRSMSP650000-0 |
| R902203778 | A7VKG107MA/10MRSPSP950000-0 274.25.00.01 |
| R902186180 | A7VKG012MA/10MLSK4P350-0 |
| R902124344 | A7VKG012MA/10MRSK4P350-0 |
| R902243312 | A7VKG012MA/10MRSKGP35A250-0 |
| R902186182 | A7VKG028MA/10MLSL4P550-0 |
| R902191571 | A7VKG028MA/10MRSL4P550-0 |
| R902205894 | A7VKG028MA/10MRSLGP55A250-0 |
| R902248055 | A7VKG055MA/10MLSMSP650000-0 |
| R902206541 | A7VKG055MA/10MRSMSP650000-0 |
| R902248207 | A7VKG107MA/10MLSPSP950000-0 |
| R902206536 | A7VKG107MA/10MRSPSP950000-0 |
