Bohang Advantage: For the A11VLO, the stability of the impeller (charge pump) is critical. Bohang uses high-precision balancing technology and imported materials to ensure the pump remains stable at high self-priming speeds, making it the most reliable "drop-in" replacement for mining and construction machinery.
1. Short Response Times: Rapid stroke adjustment ensures dynamic system performance.
2. Low Noise Emission: Advanced housing design reduces decibel levels in industrial environments.
3. Through-Drive Capability: Easily mount additional pumps to a single drive shaft.
FAQ
Q: What is the main difference between the A11VO and A11VLO models?
A: The "L" in A11VLO stands for Impeller (Charge Pump). The A11VLO is equipped with an internal centrifugal pump on the drive shaft, which pre-fills the piston chambers. This allows the pump to operate at significantly higher self-priming speeds and is ideal for engine-driven mobile machinery where high RPMs are common. The A11VO (without impeller) is typically used in applications with lower suction speeds or flooded suction tanks.
Q: Can your A11VO replacement handle the high-pressure peaks of mining excavators?
A: Yes. Our A11V(L)O series is engineered for heavy-duty cycles. It has a nominal pressure of 350 bar and a maximum peak pressure of 400 bar. We use reinforced swashplate bearings and high-strength alloy cylinders to ensure stability under the rapid pressure fluctuations typical in mining and demolition.
Q: Is the controller (LR, DR, HD) interchangeable with the original Rexroth unit?
A: Absolutely. Our controllers (such as the LR3 Power Controller or DR Pressure Controller) are calibrated to the same functional curves as the OEM. You can swap a single controller or the entire pump without recalibrating your machine's electronic management system.
Q: Does the A11VLO series support through-drive for tandem pump configurations?
A: Yes. We offer multiple Through-Drive (Hub) options (SAE A through E). This allows you to mount a secondary piston pump or a gear pump (for pilot oil) directly to the rear of the A11VLO, saving space and simplifying your drive train.
Q: How do I ensure the suction conditions are correct for an A11VLO pump?
A: For the A11VLO, the impeller significantly improves suction, but we still recommend a minimum inlet pressure to prevent cavitation. Our technical team provides a specific NPSH (Net Positive Suction Head) chart for each displacement size to help you optimize your tank and piping design.
Q: Are the seal kits for your A11VO pumps compatible with specialized hydraulic fluids?
A: Our standard pumps use premium NBR/FKM (Viton) seals suitable for mineral oils. If you are using fire-resistant fluids (HFC/HFD) or biodegradable oils, please notify us. We can equip the pump with a specialized seal package to ensure chemical compatibility and prevent leakage.
Our Strategic Advantages
1. Decades of Specialized Expertise (Since 2008)
The Message: We aren't just a manufacturer; we are hydraulic pioneers. With nearly 20 years of dedicated focus on the Rexroth technical system, Foshan Bohang understands every internal tolerance and metallurgical requirement of axial piston units.
2. Premium Imported Raw Materials
The Message: Quality begins with the source. To match Rexroth’s durability, we exclusively use high-grade imported raw materials. From specialized alloy steels for cylinders and pistons to premium NBR/FKM (Viton) seal kits, our material selection ensures our products thrive in extreme high-pressure and high-temperature environments.
3. Standardized "Rexroth-Level" Manufacturing Process
The Message: We don't take shortcuts. Our production lines follow the exact standard operating procedures (SOP) and processing times as Rexroth. Each component undergoes precise heat treatment, nitrogenation, and grinding to ensure that our replacement units are 100% interchangeable and functionally identical to the original.
4. 100% Engineer-Verified Performance Testing
The Message: "Zero-Defect" is our goal. Before leaving the factory, every single unit is personally tested by our senior engineers on high-precision digital test benches. We verify volumetric efficiency, mechanical noise, and leakage rates under full load to guarantee "Plug-and-Play" reliability for your machinery.
5. The Best "Drop-in" Alternative in China
The Message: Foshan Bohang is committed to being the top-tier Chinese alternative to Rexroth. We bridge the gap between high-priced originals and low-quality aftermarket parts. Our mission is to provide global customers with the most cost-effective, high-performance axial piston pumps and motors that match the original installation dimensions perfectly.
