Modern agricultural operations demand exceptional mechanical endurance. As harvesting technology evolves, hydraulic systems must handle continuous, demanding cycles under changing field loads—all while maintaining maximum fuel efficiency and zero pressure drops.
To meet these harsh open-field demands, Guangdong Haozheng Hydraulic Equipment Co., Ltd. engineers and manufactures the HZ-70453-LBG Axial Piston Pump. Based on our robust HZ70 medium-pressure swashplate series, this 45cc piston pump is optimized specifically to deliver stable, low-noise fluid power to heavy-duty agricultural machinery.
1. Product Overview: Engineering of the HZ-70453-LBG
The HZ-70453-LBG is a medium-pressure, variable displacement swashplate-design axial piston pump. Engineered for open-circuit hydraulic systems, it features a highly responsive control block designed to minimize energy wastage by matching oil output dynamically to system demands.
Key Technical Parameters (HZ70453 Variant):
- Displacement: $45\text{ ml/r}$ (providing excellent flow capacity for medium-to-heavy hydraulic circuits).
- Rated Operating Pressure: $210\text{ bar}$ ($3,045\text{ PSI}$) continuous.
- Maximum Peak Pressure: $265\text{ bar}$ ($3,843\text{ PSI}$) intermittent threshold.
- Maximum Rotational Speed: $3,000\text{ RPM}$.
- Power Output:
- At standard engine speeds ($1,500\text{ r/min}$): $70\text{ kW}$
- At maximum rotational speed ($N_{\max}$): $93\text{ kW}$
- Dry Weight: A compact $16\text{ kg}$, offering an outstanding power-to-weight ratio that reduces structural loads on vehicle chassis.
2. Advanced Control Options: Constant Pressure & Constant Flow
The structural magic of the HZ-70453-LBG lies in its control versatility. Agriculture is highly dynamic; a tractor may idle while turning at a headland but require immediate maximum fluid power when lifting a heavy plow.
Our HZ70 series offers advanced constant pressure (pressure compensation) and constant flow (load-sensing) control options. By continuously adjusting the internal angle of the swashplate, the HZ-70453-LBG ensures the engine never stalls under sudden pressure spikes. It de-strokes automatically to standby mode when hydraulic functions are inactive, saving fuel and preventing system heat buildup in hot harvesting conditions.
3. Dedicated Agricultural Application Scenarios & Machinery
Because of its compact footprint ($16\text{ kg}$), fast rotational speed ($3,000\text{ RPM}$), and high-pressure resilience, the HZ-70453-LBG is widely integrated as the primary or auxiliary fluid driver across several heavy-duty agricultural machines:
A. Large-Scale Combine Harvesters
- The Role: Harvesters require stable hydraulic power to drive the header lift, reel speed, and discharge auger. The HZ-70453-LBG provides high-torque fluid transmission to handle dense, heavy crops smoothly without slowing down the vehicle’s speed.
B. High-Horsepower Tractors
- The Role: Acting as the hydraulic heart for rear three-point hitches, power take-off (PTO) controls, and auxiliary remote spool valves. It provides the fluid force required to raise massive seed drills, rotary tillers, and deep-ripping plows.
C. Large Self-Propelled Crop Sprayers
- The Role: Powering the hydrostatic boom-folding systems and driving the hydraulic chemical pump motor. The precise, low-pulsation flow of the HZ-70453-LBG ensures steady pressure to chemical spray nozzles, allowing for uniform field application.
4. The Haozheng Manufacturing Standard: Why Choose Us?
At Guangdong Haozheng Hydraulic Equipment Co., Ltd., we understand that field downtime during a critical planting or harvest window can cost farming operations thousands of dollars per hour. That is why our hydraulic pumps manufacturing processes adhere to strict industrial quality standards:
- Sub-Micron Machining Tolerances: We control the internal clearances between our pistons and the cylinder barrel block to within $5 – 8\text{ microns}$, maintaining a volumetric efficiency above 95% and minimizing internal oil leakage.
- Tough Bimetallic Metallurgy: Our HZ70 series utilizes high-strength steel housings coupled with specialized bimetallic bronze-on-steel valve plates and piston slippers. This lowers the coefficient of friction and prevents metal galling under extreme summer heat.
- 100% Load Bench Testing: Every single HZ-70453-LBG pump we produce is dynamically tested under full pressure on our digitized testing benches before shipping, ensuring it delivers its rated $70\text{ kW}$ to $93\text{ kW}$ power output flawlessly right out of the box.
Conclusion
The HZ-70453-LBG Axial Piston Pump is a robust, highly efficient, and light-weight fluid power solution designed to keep heavy agricultural machinery running reliably under the toughest seasonal schedules.
For agricultural machinery OEMs, hydraulic parts distributors, and fleet maintenance managers looking to optimize system reliability while managing procurement economics, sourcing directly from Guangdong Haozheng Hydraulic Equipment Co., Ltd. delivers field-proven performance you can depend on.