FG Series Double Hydraulic Pump
3 week ago
Product details
FG Series Tandem Double Hydraulic Pump
1. Product Overview
FG Series Tandem Double Hydraulic Pump (also named FG series tandem gear pump) consists of two independent FG single pump units coaxially connected on one common drive shaft. It delivers two separate pressure oil flows simultaneously, eliminating the need for two separate motors and pumps. It is widely used in medium hydraulic power systems, construction machinery, material handling equipment and automated production lines that require two independent hydraulic circuits, perfectly matching the dual-pump structure shown in your product images.
2. Core Structure Composition
1. Common drive shaft: One input shaft drives two pump sections synchronously, simplifying transmission and reducing mechanical loss
2. Two independent pump cartridges: Two separate gear pumping chambers, each with its own inlet and outlet ports, enabling independent pressure and flow output
3. High-strength cast iron housing: Integral casting structure resists vibration and high-pressure impact, suitable for continuous heavy-duty operation
4. Dual seal groups: Independent oil-resistant sealing components for each pump section, preventing cross-leakage between two oil circuits
5. Standard flange mounting: Compatible with common motor connection interfaces, easy to install on hydraulic tank tops
3. Key Technical Parameters
Parameter Specification Range Remarks
Rated working pressure 16–21MPa Short-term peak pressure up to 25MPa
Displacement combination Customizable matching of two single pump displacements (e.g. 6+10mL/r, 10+16mL/r)
Rated speed 500–3000r/min Adapt to three-phase asynchronous motors and small diesel engines
Oil circuit form Two fully independent hydraulic circuits, no pressure interference between each other
Applicable fluid ISO VG32/46 anti-wear hydraulic oil, operating temperature -10℃~80℃
4. Working Principle
The prime mover (electric motor or engine) drives the shared input shaft to rotate two gear pump units at the same time. Each pump section independently completes oil suction and pressure boosting: the first pump supplies pressure oil for the main working circuit, and the second pump provides oil for the auxiliary circuit (such as clamping, steering, auxiliary lifting). Two oil paths are completely isolated, and each can be equipped with an independent relief valve to set respective working pressure, realizing independent control of two actuators.
5. Core Advantages
1. Compact integrated structure saves installation space, reduces the number of driving motors and simplifies hydraulic system layout
2. Two independent oil circuits avoid pressure interference, stable operation for complex multi-action equipment
3. Flexible displacement combination can be customized according to actual flow demand of two loops
4. Mature gear pump structure, low failure rate, universal spare parts, low maintenance cost
5. Coaxial synchronous drive ensures consistent flow output of two pumps, suitable for synchronous action occasions
6. Typical Application Scenarios
Medium forklifts and loaders, double-cylinder synchronous lifting platforms, multi-station automatic clamping jigs, sanitation vehicles with dual hydraulic functions, auxiliary hydraulic systems of small construction machinery, hydraulic power units with two independent working loops.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
4 year
Main Product:
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