FG Series Single Hydraulic Pump
1. Basic Overview
The FG Series Single Hydraulic Pump is a classic fixed-displacement gear pump widely adopted in industrial hydraulics. Built with robust cast iron/aluminum alloy housings, it features compact layout, stable volumetric efficiency and broad mounting compatibility. It can work independently for single-circuit hydraulic supply, and also be combined coaxially to form FG tandem dual pumps for dual-circuit systems, matching the product forms in your uploaded photos. It is a common core component for small-to-medium hydraulic power units, material handling equipment and factory automation jigs.
FG Series Single Hydraulic Pump is a robust fixed-displacement Hydraulic gear pump. As a high-efficiency power supply hydraulic pump, it acts as the core energy conversion component for multiple types of industrial and mobile machinery hydraulic system. This single pump type Hydraulic gear pump adopts optimized external gear design. It converts rotational mechanical torque into hydraulic energy, delivering steady pressurized fluid flow to the hydraulic system. This durable hydraulic pump features stable volumetric efficiency and provides reliable power source for standardized and customized hydraulic system.
2. Main Structure
1. Pump Body: High-rigidity cast iron or lightweight aluminum housing, anti-deformation under continuous pressure load;
2. Precision Gear Pair: Hardened meshing gears for low noise, low wear and steady oil delivery;
3. Shaft Seal Kit: Oil-resistant skeleton seal + wear-resistant bushing to prevent medium leakage at the drive end;
4. Standard Ports: Threaded/flanged inlet and outlet for easy field piping connection;
5. Standard Flange Mount: Direct assembly on hydraulic tank tops or coupled with electric motors.
3. Key Performance Specifications
Parameter Standard Range Remarks
Rated Working Pressure 14–21MPa Peak pressure up to 24MPa for short-time operation
Displacement Range 2–25mL/r Multiple displacement grades for flow customization
Operating Speed 500–3000r/min Matches electric motors and small combustion engines
Working Fluid ISO VG anti-wear hydraulic oil, applicable temperature: -10℃~80℃
Mounting Type Horizontal flange installation, standalone single-pump layout
4. Working Principle
Power from a motor or engine rotates the driving gear, which meshes and turns the driven gear synchronously. The expanding suction chamber creates negative pressure to draw oil from the reservoir; oil trapped in gear tooth gaps is transported to the pressure chamber, where shrinking volume compresses oil to generate stable high pressure for the single hydraulic circuit. A matching relief valve limits the maximum system pressure for overload protection.
5. Core Advantages
1. Compact standalone design saves installation space for small single-circuit stations;
2. Hardened internal parts extend service life under frequent start-stop cycles;
3. Universal spare parts including seals and bearings cut maintenance costs greatly;
4. Flexible displacement options cover light to medium load industrial scenarios;
5. Easy to upgrade: multiple single pumps can be assembled into FG tandem dual pumps later for dual independent circuits.