FG series internal gear pumps are widely used in oil circulation, lubrication and cooling systems across industrial applications.
With stable flow output, high-pressure capability and flexible configuration options, they provide a reliable oil supply solution for both medium and heavy-duty systems.

Technical Selection Table

Key Parameter Explanation

Displacement (ml/r)
Defines the oil volume delivered per revolution and directly determines system flow capacity

Pressure (MPa)
It is recommended to maintain a 15–20% pressure margin to ensure stable operation under load fluctuations

Speed (rpm)
Standard operating speed is 1450 rpm, with compatibility for variable-speed systems depending on application

Flow Rate (L/min)
Calculated based on displacement and speed, used to match system demand

Construction Type

VPC-D
Flat key shaft design, suitable for standard coupling connections

VSC-D
Spline shaft design, suitable for high torque and shock-load applications

Customization Options

All models support flexible configuration for different system requirements

Rotation direction: clockwise or counterclockwise

Flange standards: DIN or SAE

Seal materials: NBR, FKM, PTFE for different temperature and chemical environments

Typical Industry Applications

CNC machining center cooling and lubrication systems

Die casting main system lubrication

Mining hydraulic crushing stations

Metallurgical continuous casting cooling systems

Transformer oil circulation systems

Port and heavy machinery hydraulic auxiliary systems

Selection Considerations

Flow matching
Ensure flow rate meets system demand without oversizing

Pressure margin
Maintain sufficient safety margin for stable long-term operation

Application environment
Select shaft type and sealing materials based on load, temperature and contamination level

Summary

FG series internal gear pumps provide a flexible and scalable solution for oil circulation systems.

By selecting the correct displacement, pressure range and configuration, engineers can achieve stable oil supply, improved system efficiency and reliable long-term performance across various industrial applications.