More machine builders are moving toward platform-based development:
one base architecture with multiple derived models covering different tonnage, stroke lengths, or station counts.

Under this strategy, maximizing component commonality becomes essential.
Among all shared components, the choice of the main hydraulic pump directly impacts development efficiency, system consistency, and long-term scalability.

Industry Context: Fragmented Pump Selection Slows Platformization

When different models use different pump brands or series, several issues emerge:

R&D effort increases, as each model requires separate validation and tuning

Purchasing and spare parts management become complex due to multiple suppliers and interfaces

Noise, pulsation, and dynamic response vary across models, making experience difficult to reuse

Standardizing servo energy-saving systems or modular power units becomes harder due to inconsistent pump behavior

These factors reduce the efficiency gains that platform-based development is meant to deliver.

Core Approach: Define a Unified Pump Family First

To address these challenges, many platform design teams are standardizing on a single pump family across all models.

FG and FG21 internal gear pumps provide a scalable range that supports this approach.

Step 1: Define the Pump Family Window

A typical platform strategy covers different machine levels using the same pump family:

FG0 (3.8–24 mL/r) for light-duty and small-flow applications

FG1 (25–63.7 mL/r) as the mainstream “standard power source” for most models

FG2 (64.7–125 mL/r, extendable up to ~160 mL/r) for larger systems requiring higher flow

With this structure, all models use pumps from the same FG family, differing only in displacement.

Step 2: Integrate Multi-Circuit Capability with FG21

For machines requiring both main and auxiliary hydraulic functions:

FG21 dual internal gear pumps can be introduced in mid- and high-end models

Front pump supplies the main high-pressure circuit

Rear pump supports ejectors, clamps, tilting mechanisms, and other auxiliary motions

This maintains a consistent architecture while enabling functional expansion.

Step 3: Standardize Control Logic and Parameter Templates

FG / FG21 pumps share common operating characteristics:

Rated pressure: 31.5 MPa
Maximum pressure: up to 35 MPa
Speed range: 200–3000 r/min
Low pulsation and low noise due to internal gear design

These consistent parameters allow engineers to develop a unified servo or VFD control strategy, requiring only minor adjustments for different models.

Platform-Level Benefits in Practice

Projects adopting this approach typically achieve three major improvements.

Shorter Development Cycles

New variants can be developed by recalculating cylinder sizes and flow requirements, then selecting a suitable displacement within the FG range

No need to redesign the hydraulic power base for each model

Simplified Procurement and Spare Parts Management

Unified pump family reduces supplier complexity

Inventory becomes easier to manage due to standardized components

Improved Service and Field Support

Field engineers can apply the same diagnostic and tuning knowledge across multiple models

Troubleshooting becomes faster due to consistent system behavior

Engineering Value: From Component Selection to Platform Architecture

Using FG / FG21 pumps as a unified power base shifts pump selection from a per-model decision to a platform-level strategy.

It enables:

Consistent hydraulic behavior across models

Scalable architecture for future expansion

Reduced engineering redundancy

Better integration of servo energy-saving systems

Summary

For machine builders aiming to create true product platforms, hydraulic pump standardization is a key enabler.

FG / FG21 internal gear pumps provide:

A scalable displacement range covering multiple model levels

Consistent pressure, speed, and noise characteristics

Support for both single-circuit and multi-circuit architectures

A unified foundation for development, purchasing, and service

Rather than optimizing each machine individually, this approach establishes a reusable hydraulic platform, ensuring that future models can be developed faster and more consistently without being limited by fragmented pump selection.