GHP-F3.5/F3.5R Log Splitter Hydraulic Pump 2 Stage Log Splitter Pumps

The GHP-F3.5/F3.5R Log Splitter Hydraulic Pump is a two-stage hydraulic gear pump designed for efficient operation in log splitters, compactors, and similar applications. This pump features a dual-stage system combining a large displacement low-pressure pump and a small displacement high-pressure pump, enabling rapid cycle times and powerful performance. Typically, it delivers flow rates around 11-16 GPM and operates at pressures up to 3,000 PSI, with a maximum RPM of 3,600. The pump has a 2-G 3/8 fuel feed hole and requires a male NPT fitting for the outlet to prevent damage. Constructed with durable aluminum or cast iron housing, it ensures reliability for heavy-duty tasks.

GHP-F3.5/F3.5R Log Splitter Hydraulic Pump Specifications

Benefits of 2 Stage Hydraulic Pump for Log Splitter

1. Enhanced Efficiency Through Dual-Stage Operation: The two stage log splitter pump combines a high-flow, low-pressure stage for rapid ram movement with a low-flow, high-pressure stage for splitting tough logs. This dual mechanism reduces cycle times, improving productivity for large-scale wood-splitting tasks, typically achieving 11-16 GPM flow rates.
2. Increased Power for Tough Materials: With pressures up to 3600 PSI, the log splitter hydraulic pump delivers substantial force to split dense or knotty logs. The high-pressure stage engages automatically when resistance is encountered, ensuring consistent power without stalling, ideal for heavy-duty log splitter applications.
3. Faster Cycle Times: The high-flow stage enables quick ram extension and retraction, significantly reducing the time between splits. This speed enhances workflow efficiency, allowing users to process more logs in less time, which is critical for commercial or frequent use.
4. Durable and Reliable Construction: Constructed with robust materials like aluminum or cast iron, these log splitter pumps withstand rigorous use. Their design minimizes wear and tear, ensuring long-term reliability and reducing maintenance costs, even under demanding conditions like continuous log splitting.
5. Versatility Across Applications: The 2 stage hydraulic pump for log splitters is compatible with various log splitter models and other equipment like compactors. Their standardized fittings, such as 2-G 3/8 fuel feed hole and NPT outlets, make them adaptable for diverse hydraulic systems, enhancing their utility.
6. Energy Efficiency and Reduced Wear: By reducing the reliance on high-pressure operation during low resistance, a 2-stage hydraulic log splitter pump minimizes energy consumption and lowers stress on the hydraulic components. This results in extended equipment life and reduced maintenance costs over time.

How Does a 2 Stage Log Splitter Hydraulic Pump Work?

A two-stage hydraulic pump, commonly used in log splitters, operates by seamlessly switching between two operational modes—low-pressure/high-flow and high-pressure/low-flow—to optimize efficiency and power. The pump, typically a gear pump, consists of two sets of gears with different displacements housed within a durable aluminum or cast iron body.

In the low-pressure stage, the larger displacement gear set pumps a high volume of hydraulic fluid (typically 11-16 GPM) at lower pressure (around 500-1,000 PSI). This mode is engaged during the initial movement of the log splitter’s ram, allowing rapid extension toward the log, which minimizes cycle time and boosts productivity. Hydraulic fluid is drawn from a reservoir through an inlet, pressurized by the gears, and sent to the cylinder via a control valve.

When the ram encounters significant resistance, such as a tough or knotty log, an unloader valve (or pressure relief mechanism) activates, shifting the pump to the high-pressure stage. Here, the smaller displacement gear set takes over, delivering a lower volume of fluid but at much higher pressure (up to 3,600 PSI). This provides the force needed to drive the ram through the log, splitting it effectively. Once the resistance decreases, the unloader valve resets, returning the pump to the low-pressure stage for the return stroke.

This dual-stage operation ensures speed during light loads and power during heavy loads, reducing engine strain, improving fuel efficiency, and extending equipment lifespan, making it ideal for both residential and commercial log splitting.