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Monster 4 GPM Bare Pump - 1hp, 120/230V 60HZ
A modular, heavy-duty fluid transfer system pairing our flagship positive displacement pumphead with an industrial-grade US-Made Baldor motor.
- The Pumphead: Monster GSM25 cast-iron positive displacement pumphead with helical-cut steel gears (4 GPM). Self-priming.
- The Motor: Stock US-Made Baldor Motor (1hp, 3450 RPM, 120/230V 60HZ).
- Drive System: Includes three-piece shaft coupler with rubber element.
- Out of the Box: Shipped bare. Requires custom hardwiring and mounting.
The ultimate heavy-duty transfer system. We pair our flagship cast-iron positive displacement pumphead with an industrial-grade US-made Baldor motor for fast, open-ended transfer of light to heavy viscosity oils at a reliable 4 GPM.
Engineered to provide a truly robust, high-volume transfer solution, the Monster Transfer Series is built modularly. By combining a dedicated, heavy-duty fluid pumphead with an industrial-grade electric motor, we've created a self-priming, continuous-duty system built to excel in demanding environments and optimized for specific fluid applications.
The Heart + The Muscle (Our Modular Philosophy)
Our pumps are designed as true fluid transfer systems by pairing a specialized pumphead (The Heart) with a powerful electric motor (The Muscle). This allows us to create the perfect tool tailored for your specific viscosity and application needs.
Component 1: The Monster GSM25 Pumphead
At the heart of the system is the GSM25—a direct-drive, cast-iron positive displacement gear pumphead. It utilizes large displacement, helical-cut steel gears for incredibly fast, quiet, and pulseless fluid transfer. It is inherently self-priming, relies on the fluid you pump for internal lubrication, and features high-temp Viton seals.
Component 2: The Electric Motor
Because moving thicker fluids efficiently requires substantial torque, we match the pumphead with a power plant built to handle the load. This bare pump assembly features a Stock US-Made Baldor Motor. It is shipped without a handle or wiring, providing an excellent foundation for hardwiring the pump into a custom skid, processing system, or existing shop infrastructure.
Motor Specifications
| Motor Feature | Specification |
|---|---|
| Part Number | [Stock Baldor TEFC]* |
| Horsepower | 1hp |
| Operating Speed | 3450 RPM |
| Voltage | 120/230V 60HZ |
| Wiring / Controls | None. Motor must be hardwired by the user. |
| Frame Size | NEMA 56C |
System Performance Specifications
- System Flow Rate: 4 GPM
- Pump Design: Positive Displacement Gear Pump
- Self-Priming: Yes
- Port Size: 1" NPT Inlet / Outlet
What’s Included in the Box
- GSM25 Cast-Iron Gear Pumphead
- US-Made Baldor Electric Motor (1hp)
- Three-piece shaft coupler with rubber element
- Two (2) 1" NPT to 1.25" Hose Barbs
- Note: Hoses and wands are sold separately.
| Flow Rate | 4 GPM |
|---|---|
| Horse Power | 1hp |
| Voltage | 120/230V 60HZ |
| Pressure | Unregulated |
| Oil Viscosity | Gear Oil |
| wiring | No Wiring |
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