Monster 25 GPM Bare Pump - 2hp, 120/230V 60HZ

The Monster 25 GPM Bare Pump in 2HP is the highest-torque single-phase configuration in the GSM25 pumphead line. Where the 1HP bare pump handles light to medium viscosity fluids under normal load, the 2HP steps up for heavier fluids, longer continuous run cycles, and installations where the motor needs sustained torque without thermal stress. Same GSM25 cast-iron pumphead, same 25 GPM flow rate — more horsepower in reserve.

The GSM25 is a larger displacement pumphead than the GSM13 — it moves more fluid per revolution, reaching 25 GPM at 3450 RPM. The 2HP Baldor motor provides the most torque headroom of any single-phase configuration in the Monster bare pump line, making this the right choice when you're moving gear oil, hydraulic fluid, or other medium-to-heavy viscosity fluids in a permanent installation. Ships bare: no handle, no switch, no plug.

Bare Pump — No Handle, No Wiring

This unit ships without a carry handle, switch, or pre-wired cord. It is intended for permanent or semi-permanent installation where you will provide your own mounting, wiring, and controls. If you need a ready-to-run portable unit, see the Monster 25 GPM Portable Pump (W2066).

The GSM25 Pumphead

The GSM25 is a direct-drive, cast-iron positive displacement gear pumphead with helical-cut steel gears. Larger displacement than the GSM13 — moves more fluid per revolution for higher flow at equivalent shaft speeds. Self-priming, pulseless, and quiet. Viton seals for compatibility with vegetable oils, motor oils, gear oils, and light to medium viscosity fluids.

The Motor

US-Made Baldor industrial motor, 2HP, 3450 RPM, 120/230V 60HZ, NEMA 56C frame. Ships bare — no switch, no cord, no handle. Requires hardwiring by a qualified electrician.

Specifications

• SKU: W2081
• Pumphead: GSM25 Cast-Iron Positive Displacement Gear Pump
• Motor Speed: 3450 RPM
• Flow Rate: 25 GPM
• Self-Priming: Yes
• Port Size: 1" NPT Inlet / Outlet
• Seals: Viton (high-temp)
• Motor: 2 HP, 120/230V 60HZ, NEMA 56C
• Handle: Not included (bare pump)
• Wiring: Not included — requires hardwiring
• Viscosity: Light to medium viscosity oils

What's in the Box

• GSM25 Cast-Iron Gear Pumphead
• US-Made Baldor Motor (2 HP, 120/230V 60HZ)
• Three-piece shaft coupler with rubber element
• Two (2) 1" NPT to 1.25" Hose Barbs

Note: Hoses, wands, switches, and mounting hardware are sold separately. Requires hardwiring into 120V or 230V single-phase power source.