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5:1 Ratio Stub Oil Pump (LM-2305A-11B)

5:1 Ratio Stub Oil Pump (LM-2305A-11B)

by American Lubrication
SKU 206
$1,601.21 - $1,601.21
$1,601.21
$1,601.21 - $1,601.21
$1,601.21

5:1 ratio stub oil pump with 3" ARO "Thunder" air motor. Includes bung adapter. Pump has 1/4" (F) air inlet, 1 1/2"(F) fluid inlet, and 1/2"(F) fluid outlet.

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Frequently asked questions

Find answers to common questions about our products and services

  • The 5:1 ratio means the pump generates 5 PSI of fluid outlet pressure for every 1 PSI of air pressure supplied to it. By adjusting the incoming air pressure at your regulator, you can precisely control the fluid output pressure delivered by the pump.

  • This pump has three ports: a 1/4" female air inlet, a 1 1/2" female fluid inlet, and a 1/2" female fluid outlet. You will need male fittings or hose ends sized to match each of these female connections for your air supply line and fluid lines.

  • The included bung adapter connects the pump's fluid inlet directly to the bung opening of a drum or container, allowing you to draw fluid straight from the source without sourcing a separate adapter.

  • This pump is specifically designed for oil. Compatibility with other fluid types is not specified for this pump, so confirm with the manufacturer before using it with non-oil fluids.

  • This pump is driven by a 3" ARO "Thunder" air motor. The air inlet is 1/4" female thread, so your air supply line or fitting must match that port size. Specific air pressure and CFM requirements are not detailed for this product — consult the manufacturer or product documentation to confirm your compressor meets the motor's needs.

Key Features

  • 5:1 pump ratio delivers reliable pneumatic-powered fluid transfer for oil applications

  • Powered by a 3" ARO "Thunder" air motor for consistent, air-driven performance

  • Includes a bung adapter for direct and convenient drum mounting

  • 1/4" (F) air inlet provides a standard connection point for pneumatic supply lines

  • Features a 1-1/2" (F) fluid inlet and 1/2" (F) fluid outlet for flexible plumbing configurations