Grease Package - 35 lb

A 50:1 ratio means the pump multiplies incoming air pressure by 50 to produce grease output pressure — for example, 100 PSI of supply air delivers up to 5,000 PSI at the grease outlet. This high mechanical advantage allows the pump to move thick, heavy greases efficiently without stalling, making it suitable for demanding lubrication applications.

This package includes everything needed to begin pumping grease from a 35-pound pail: a drum cover, follower plate, carrying handle, 6-foot delivery hose, z-swivel, and control handle in addition to the air-operated pump itself. You will need a compressed air source to power the unit, as the pump is air-operated.

A z-swivel is a multi-axis rotating fitting that connects the delivery hose to the dispense valve or grease gun coupler, allowing the hose to articulate freely without kinking or binding during use. This makes it significantly easier to maneuver the hose and grease coupler around equipment, especially in tight spaces.

The 5-year limited warranty applies specifically to the Aro "Thunder" air motor/pump, not necessarily all included accessories such as the hose, follower plate, or fittings. Review the warranty terms directly with American Lubrication for full coverage details on the ancillary components.

The follower plate seals against the inner walls of the pail and descends under air pressure as grease is pumped out, preventing air pockets and ensuring nearly complete evacuation of the container. The follower plate in this package is sized to fit a 35-pound pail, so it is not interchangeable with larger drum configurations without a different pump package.