Graco LubePro A2900 Vertical Air-Operated Grease Pump

The Graco LubePro A2900 is the grease version of the LubePro vertical single-stroke pump. Air pressure drives a piston that pushes a measured shot of grease into the supply line, feeding series progressive or single-line parallel metering devices that lubricate bearings on machinery in a plant.

An air-powered grease pump for centralised bearing lubrication

Bearings fail early when grease is missed, mis-timed or over-applied. A centralised system with an A2900 at its head delivers a defined volume of grease on a timer, so the lubricant reaches every point without a technician walking the line.

The pump has a 29:1 pressure ratio and gives 0.58 cubic inches per stroke. Compressed air makes it easy to install on existing air lines, and the vent built into the pump relieves line pressure automatically on the return stroke.

Technical specifications

Selecting reservoir size and variant

The manual lists reservoir sizes of 1 lb, 3 lb and 4 lb. Choose the larger reservoir when the system has many lube points or when refilling is awkward. Versions with a low-level switch send a signal to a PLC or alarm when the grease runs low; the normally open and normally closed versions are separate part numbers.

Use NLGI grades 00, 0, 1 or 2 only. The pump is rated for 125 psi air at the inlet, even though the web page shows a higher figure, and we quote the manual. Fill with the quick coupler, prime the lines, and bleed any air from the feeder lines. A pump that is slow to build pressure usually has air trapped in the system, and the manual includes an air-lock procedure and a troubleshooting table for that case. Use only non-corrosive, non-abrasive lubricants, and follow the pressure relief procedure in the manual before servicing, because high-pressure fluid can pierce the skin.

Documents and quotation

The linked PDF is Graco instruction manual 3A4096N for the 29:1 LubePro vertical grease pump. Our photograph is Graco’s own product image for the 24Z059 model, and the part number on your quotation should still be checked against the model table. Please confirm the part number, reservoir size, switch contact type, air-fitting standard and the grease grade and metering devices on your system before ordering. Send us the part number, quantity and delivery location and we will prepare a quotation; Seven Star LLC supplies from Muscat as an independent supplier. Related lubrication equipment is in our Pumps category, including the Bijur Delimon MultiPort II mobile progressive grease lubricator.