greasegun

A grease gun is a tool used to apply lubricant under pressure through a grease fitting into bearings and other moving parts. It is commonly used in automotive, industrial, and agricultural maintenance. By forcing grease into a sealed cavity, a grease gun helps ensure that lubricant penetrates gaps and reduces wear.

Grease guns come in several configurations. Cartridge-type guns load a sealed grease cartridge that is punctured inside the gun; bulk-fill guns are loaded with grease from a tub and use a plunger. They can be operated by manual lever action, pistol grip, or rammers; powered versions use compressed air or electricity to drive the plunger.

Operation: Attach the nozzle or coupler to the grease fitting, prime if necessary, and pump or trigger until fresh grease appears at the bearing or until the cavity is filled. Use the correct nozzle and avoid over-pressurizing. Clean the area after application to prevent dirt contamination.

Maintenance and safety: Use the correct grease for the application and check compatibility (thickener, base oil, NLGI grade). Keep fittings and nozzles clean, replace worn seals, and bleed pressure before disassembly. Store in a clean, dry place.