Proto JFC33HD Pistol Grease Gun 3600 Psi 18 in Flex Hose

Product Description

The PROTO JFC33HD is a manual pistol-grip grease gun rated for a maximum operating pressure of 3,600 psi. It ships with an 18-inch flexible hose terminating in a 1/8-inch NPT outlet fitting. The pistol-style body gives technicians single-hand trigger control, making it practical for tight access points in mechanical, fleet, and industrial service environments. The three-way fill system accepts bulk fill, standard 3-ounce grease cartridges, and a filler pump, so the gun adapts to whatever grease supply format is on hand. Licensed mechanics, lubrication technicians, and maintenance professionals working in heavy equipment, automotive, or industrial facilities are the primary users.

The JFC33HD suits general-purpose lubrication tasks wherever grease fittings (Zerk fittings) are present. Typical applications include chassis and suspension points on trucks and trailers, agricultural equipment, construction machinery, conveyor systems, and industrial gearboxes. The flexible hose reaches fittings that rigid-nozzle guns cannot access, and the high 3,600 psi pressure rating handles packed or partially blocked fittings without requiring a separate high-pressure gun.

Key Features

• 3,600 psi maximum operating pressure handles packed or restricted grease fittings
• 18-inch flexible hose for access to tight or awkward fitting locations
• 1/8-inch NPT outlet thread — standard sizing compatible with common coupler attachments
• Three-way fill: bulk load, standard cartridge, or filler pump
• Pistol-grip trigger operation allows single-hand use and controlled dispensing

Compatibility

Designed for use with standard 3-ounce grease cartridges and common 1/8-inch NPT grease couplers in general-purpose lubrication applications across automotive, fleet, agricultural, and industrial service settings.

Installation Notes

Maintenance technicians and mechanics should relieve any residual pressure in the gun before loading a new cartridge or bulk-filling the barrel. Confirm the coupler is fully seated on the grease fitting before squeezing the trigger to avoid blowback. When working near rotating components or energized machinery, follow all applicable lockout/tagout procedures before positioning the hose. Inspect the flexible hose for cracks or kinks before each use and replace if damaged.