Pro-source 5555001122PRO Air Angle Grinder 4 in 3500 Rpm

Product Description

The PRO-SOURCE 5555001122PRO is a pneumatic angle grinder designed for grinding, cutting, and surface preparation tasks in trade and industrial environments. It accepts a 4-inch wheel and spins at 3,500 RPM, driven by compressed air at 90 psi. At 0.40 horsepower and a consumption rate of 3.90 CFM, it delivers consistent power from a standard shop air supply. The 1/4-inch NPT inlet keeps it compatible with common pneumatic setups, and the rear exhaust directs airflow away from the work surface. A safety lever with triggerlock gives the operator positive control during extended use. At 2.6 pounds, it is light enough for overhead and confined-space work.

This grinder fits typical applications in HVAC, plumbing, electrical, and general mechanical trades where metal stock, weld seams, or pipe ends require grinding or cutting. It is suited for residential and light commercial job sites with access to a compressor capable of sustaining 90 psi at the required CFM. The M6x1 spindle accommodates standard 4-inch depressed-center wheels and grinding discs. The 11-inch overall length keeps it maneuverable in tighter work areas. Licensed tradespeople and shop mechanics are the primary users of this tool.

Key Features

• 4-inch wheel diameter with M6x1 spindle thread for standard grinding disc compatibility
• 3,500 RPM free speed powered by 90 psi compressed air
• 3.90 CFM air consumption compatible with common shop compressors
• Safety lever switch with triggerlock for controlled, extended operation
• Rear exhaust directs airflow away from the operator and work surface
• 2.6-pound tool weight suited for overhead and tight-access installations

Compatibility

Designed as a standard pneumatic angle grinder accepting 4-inch grinding wheels and cutting discs with an M6x1 spindle, compatible with 1/4-inch NPT air supply lines operating at 90 psi.

Installation Notes

Installation and use of this tool should be performed by qualified personnel familiar with pneumatic tool safety and applicable OSHA standards. Before attaching or changing wheels, disconnect the air supply line and verify the grinder is fully depressurized. Ensure the air supply delivers clean, dry, regulated air at 90 psi and can sustain 3.90 CFM to avoid power loss under load. Always inspect the grinding wheel for cracks or damage before use, and confirm the wheel RPM rating meets or exceeds the grinder free speed.