Chicago Pneumatic 6151957222 Air Angle Grinder 4-1/2 in

Product Description

The CHICAGO PNEUMATIC 6151957222 is a pneumatic angle grinder built for metal fabrication, weld prep, and surface grinding in industrial and trade environments. It accepts 4-1/2 inch grinding wheels via a 5/8-11 spindle and spins at 12,000 RPM at a rated supply pressure of 90 psi. Air consumption runs at 29.7 CFM, so it requires a capable compressor and adequate line sizing. The aluminum alloy side handle and helical bevel gear drive are standard features on a tool intended for sustained production use. Licensed mechanics, pipefitters, ironworkers, and maintenance technicians are the primary users.

This angle grinder fits general metalworking applications including weld bead removal, deburring, cutting with appropriate wheels, and surface preparation before coating. The front exhaust directs air away from the work surface and the operator, which matters in confined or overhead work positions. A 1/4 inch NPT air inlet keeps the tool compact. The keyless adjustable guard allows repositioning without additional tooling, and the triggerlock feature reduces operator fatigue during extended runs. Suitable for shop, field, and maintenance applications where a consistent 90 psi air supply is available.

Key Features

• 4-1/2 inch wheel capacity with 5/8-11 spindle thread
• 12,000 RPM no-load speed at 90 psi supply pressure
• Helical bevel gear design for smooth, efficient power transfer
• Keyless adjustable protective guard for quick repositioning
• Triggerlock reduces hand fatigue during continuous operation
• Front exhaust directs airflow away from the work surface and operator
• Aluminum alloy side handle construction

Compatibility

Designed for use with standard 4-1/2 inch grinding, cutting, and flap disc wheels with a 5/8-11 arbor, connected to a compressed air system supplying a minimum of 90 psi and adequate CFM capacity through a 1/4 inch NPT air line.

Installation Notes

Installation and operation should be performed by qualified personnel familiar with pneumatic tool safety and applicable OSHA standards for abrasive wheel equipment. Always depressurize the air line and verify zero pressure at the inlet before mounting or changing wheels. Use only wheels rated at or above 12,000 RPM and sized for 4-1/2 inch grinders; inspect wheels for cracks or damage before each use. Ensure the air supply is clean and dry, and use a properly sized regulator and filter-lubricator in the supply line.