Ingersoll Rand G3A120RG4 G3 Series Angle Grinder | 1.35 HP | 12,000 RPM | 1/4" Collet | Rear Exhaust

For high-output deburring, weld cleanup, and contour grinding with mounted accessories, the Ingersoll Rand G3A120RG4 G3 Series Angle Grinder combines a 1.35 HP pneumatic motor with 12,000 RPM free speed and a 1/4-inch collet. The angle-head configuration positions compatible carbide burrs, mounted points, and other shank-mounted abrasives for controlled contact with edges, recesses, castings, and fabricated components. This setup gives metalworkers substantial material-removal power without using the threaded spindle and guarded grinding wheels found on conventional right-angle wheel grinders.

The Ingersoll Rand G3A120RG4 is an angle die grinder, meaning its collet grips the straight shank of a compatible accessory rather than mounting a large abrasive wheel on a threaded arbor. Its rear exhaust directs discharged air away from the immediate work area, while the 12,000 RPM operating speed supports controlled work with accessories selected for the material, task, and required finish. A 3.7-pound body and 9.5-inch overall length provide a balance of output and maneuverability for fabrication, foundry cleaning, machinery repair, and production finishing.

Type: Angle Die Grinder | Model: G3A120RG4 | Series: G3 Series | Configuration: Right Angle | Motor Power: 1.35 HP | Free Speed: 12,000 RPM | Collet Size: 1/4" | Exhaust: Rear | Weight: 3.7 lb (1.6 kg) | Length: 9.5" (241 mm) | Air Inlet: 3/8" NPT | Minimum Hose Size: 1/2" | Sound Pressure: 86.4 dB(A) | Sound Power: 97.4 dB(A) | Air Consumption: 55 CFM

Features:

• 1.35 HP pneumatic motor supplies substantial power for deburring, contour grinding, weld cleanup, and surface preparation.
• 12,000 RPM free speed supports controlled material removal with properly rated shank-mounted accessories.
• 1/4-inch collet accepts compatible carbide burrs, mounted points, flap wheels, and other accessories with matching shank dimensions.
• Right-angle configuration improves accessory positioning on edges, recesses, castings, and surfaces that are awkward to approach with a straight die grinder.
• Rear exhaust directs discharged air away from the accessory and immediate work area.
• 3.7-pound body balances the output of the G3 motor platform with maneuverability during production and repair work.
• 9.5-inch overall length supports access around machinery, fixtures, and fabricated assemblies.

Made in USA:

Applications:

• Metal fabrication — blending weld areas, deburring cut edges, and cleaning fabricated parts with compatible mounted abrasives.
• Foundry and casting cleanup — removing flash, parting lines, and localized surface imperfections from compatible cast components.
• Industrial maintenance and MRO — cleaning machinery parts, refining repair areas, and preparing metal surfaces during equipment service.
• Heavy equipment and rail repair — working around brackets, housings, joints, and contoured components where angle-head access is useful.
• General manufacturing — performing repetitive deburring, edge finishing, and localized material removal on production components.

FAQs:

• Q: Is the G3A120RG4 a wheel grinder or an angle die grinder?
  A: It is an angle die grinder equipped with a 1/4-inch collet. It uses compatible shank-mounted accessories rather than large grinding wheels mounted on a threaded spindle.
• Q: What accessories fit the 1/4-inch collet?
  A: Use properly rated accessories with a 1/4-inch shank, such as compatible carbide burrs, mounted points, and small finishing wheels. Confirm the accessory diameter, shank fit, material suitability, and maximum operating speed before use.
• Q: Can a 4-inch or 4.5-inch grinding wheel be installed on this tool?
  A: No. This model uses a collet and is not configured with a threaded spindle and wheel guard for conventional grinding wheels. Select a guarded G3 wheel-grinder model for that type of accessory.
• Q: What air supply does the G3A120RG4 require?
  A: The listed air consumption is 55 CFM, with a 3/8-inch NPT inlet and a minimum 1/2-inch hose. The compressor, regulator, fittings, and hose must maintain the required airflow and pressure while the grinder is under load.
• Q: What does rear exhaust do?
  A: Rear exhaust routes discharged air toward the back of the tool instead of around the collet and workpiece. This helps reduce direct airflow disturbance near the grinding area.

Looking for more information about the Ingersoll Rand Grinder? Click here to view the Catalog

For help choosing the correct Ingersoll Rand Grinders for your application, please call (800) 608-5210 or email info@intlairtool.com