For high-speed deburring, contour grinding, and localized material removal with shank-mounted accessories, the Ingersoll Rand G3H180RG4 Angle Air Die Grinder combines a 1.35 HP pneumatic motor with 18,000 RPM free speed and a 1/4-inch collet. This speed-and-power combination supports productive finishing on fabricated parts, castings, weld areas, and machinery components where a conventional guarded wheel grinder would be too large or poorly suited to the surface profile.
The Ingersoll Rand G3H180RG4 secures compatible carbide burrs, mounted points, flap wheels, and other 1/4-inch shank accessories through its collet system. A collet grips the accessory shank directly, allowing the operator to select tooling according to the material, profile, and required finish. Its rear exhaust routes discharged air away from the immediate grinding area, while the 18,000 RPM output provides faster accessory rotation than the 15,000 RPM G3H150RG4 configuration for applications that benefit from increased surface speed.
Type: Angle Air Die Grinder | Model: G3H180RG4 | Series: G3 Series | Motor Power: 1.35 HP | Free Speed: 18,000 RPM | Collet Size: 1/4" | Exhaust: Rear
Features:
- 1.35 HP pneumatic motor supplies power for deburring, weld cleanup, contour grinding, and localized surface preparation.
- 18,000 RPM free speed supports fast material removal with compatible shank-mounted accessories rated for the tool speed.
- 1/4-inch collet accepts properly matched carbide burrs, mounted points, flap wheels, and other accessories with compatible shanks.
- Collet-mounted configuration allows tooling to be selected according to the workpiece material, geometry, and required finish.
- Rear exhaust directs discharged air away from the accessory and immediate work surface.
- Higher-speed setup provides an alternative to the 15,000 RPM G3H150RG4 when the abrasive or burr application benefits from increased rotational speed.
- G3 Series motor platform supports repeated grinding and deburring work in fabrication, repair, and production environments.
Made in USA: 
Applications:
- Metal fabrication — deburring cut edges, blending localized weld areas, and refining fabricated components with compatible mounted abrasives.
- Foundry and casting cleanup — removing flash, parting lines, and surface imperfections from accessible areas of cast parts.
- Industrial maintenance and MRO — cleaning machinery components, preparing repair areas, and removing localized corrosion or damaged material.
- Heavy equipment and transportation repair — working around brackets, housings, joints, and structural components with suitable carbide burrs or mounted points.
- General manufacturing — performing repetitive edge finishing, porting, deburring, and localized material removal on production parts.
FAQs:
- Q: What accessories fit the Ingersoll Rand G3H180RG4?
A: Use compatible accessories with a 1/4-inch shank, including properly rated carbide burrs, mounted points, and small finishing wheels. Confirm the accessory dimensions, material suitability, and maximum operating-speed rating before use. - Q: How does the G3H180RG4 differ from the G3H150RG4?
A: The G3H180RG4 operates at 18,000 RPM, while the G3H150RG4 operates at 15,000 RPM. Both supplied models use a 1/4-inch collet and 1.35 HP motor, so the primary difference is accessory speed. - Q: Can a conventional grinding wheel be mounted on this tool?
A: This model is configured with a 1/4-inch collet for shank-mounted accessories. Do not install conventional threaded-spindle grinding wheels or accessories that are not intended for the collet configuration. - Q: What does the 18,000 RPM specification mean?
A: It is the grinder's free speed, meaning rotational speed without load. Actual working speed changes with the accessory, applied pressure, workpiece material, and available compressed-air supply. - 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, helping reduce direct airflow disturbance near the grinding area.
Available Variations and Specifications
| Model | HP | RPM | Exhaust | Output | Type | Weight lb (kg) |
Length in (mm) |
Height in (mm) |
CFM |
|---|---|---|---|---|---|---|---|---|---|
| G-Series Angle Grinders | |||||||||
| G3A100RP106 | 1.35 | 10,000 | Rear | 5/8" – 11 thread, 6" guard | 27, 28 | 4.9 (2.2) | 9.6" (244) | 3.6" (91) | 33 |
| G3A120RG4 | 1.35 | 12,000 | Rear | 1/4" collet | N/A | 3.7 (1.6) | 9.5" (241) | 3.3" (84) | 55 |
| G3A120RP1045 | 1.35 | 12,000 | Rear | 5/8" – 11 thread, 4.5" guard | 27, 28 | 4.6 (2) | 9.6" (244) | 3.6" (91) | 55 |
| G3A120RP105 | 1.35 | 12,000 | Rear | 5/8" – 11 thread, 5" guard | 27, 28 | 4.7 (2.1) | 9.6" (244) | 3.6" (91) | 55 |
| G-Series Horizontal Grinders | |||||||||
| G3H150RG4 | 1.35 | 15,000 | Rear | 1/4" collet | N/A | 2.3 (1) | 9.1" (231) | N/A | 33 |
| G3H180RG4 | 1.35 | 18,000 | Rear | 1/4" collet | N/A | 2.3 (1) | 9.1" (231) | N/A | 55 |
| G-Series Extended Angle Sanders | |||||||||
| G3L086RS10 | 1.35 | 8,600 | Rear | 5/8" – 11 thread | N/A | 4.3 (1.9) | 13.0" (330) | 3.0" (76) | 33 |
| G-Series Extended Horizontal Grinders | |||||||||
| G3X150RG4 | 1.35 | 15,000 | Rear | 1/4" collet | N/A | 3.7 (1.6) | 14.1" (358) | N/A | 33 |
| G3X150RH64 | 1.35 | 15,000 | Rear | 3/8" – 24 thread, 4" guard | 1 | 4.5 (2) | 14.1" (358) | N/A | 33 |
| G3X180RG4 | 1.35 | 18,000 | Rear | 1/4" collet | N/A | 3.7 (1.6) | 14.1" (358) | N/A | 55 |
| G3X180RH63 | 1.35 | 18,000 | Rear | 3/8" – 24 thread, 3" guard | 1 | 4.5 (2) | 14.1" (358) | N/A | 55 |
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
warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
