For weld grinding, edge preparation, and surface conditioning with a mid-size abrasive wheel, the Ingersoll Rand G3A120RP105 Angle Grinder combines a 1.35 HP pneumatic motor with 12,000 RPM free speed, a 5/8"-11 threaded spindle, and a 5-inch guard. This configuration gives fabricators and maintenance teams a practical balance between the working area of a larger wheel and the maneuverability needed around frames, joints, plates, and fabricated components.
The Ingersoll Rand G3A120RP105 is part of the G3 Series and is configured for compatible 5-inch abrasive accessories that match its spindle, guard, and speed requirements. Its rear exhaust directs discharged air away from the immediate grinding interface, helping reduce airflow disturbance near the abrasive and workpiece. The angle-head layout supports controlled wheel contact on flat surfaces, edges, and weld areas during material removal, blending, and preparation work.
Type: Angle Grinder | Model: G3A120RP105 | Series: G3 Series | Configuration: Angle | Motor Power: 1.35 HP | Free Speed: 12,000 RPM | Spindle Thread: 5/8"-11 | Guard Size: 5" | Exhaust: Rear
Features:
- 1.35 HP pneumatic motor supplies power for grinding, weld cleanup, material removal, and surface-preparation operations.
- 12,000 RPM free speed supports compatible abrasive accessories selected for the grinder's operating speed and application.
- 5/8"-11 threaded spindle accepts properly matched grinding and surface-preparation accessories.
- 5-inch guard configuration supports compatible abrasive wheels while helping contain debris and fragments during use.
- Angle-head layout provides practical tool positioning on flat surfaces, edges, weld seams, and fabricated components.
- Rear exhaust routes discharged air away from the immediate work area and grinding interface.
- G3 Series configuration provides a focused combination of pneumatic power, speed, and wheel capacity for repeated surface-preparation work.
Made in USA: 
Applications:
- Metal fabrication — grinding welds, removing excess material, and preparing fabricated parts for finishing or coating.
- Structural and equipment repair — conditioning plates, brackets, frames, and machinery components during maintenance work.
- Foundry and casting cleanup — removing gates, parting lines, and surface imperfections from compatible cast components.
- Industrial maintenance and MRO — cleaning corrosion, coatings, and damaged surface areas from machinery and equipment.
- General manufacturing — performing repeated grinding and blending operations on production parts and assemblies.
FAQs:
- Q: What wheel size is the Ingersoll Rand G3A120RP105 configured to use?
A: The grinder is configured with a 5-inch guard. Use only compatible abrasive accessories that match the guard, spindle thread, application, and manufacturer requirements. - Q: What accessories fit the 5/8"-11 spindle?
A: Use properly rated grinding and surface-preparation accessories with a matching 5/8"-11 mounting interface. The accessory must also be suitable for the 5-inch guard and rated at or above 12,000 RPM. - Q: How does this model differ from the G3A120RP1045?
A: The G3A120RP105 uses a 5-inch guard, while the G3A120RP1045 uses a 4.5-inch guard. Both supplied titles list a 1.35 HP motor, 12,000 RPM speed, 5/8"-11 spindle, and rear exhaust. - Q: What does rear exhaust mean?
A: Rear exhaust means discharged air exits toward the back of the grinder instead of directly around the wheel and workpiece, helping reduce airflow disturbance near the grinding area. - Q: Can a larger wheel be installed if it fits the spindle?
A: No. Wheel compatibility depends on the guard size, spindle, abrasive dimensions, accessory type, and maximum operating speed. A matching thread alone does not make an abrasive safe for use.
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
