Ingersoll Rand 3445MAX Pneumatic Angle Grinder | 0.88 HP | 12,000 RPM | 5/8" - 11 Thread | Rear Exhaust

Ingersoll Rand 3445MAX Pneumatic Angle Grinder delivers controlled material removal through a 0.88 HP air motor operating at 12,000 RPM free speed. Part of the MAX Series, this grinder is configured for 4.5-inch grinding wheels and features a 5/8"-11 threaded spindle for compatible abrasive accessories. Its internal governor helps maintain motor speed under load, supporting consistent grinding performance as pressure is applied to the workpiece. The compact right-angle configuration provides access to metal edges, weld joints, and fabrication surfaces during automotive repair, construction, and industrial maintenance operations.

The 3445MAX combines a lightweight composite housing with an enhanced grip design and ergonomic auxiliary handle for improved control during extended grinding operations. Weighing 3.44 lbs and measuring 9.6 inches in length, the tool provides a practical balance of motor power and handling characteristics. A built-in lubricating wick supplies lubrication to the bevel and pinion gear set, helping protect the internal angle drive components. The variable-speed lever allows operators to adjust power delivery, while the rear exhaust directs discharged air away from the immediate grinding area. With a 1/4-inch NPTF air inlet, 3/8-inch recommended hose size, and 90 PSI operating pressure, this pneumatic angle grinder can be integrated into a properly sized compressed-air system.

Type: Pneumatic Angle Grinder | Model: 3445MAX | Series: MAX Series | Power: 0.88 HP | Free Speed: 12,000 RPM | Wheel Size: 4.5 in. | Spindle Thread: 5/8"-11 | Weight: 3.44 lbs | Length: 9.6 in. | Width: 5.6 in. | Height Over Spindle: 2.8 in. | Side-to-Center Distance: 1.3 in. | Air Inlet: 1/4" NPTF | Recommended Hose Size: 3/8 in. | Average Air Consumption: 10 CFM | Air Consumption at Load: 41 CFM | Sound Level at Free Speed: 79.6 dBA | Exhaust: Rear | Operating Pressure: 90 PSI

Features:

• 0.88 HP pneumatic motor delivers 12,000 RPM free speed for grinding and material removal applications.
• 4.5-inch wheel configuration supports compatible grinding and cutting accessories for metalworking operations.
• Internal governor maximizes speed under load, helping maintain the rate of material removal during grinding.
• Built-in lubricating wick improves lubrication to the bevel and pinion gear set, helping extend the operating life of the angle gear assembly.
• Lightweight composite housing reduces overall tool weight while supporting maneuverability during repeated grinding tasks.
• Enhanced grip design and ergonomic auxiliary handle provide additional handling control during operation.
• Variable-speed lever allows operators to regulate power and speed delivery according to the grinding task.
• Rear exhaust directs discharged air away from the grinding area, while the 5/8"-11 threaded spindle accommodates suitable abrasive mounting configurations.

Applications:

• Metal fabrication: Removing weld buildup, smoothing fabricated edges, and preparing metal surfaces for additional processing.
• Automotive repair and bodywork: Grinding metal panels, cleaning welded sections, and preparing surfaces during vehicle repairs.
• Industrial maintenance: Removing unwanted material, blending repaired surfaces, and preparing metal components for maintenance work.
• Welding operations: Dressing weld beads and cleaning joints using appropriately rated grinding accessories.
• Construction and workshop metalworking: Grinding and cutting compatible metal materials with the correct abrasive wheel and protective guard.

FAQs:

• Q: What is the power and maximum free speed of the Ingersoll Rand 3445MAX?
  A: The 3445MAX has a 0.88 HP air motor with a maximum free speed of 12,000 RPM. Its internal governor helps sustain operating speed under load for consistent grinding performance.
• Q: What grinding wheel size does the 3445MAX use?
  A: This model is configured for 4.5-inch wheels and uses a 5/8"-11 threaded spindle. Any abrasive accessory must match the tool's mounting arrangement, intended application, and speed rating.
• Q: What are the air supply requirements for the 3445MAX?
  A: The manufacturer lists 10 CFM average air consumption and 41 CFM air consumption at load, with performance figures measured at 90 PSI. The air supply should be capable of meeting the tool's requirements during operation.
• Q: How is the 3445MAX different from the Ingersoll Rand 345MAX?
  A: The primary distinction is wheel capacity. The 3445MAX is configured for 4.5-inch wheels, while the 345MAX accommodates 5-inch wheels. Both have a 0.88 HP motor, 12,000 RPM free speed, and 5/8"-11 threaded spindle.
• Q: What does the built-in lubricating wick do?
  A: The lubricating wick improves lubrication to the bevel and pinion gear set inside the angle head. This helps protect the internal gearing during repeated grinding operations and complements the manufacturer's routine maintenance requirements.

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