Ingersoll Rand 444 Extended Angle Grinder | 0.9 HP | 4" Wheel Diameter | 14000 RPM

When weld preparation, surface grinding, and repetitive metalworking tasks call for extended reach, the Ingersoll Rand 444 Extended Angle Air Grinder combines a 0.9 HP (0.67 kW) pneumatic motor with a 14,000 RPM maximum free speed for efficient material removal. Built for 4-inch Type 27 grinding wheels, this air-powered angle grinder features an extended angle head and low-profile design that improve access around welded assemblies, structural components, and restricted work areas. Its 3/8"-24 spindle provides the specified mounting connection for compatible abrasive accessories, while the compact grinding head helps operators position the wheel accurately during repetitive fabrication and finishing operations.

The Ingersoll Rand 444 also emphasizes handling and productivity during extended grinding sessions. A narrow composite handle accommodates different hand sizes, while the auxiliary handle can be positioned for left- or right-handed operation to improve control. The 8-position adjustable swivel guard with 126-degree adjustment range allows users to reposition the guard as the working angle changes, and the spindle lock simplifies abrasive replacement. With a 10.57-inch overall length and 3.7 lb tool weight, the grinder offers a practical balance of reach, maneuverability, and control for welding shops, manufacturing facilities, and industrial maintenance teams.

Type: Extended Angle Air Grinder | Model: 444 | Rated Power: 0.9 HP (0.67 kW) | Max Free Speed: 14,000 RPM | Wheel Diameter: 4" (101 mm) | Wheel Type: Type 27 | Spindle Size: 3/8"-24 | Weight: 3.7 lbs (1.65 kg) | Length: 10.57" (268 mm) | Air Inlet: 1/4" | Minimum Hose Size: 3/8" | Air Consumption at Free Speed: 34 SCFM | Air Consumption at Load: 29 SCFM | Vibration: 6.89 m/s² | Sound Pressure: 92.2 dB(A)

Features:

• Powerful 0.9 HP pneumatic motor operates at 14,000 RPM maximum free speed to support repeated grinding and material removal tasks.
• Extended angle head provides additional reach around workpieces and into areas where conventional grinder configurations may be difficult to position.
• Low head height improves accessibility near surrounding components while contributing to a compact grinding-head profile.
• Narrow composite handle provides a comfortable gripping surface and accommodates operators with smaller hands during extended use.
• Auxiliary handle supports left- or right-handed positioning, allowing operators to select a suitable grip for improved control.
• 8-position, 126-degree adjustable swivel guard allows convenient guard repositioning as the grinding approach changes.
• Integrated spindle lock simplifies abrasive wheel changes and reduces the need for additional spindle-holding steps.
• Durability-focused construction supports repetitive welding and grinding operations, with manufacturer-reported service-life improvements compared with a competing tool in its class.

Applications:

• Welding and metal fabrication: Grinding weld beads, preparing metal joints, and removing excess material from fabricated steel components.
• Industrial manufacturing: Performing repetitive grinding and surface preparation tasks on metal parts and welded assemblies.
• Plant maintenance and MRO: Removing surface irregularities and preparing metal equipment components for repair or refurbishment.
• Structural steel fabrication: Blending weld areas and grinding accessible edges and joints on structural metal assemblies.
• Automotive and equipment repair: Grinding welded repair sections and preparing metal surfaces in workshops where a pneumatic angle grinder is appropriate.

FAQs:

• Q: What grinding wheel size does the Ingersoll Rand 444 use?
  A: The 444 is specified for 4-inch Type 27 grinding wheels with a 3/8"-24 spindle connection. Always verify the wheel's mounting compatibility, thickness, and maximum operating speed before installation. Ingersoll Rand specifies a maximum wheel thickness of 1/4 inch (6.4 mm).
• Q: Can the Ingersoll Rand 444 reach confined grinding areas?
  A: Yes. Its extended angle head and low head height provide improved access around obstructions, welded joints, and recessed work areas. Actual clearance depends on the workpiece and installed abrasive wheel.
• Q: How much compressed air does the Ingersoll Rand 444 require?
  A: The manufacturer specifies 34 SCFM at free speed and 29 SCFM at load, with a 1/4-inch air inlet and 3/8-inch minimum hose size. Confirm that the compressor, air supply pressure, and air delivery system meet the grinder's operating requirements before use.
• Q: Can the guard and auxiliary handle be adjusted?
  A: The grinder includes an 8-position swivel guard with a 126-degree adjustment range. Its auxiliary handle supports left- or right-handed positioning, allowing operators to configure the tool for different grinding approaches.
• Q: What makes the 444 suitable for repetitive welding work?
  A: The 0.9 HP motor, extended angle-head configuration, narrow composite handle, and spindle lock support repeated material removal and abrasive changes. These features are particularly useful when grinding multiple welded assemblies throughout a work shift.

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

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