Ingersoll Rand 61H150G4 Die Grinder | 61 Pro Series | 1.33 HP | 12000 RPM | 1/4" Collet Size | Side Exhaust

When production grinding calls for faster material removal and access to recessed metal surfaces, the Ingersoll Rand 61H150G4 Die Grinder provides a powerful straight-grinding solution for fabrication shops, foundries, and industrial metalworking facilities. This 61 Pro Series pneumatic grinder features a 1.33 HP (0.99 kW) vane motor and a 15,000 RPM maximum free speed, giving operators the rotational speed needed for grinding, deburring, and finishing with compatible mounted abrasives. Its 1/4-inch collet securely grips appropriately sized accessory shanks, while the side exhaust directs discharged compressed air away from the rear of the tool. The extended straight-body configuration provides additional reach for working inside metal assemblies, around casting features, and in areas where shorter grinders may be difficult to position.

The 61H150G4 incorporates a built-in mist lubricator that delivers oil to the pneumatic motor during operation, along with a motor controller that helps regulate operating speed and a grit rejection system that limits abrasive contamination of internal components. Its metal housing protects during repeated handling in grinding and fabrication environments. Measuring 15.5 inches in length and weighing 4.3 lbs, this model combines an extended working profile with substantial grinding power. The tool requires 40 CFM air consumption at load, a 3/8-inch air inlet, and a 1/2-inch minimum hose size, making adequate compressed air delivery an important consideration when selecting this grinder for production use.

Type: Straight Pneumatic Die Grinder | Model: 61H150G4 | Series: 61 Pro Series | Rated Power: 1.33 HP (0.99 kW) | Maximum Free Speed: 15,000 RPM | Collet Size: 1/4" | Exhaust: Side | Length: 15.5" (393 mm) | Weight: 4.3 lbs (1.9 kg) | Air Consumption at Load: 40 CFM (1,133 L/min) | Air Inlet: 3/8" NPT | Minimum Hose Size: 1/2" (13 mm) | Operating Air Pressure: 90 PSI

Features:

• 1.33 HP vane motor supplies pneumatic power for grinding, deburring, and material removal in production metalworking applications.
• 15,000 RPM maximum free speed supports efficient operation with compatible mounted abrasives and carbide burrs rated for the grinder's operating speed.
• Built-in mist lubricator delivers oil to the pneumatic motor when the tool is operated, helping reduce internal friction and wear.
• Integrated motor controller regulates operating speed to support consistent grinding performance.
• Grit rejection system helps protect internal motor components from abrasive particles commonly encountered during grinding.
• Metal housing provides durability in fabrication facilities, foundries, and other workplaces where tools are exposed to repeated handling and airborne debris.
• Extended-length, low-profile construction provides reach for grinding recessed surfaces and areas obstructed by surrounding components.
• Side exhaust directs discharged air laterally, while the 1/4-inch collet accommodates suitably rated shank-mounted grinding accessories.

Applications:

• Foundry and casting operations: Removing casting flash, grinding accessible internal features, and cleaning metal surfaces after casting.
• Welding and metal fabrication: Blending weld irregularities, smoothing edges, and preparing joints for subsequent finishing operations.
• Steel mills and metalworking facilities: Performing localized material removal, surface cleanup, and component deburring.
• Tool and die shops: Refining machined profiles, removing burrs, and accessing recessed metal features with appropriate carbide burrs.
• Shipyard and heavy equipment fabrication: Grinding welded assemblies and finishing metal components during manufacturing and repair.
• Industrial maintenance and MRO: Cleaning metal parts, removing sharp edges, and preparing component surfaces during machinery refurbishment.

FAQs:

• Q: How does the Ingersoll Rand 61H150G4 differ from the 61H120G4?

  A: The 61H150G4 features a 1.33 HP motor and 15,000 RPM maximum free speed, while the 61H120G4 provides 1.25 HP and 12,000 RPM. Both use a 1/4-inch collet and side exhaust. The higher-speed 61H150G4 consumes 40 CFM at load compared with 37 CFM for the 61H120G4, so accessory speed requirements and available airflow should guide selection.

• Q: What grinding attachments can I use with the 61H150G4?

  A: This grinder uses a 1/4-inch collet for compatible shank-mounted accessories, including suitable carbide burrs and mounted grinding points. Every accessory must be approved for the application and rated for at least 15,000 RPM, with its permitted diameter and overhang limits observed.

• Q: What compressor capacity is required to operate this die grinder?

  A: Ingersoll Rand specifies air consumption of 40 CFM at load, with a 3/8-inch air inlet and 1/2-inch minimum hose size. Select a compressed air system capable of supplying the required airflow at the manufacturer's recommended operating pressure, taking other simultaneously operated air tools into account.

• Q: Does the 61H150G4 have an internal lubrication system?

  A: Yes. The 61 Pro Series includes a built-in mist lubricator that supplies oil to the motor during operation. Follow Ingersoll Rand's recommended lubrication and maintenance procedures rather than assuming the integrated system eliminates periodic servicing.

• Q: Is this grinder appropriate for precision finishing or heavy material removal?

  A: The 61H150G4 is primarily suited to production metalworking tasks such as deburring, weld cleanup, and material removal. It can also perform localized finishing with the correct accessory, but its motor power, size, and operating speed should be considered when selecting a tool for delicate or highly detailed finishing work.

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