Introduction
This manual provides essential information for the safe and effective use of the Forney 71883 Grinding Wheel. This grinding wheel is designed for metal grinding applications, featuring a 5/8-inch-11 threaded arbor, Type 27 design, and A24R grit for efficient material removal. Please read this manual thoroughly before operation and retain it for future reference.

Figure 1: Front view of the Forney 71883 Grinding Wheel, showing the label with specifications and the threaded arbor.
Safety Information
Always prioritize safety when working with grinding wheels. Failure to follow safety precautions can result in serious injury. Refer to the official Safety Information PDF for comprehensive guidelines:
- Wear appropriate Personal Protective Equipment (PPE), including safety glasses, face shield, gloves, and hearing protection.
- Ensure the grinding wheel's maximum RPM rating (6500 RPM) is compatible with your angle grinder's speed.
- Inspect the wheel for damage (cracks, chips) before each use. Do not use damaged wheels.
- Mount the wheel securely on the angle grinder's 5/8-inch-11 threaded arbor.
- Maintain a firm grip on the grinder and keep bystanders clear of the work area.
- Avoid applying excessive pressure, which can cause wheel breakage or grinder kickback.
- Grind only on the edge of the wheel for grinding applications.
For detailed safety instructions, please download the official Safety Information document: Forney Grinding Wheel Safety Information (PDF).
Setup
- Unpacking: Carefully remove the grinding wheel from its packaging. Inspect for any visible damage during shipping.
- Tool Compatibility: Verify that your angle grinder is compatible with a 9-inch diameter grinding wheel and has a 5/8-inch-11 threaded arbor. Ensure the grinder's maximum RPM does not exceed the wheel's maximum RPM of 6500.
- Mounting the Wheel:
- Disconnect the angle grinder from its power source.
- Clean the arbor and mounting flanges of the grinder.
- Thread the grinding wheel onto the grinder's arbor, ensuring it is seated firmly and squarely. The 5/8-inch-11 threaded arbor on the wheel is designed for direct attachment.
- Tighten the wheel securely using the appropriate wrench, but do not overtighten.
- Work Area Preparation: Ensure your work area is well-lit, clear of obstructions, and free from flammable materials.

Figure 2: Side profile of the grinding wheel, highlighting its 1/4-inch thickness and robust construction.
Operating Instructions
- Pre-Operation Check: Before starting, double-check that the wheel is securely mounted and that all safety guards on your angle grinder are in place and functioning correctly.
- Power On: Connect the angle grinder to its power source. Hold the grinder firmly with both hands.
- Starting the Grind: Allow the wheel to reach full operating speed before making contact with the workpiece.
- Grinding Technique:
- Apply light, consistent pressure. Let the wheel do the work.
- Move the grinder smoothly across the workpiece to ensure even material removal and prevent grooving.
- Maintain a stable stance and control the grinder at all times.
- Avoid grinding on the flat side of the wheel for general grinding tasks, as this wheel is designed as a Type 27 depressed center wheel for edge grinding.
- Cooling: For prolonged grinding, allow the wheel and workpiece to cool periodically to prevent overheating and premature wear.
- Shut Down: Release the grinder's trigger and allow the wheel to come to a complete stop before setting the tool down. Disconnect from power after use.

Figure 3: Detailed view of the grinding wheel's label, showing manufacturing information and safety symbols.
Maintenance
- Inspection: Regularly inspect the grinding wheel for signs of wear, cracks, chips, or other damage. Replace the wheel immediately if any damage is observed.
- Storage: Store grinding wheels in a dry, cool place, away from direct sunlight and extreme temperatures. Store them flat or on a rack to prevent warping or damage.
- Cleaning: Keep the wheel and grinder free from dust and debris. Use compressed air to clean the grinder's vents.
- Arbor Maintenance: Ensure the threaded arbor remains clean and free of burrs to allow for proper mounting.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Excessive Vibration |
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| Poor Grinding Performance |
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| Wheel Breakage |
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Figure 4: Rear view of the grinding wheel, illustrating the 5/8-inch-11 threaded arbor for secure attachment.
Specifications
| Attribute | Detail |
|---|---|
| Model Number | 71883 |
| Brand | Forney |
| Size | 9-Inch (Diameter) |
| Item Thickness | 1/4-Inch |
| Arbor Thread | 5/8-Inch-11 Threaded |
| Type | Type 27 (Depressed Center) |
| Grit Material | Aluminum Oxide (A24R) |
| Maximum Rotational Speed | 6500 RPM |
| Compatible Devices | Angle Grinder |
| Construction Type | Grinding |
| Item Weight | 1 pound |
| UPC | 032277718838 |
| Country of Origin | Taiwan |
Warranty and Support
Specific warranty information for the Forney 71883 Grinding Wheel is not provided in the product details. For warranty claims or technical support, please contact Forney customer service directly or visit their official website. Always retain your proof of purchase.
For additional assistance, you may visit the Forney Store on Amazon.





