Makita B-21244 Abrasive Grinding Wheel 125 x 3.2 x 22.23 mm A36T

The Makita B-21244 abrasive grinding wheel is a professional-grade accessory engineered for high-performance metal grinding and surface preparation. Designed for use with 125 mm angle grinders, this wheel features a robust construction that ensures consistent material removal and durability in demanding industrial and construction environments. Its A36T specification provides an optimal balance between grinding speed and wheel life, making it a reliable choice for various metalworking applications.

Advantages

This grinding wheel stands out due to its high-quality abrasive grain composition, which facilitates efficient and controlled grinding on various metal surfaces. The 3.2 mm thickness provides the necessary structural integrity to withstand heavy-duty use while maintaining a steady performance profile. Its precise engineering ensures minimal vibration during operation, contributing to better control and reduced operator fatigue during extended work sessions.

Suitable for

• Grinding and smoothing metal welds
• Removing rust and surface oxidation
• Deburring metal edges
• General surface preparation for painting or coating

When it may not be suitable

This wheel is specifically designed for grinding tasks and should not be used for cutting operations, as its thickness and abrasive structure are not optimized for thin-profile cutting. It is also not intended for use on non-metallic materials such as wood, plastic, or masonry, as these materials may clog the abrasive surface or cause premature wear.

Key specifications

• Diameter: 125 mm
• Thickness: 3.2 mm
• Bore size: 22.23 mm
• Maximum rotational speed: 12250 rpm
• Cutting speed: 80 m/s
• Abrasive specification: A36T

How to use

Ensure the angle grinder is disconnected from the power source before mounting the wheel. Place the grinding wheel onto the spindle, ensuring it is centered correctly on the 22.23 mm bore, and secure it firmly with the locking nut. Once mounted, verify that the wheel rotates freely without obstruction. Always wear appropriate personal protective equipment, including safety glasses and gloves, before starting the tool. Apply steady, even pressure during the grinding process, allowing the abrasive material to do the work without forcing the tool.

What to consider before purchase

• Verify that your angle grinder is compatible with 125 mm diameter discs.
• Ensure the spindle size of your tool matches the 22.23 mm bore requirement.
• Check that your grinder's maximum RPM rating is equal to or higher than the wheel's 12250 rpm limit.

Usage recommendations

Always inspect the grinding wheel for cracks or damage before each use. Never use a wheel that has been dropped or shows signs of structural compromise. Store the wheels in a dry, cool place to maintain their abrasive integrity.