Bosch Expert for Metal R444 X-LOCK Fiber Disc 115 mm Grain 120

The Bosch Expert for Metal R444 X-LOCK Fiber Disc 115 mm with 120 grit is a professional-grade abrasive tool engineered for high-performance metalworking. Designed for use with X-LOCK angle grinders, this fiber disc offers a secure and rapid mounting solution that eliminates the need for traditional locking nuts or wrenches. Its robust construction ensures reliable material removal and consistent surface finishing, making it an essential component for metal fabrication and repair tasks.

Advantages

The primary benefit of this fiber disc is the integration of the X-LOCK system, which significantly reduces downtime during abrasive changes by allowing for tool-free mounting. The high-quality abrasive grain provides excellent durability and a uniform scratch pattern, which is critical for achieving professional results on various metal surfaces. Its design promotes efficient heat dissipation and resistance to clogging, ensuring a longer service life even during demanding grinding operations.

Suitable for

• Grinding and smoothing metal surfaces
• Deburring sharp edges on metal components
• Surface preparation prior to welding or painting
• Removing rust and oxidation from metal parts

When it may not be suitable

This disc is specifically optimized for metal applications and may not provide optimal performance on wood, plastic, or masonry materials. It is intended for use exclusively with X-LOCK compatible angle grinders and cannot be mounted on standard angle grinders with traditional spindle systems.

Key specifications

• Diameter: 115 mm
• Grit size: 120
• Mounting system: X-LOCK
• Application: Metalworking

How to use

To install the disc, align the fiber disc with the X-LOCK interface on the angle grinder head and press it down until it clicks into place. Ensure the disc is securely locked before starting the tool. During operation, maintain a consistent angle and apply moderate pressure to the workpiece to allow the abrasive grain to perform effectively. To remove the disc, simply pull the release lever on the grinder, and the disc will disengage automatically.

What to consider before purchase

• Verify that your angle grinder is equipped with the X-LOCK mounting system
• Ensure the 115 mm diameter is compatible with your grinder's safety guard
• Select the appropriate grit size for your specific surface finish requirements

Usage recommendations

Always wear appropriate personal protective equipment, including safety goggles, gloves, and a dust mask, when operating power tools. Inspect the disc for any signs of damage before each use and replace it if it shows excessive wear or structural defects.