Bosch X-LOCK 4-1/2″ Segment Diamond Blade

Up to 5x faster change-out speed compared to standard 7/8-in. mounts — that’s the bottom line on Bosch’s X-LOCK mounting system. For contractors running angle grinders all day, the audible click confirmation that the blade is securely mounted means no second-guessing whether the blade’s seated properly. The system works with standard locking-nut small angle grinders with 7/8-in. arbor mounts, so switching to X-LOCK doesn’t orphan existing grinders.

This segmented rim blade targets reinforced concrete, cured concrete, solid brick, concrete building blocks / CMU, hard stone, pavers, masonry materials, and general-purpose universal rough cuts. It’s built for aggressive cutting rather than finish work.

X-LOCK Performance and Real-World Speed

The mounting system delivers exactly what contractors need: speed without compromising security. No losable parts eliminates the need for spanners or flange nuts. Push the blade onto the grinder until the click sounds — done. Pull the wheel-release lever on the X-LOCK grinder to release the blade instantly.

Exceptional durability and edge retention shows up consistently in field use, with contractors describing it as ‘cutting like butter’. The steel core minimizes blade wobble for straighter, smoother cuts and longer blade life — critical when cutting pavers or CMU blocks where accuracy affects the fit.

Specification	Value
Diameter	4-1/2 inches
Mount Type	X-LOCK
Arbor Compatibility	7/8 inch (22 mm) backward compatible
Rim Design	Segmented rim
Operation Mode	Wet and Dry use

Cutting Applications and Material Compatibility

The segmented rim design handles Montana’s construction materials without complaint. Optimized diamond pattern designed for fast cutting and extended service life means fewer blade changes during foundation work or hardscape projects.

For dust control on jobsites, the blade works with Bosch GA50DC 4-1/2 in. to 5 in. Dust Collection Attachments — increasingly important as contractors face stricter silica dust regulations. The wet and dry operation modes provide flexibility depending on jobsite constraints and material requirements.

Field performance backs up the specifications. Significant time savings due to the X-LOCK system translates directly to labor cost reduction — the kind of improvement that matters when bidding competitive jobs.

FAQ

Does the X-LOCK blade work with standard angle grinders? Yes. Features backward compatibility with standard 7/8-inch grinders, unlike many proprietary mounting systems. Universal Fit: Can also be used on standard grinders with a 7/8-inch arbor using traditional mounting hardware.

What’s the actual speed improvement with X-LOCK? Up to 5 times faster than conventional 7/8-inch arbor systems. The time savings comes from eliminating the wrench work and thread spinning required with standard mounting nuts.

What materials can this blade cut? Reinforced concrete, cured concrete, solid brick, concrete building blocks / CMU, hard stone, pavers, masonry materials, general-purpose universal rough cuts. The segmented rim design prioritizes cutting speed over finish quality.

What’s included with the blade? 1 x 4-1/2-inch X-LOCK Segmented Diamond Blade. No mounting hardware needed for X-LOCK grinders.

What warranty coverage does Bosch provide? Lifetime warranty against manufacturer’s defects.