The X-LOCK mounting system enables blade changes up to 5x faster than conventional methods while eliminating losable parts like spanners or flange nuts. For contractors cutting concrete, masonry, and stone materials daily, this translates to less downtime fumbling with wrenches and more billable hours on the job.
This 5-inch segmented diamond blade features reinforced concrete, cured concrete, solid brick, CMU blocks, hard stone, and paver cutting capabilities. At 12,250 RPM maximum speed with a 0.075-inch blade thickness and steel core construction, it handles Montana’s commercial construction demands — from CMU block foundations to hardscaping projects.
X-LOCK Technology Performance
The blade change that used to take minutes now takes seconds — up to 5x faster than standard 7/8-inch mounts. Match the X-LOCK mounting groove with the grinder’s socket and press until an audible click confirms secure mounting. No more hunting for the right wrench size. No more dropped flange nuts rolling under the jobsite trailer.
Removal works just as fast — pull the wheel-release lever on the X-LOCK grinder to release the blade instantly. The system shines when switching between different blade types throughout the day. Cut rebar with a metal blade, swap to this diamond blade for concrete, then switch to a grinding wheel — all without tools.
The blade maintains backward compatibility with standard 7/8-inch arbor grinders using traditional mounting hardware. Smart move by Bosch. Contractors don’t need to replace their entire grinder fleet to start using X-LOCK blades. Buy one X-LOCK grinder for the crew, keep the old grinders as backups.
Cutting Performance and Applications
The segmented rim design paired with industrial-grade diamond segments and a steel core delivers the stability needed for clean cuts. That steel core minimizes blade wobble for straighter, smoother cuts and longer blade life — critical when cutting expensive materials where precision matters.
| Specification | Value |
|---|---|
| Diameter | 5 inches (127 mm) |
| Maximum Speed | 12,250 RPM |
| Blade Thickness | 0.075 in (1.9 mm) |
| Weight | 0.34 lbs (0.15 kg) |
| Operation Mode | Wet and Dry use |
| Arbor Compatibility | X-LOCK and 7/8 inch (22 mm) |
The blade cuts through reinforced concrete, cured concrete, solid brick, concrete building blocks/CMU, hard stone, pavers, and general masonry materials. That covers 90% of what Montana contractors encounter — from foundation work to hardscaping installations. The 1-1/2 inch cutting depth handles standard masonry units without requiring multiple passes.
Professional contractors praise the fast cutting speed, with multiple users describing it as ‘cutting like butter.’ The blade maintains exceptional durability and edge retention even under heavy use. At an average 4.5-star rating across 56 reviews, field performance backs up the specs.
The Bottom Line
Bosch backs the blade with a lifetime warranty against manufacturer’s defects. No California Prop 65 warning required, manufactured in Indonesia. The blade includes just one 5-inch X-LOCK Segmented Diamond Blade per package.
For contractors who value time over initial cost, the X-LOCK system delivers measurable productivity gains. The blade itself performs solidly across standard masonry materials. Compatible with the Bosch GA50DC 4-1/2 in. to 5 in. Dust Collection Attachments for indoor cutting where dust control matters.
Not revolutionary cutting performance — just solid diamond blade execution paired with genuinely faster mounting. For crews switching between multiple blade types daily, those saved minutes add up to real money. For occasional users happy with their current mounting system, the standard diamond blade performance doesn’t justify switching platforms.
Frequently Asked Questions
Q: Will this blade work on my existing angle grinder? Yes, the blade features backward compatibility with standard 7/8-inch arbor mounts. You can use it on traditional grinders with standard mounting hardware, though you’ll lose the quick-change benefits of the X-LOCK system.
Q: What materials can I cut with this blade? The segmented design handles reinforced concrete, cured concrete, solid brick, concrete building blocks (CMU), hard stone, pavers, and general masonry materials for universal rough cuts.
Q: Do I need water when cutting? The blade operates in both wet and dry conditions. Wet cutting extends blade life and reduces dust, but dry cutting works fine for quick jobs.
Q: What’s the actual time savings with X-LOCK? Bosch claims up to 5x faster change-out speed compared to standard 7/8-inch mounts. Real-world savings depend on how often you switch blades, but figure 30 seconds versus 2-3 minutes per change.
Q: How thick can this blade cut? The blade provides 1-1/2 inches of cutting depth, sufficient for standard masonry units and pavers without multiple passes.
Ready to Get Started?
Our tools specialists can help you find the right Bosch products for your project.
More from Bosch
Explore All Bosch Products
We carry Bosch across all 11 Montana and Idaho stores.
