Twenty-four inches is the size most concrete cutting contractors settle on when a 14-inch blade will not reach and a 30-inch is more saw than the job needs. This is MK Diamond's Premium Grade blade for cured concrete in that diameter - laser welded, 12mm segment, 1-inch arbor, rated Better on cured concrete in MK's published application chart, and sized for the 8 to 20 horsepower flat saws that do most trench, joint and demolition-layout work.
Built for
- Flat sawing cured slabs, roadway and bridge deck for trench, utility and demolition layout.
- Cutting control and expansion joints where the slab has already gained strength.
- Squaring and removing failed sections of sidewalk, curb, apron and warehouse floor.
- Concrete cutting contractors and municipal crews running self-propelled or push flat saws.
- Rental fleets stocking a blade that matches the 8 to 20-horsepower saws in the yard.
Use Cases
MK Diamond ranks its wet cured-concrete blades in three tiers and publishes exactly where each one belongs. On cured concrete the MK-500 is rated Good, the MK-505 Better and the MK-525 Best. The MK-505 is the Better blade in that chart.
Aggregate is what should decide the tier. MK recommends the MK-505 for medium-hard aggregate with non-abrasive sand, and marks it not recommended where the aggregate is hard or the sand is abrasive - both of which route to the Supreme Grade MK-525. If you are cutting an unfamiliar mix, that is a question worth asking before the blade goes on the saw.
Why segment height and horsepower decide your cost per foot
Segment height is the spec that actually sets usable life. Across MK's cured-concrete line the segment grows from 10mm on the MK-500 to 12mm on the MK-505 to 15mm on the MK-525, and every additional millimeter is cutting you have not paid for twice. Contractors who track this talk about cost per foot rather than sticker price, and it is the reason a shop will run an expensive blade on production work and a cheap one on the occasional cut.
Horsepower matching matters just as much. MK publishes an 8 to 20 hp band for the MK-505. An underpowered saw lugs and glazes the blade instead of cutting; an oversized saw burns through a blade built for a lighter machine. Match the blade to the saw you actually own and both last longer.
This is a wet blade. Keep water on it, use step-down passes rather than one deep plunge, and keep the blade out of the sub-base where slurry will undercut the core beneath the segments.
Specifications
- Model: MK Diamond MK-505, Premium Grade for cured concrete
- Manufacturer part number: 133884
- Diameter: 24-inch (610mm)
- Width (kerf): .187-inch
- Arbor: 1-inch
- Segment height: 12mm
- Horsepower range: 8 to 20 hp
- Construction: laser welded
- Cutting method: wet only
- MK application rating on cured concrete: Better
- Available in this family: 12-inch through 36-inch
Frequently asked questions
How deep will a 24-inch blade cut?
Usable depth is roughly a little under half the blade diameter once the arbor and blade guard are accounted for, and the exact figure depends on your saw. Check your saw's published depth-of-cut rating for a 24-inch blade rather than assuming.
MK-505 or MK-525 for my slab?
MK rates the 505 Better and the 525 Best on cured concrete. The deciding factor is aggregate: the 505 for medium-hard aggregate with non-abrasive sand, the 525 for hard aggregate or abrasive sand. MK marks the 505 not recommended in those harder conditions.
What horsepower saw does this fit?
MK publishes an 8 to 20 horsepower range for the MK-505 family, which covers most push and self-propelled flat saws. Matching the blade to the saw protects both - an underpowered saw lugs and glazes the blade.
Does it need water?
Yes, this is a wet-cutting blade. Keep the water volume up, cut in step-down passes rather than one deep plunge and stay out of the sub-base, where slurry undercuts the core beneath the segments.
Why does segment height matter when comparing blades?
Segment height is the material you actually get to consume. MK's cured-concrete line steps from 10mm on the MK-500 to 12mm on this MK-505 to 15mm on the MK-525. Contractors who buy on cost per foot rather than sticker price are usually buying segment height.
Discount Cleaning Products is an authorized MK Diamond dealer. Blades ship direct from stocking inventory, orders are handled by a US-based team that works with contractor and municipal purchasing every day, and we can help confirm arbor, kerf and horsepower against your saw before you order.
