MK Diamond MK-925D 12-inch Supreme Grade General Purpose Blade
The MK Diamond MK-925D is the blade to reach for when a crew is cutting several masonry materials in the same day and does not want to stop and change blades for each one. MK Diamond rates the MK-925D general purpose family for brick, block, pavers, concrete, granite and general masonry, and that breadth is the point: a mason or hardscape installer sizing brick one hour and trimming block or a paver run the next can leave one blade on the saw. It is a Supreme Grade blade in MK's own grading, the top tier the company applies to this family.
Built for these jobs
- Cutting brick, block and pavers to size on hardscape and masonry crews where the saw moves between materials through the day.
- Trimming concrete and general masonry on repair and remodel work without stopping to swap blades for each material.
- Cutting granite and other dense stone, which MK Diamond lists in this blade's material range.
- Dry cutting on a hand-held or walk-behind saw where dragging a water supply to the cut is impractical.
Why this blade
A segmented turbo rim is a deliberate middle ground. The gullets between segments let air move through the cut and carry debris out, which is what keeps a dry blade's core from heat-soaking on a long pass. The turbo profile keeps more of the rim in contact with the material than wide-open segments do, so the cut face comes off cleaner than a heavily segmented blade will leave it. On brick and pavers, where a rough edge shows in the finished work, that difference is visible.
MK Diamond builds this blade on a high alloy, heat treated steel core. The company's own engineering notes describe the core as tensioned so the stresses of centripetal force are minimized and the blade spins true on the spindle, and the segments are brazed or laser welded around the periphery. That matters more on a dry blade than a wet one, because a dry blade takes its heat without the benefit of water carrying it away.
The practical benefit over a bonded abrasive wheel is consistency. A diamond blade holds its diameter, so the depth of cut on the last brick of the day is the depth of cut on the first. An abrasive wheel shrinks as it works, which is why crews running volume tend to move to diamond even though the sticker is higher.
Arbor and fit
Part number 150673 is the 1-inch arbor version of this blade, 12-inch diameter by .110-inch wide. MK Diamond publishes the same blade in more than one arbor so it can go straight onto the saw a contractor already owns. It is worth matching the part number to the spindle rather than reaching for a reducer bushing: the true arbor size keeps the blade centered, which reduces wobble and vibration and avoids the uneven stress on the core that a poorly fitted bushing introduces.
Specifications
- Manufacturer: MK Diamond Products
- Model family: MK-925D General Purpose Blade
- MK Diamond part number: 150673
- Blade diameter: 12-inch (305mm)
- Blade width: .110-inch
- Arbor: 1-inch
- Rim style: Segmented turbo rim, dry cutting
- Rim height: 10mm
Getting the most out of a dry blade
Dry cutting asks a little discipline. MK Diamond's guidance is to take shallow, intermittent cuts and let the blade free spin out of the cut for several seconds between passes, which moves air across the core and sheds the heat that water would otherwise carry off. Forcing the blade is the common mistake and it costs twice: it loads the saw motor and it overheats the rim, which wears the blade early. Let the blade do the work, confirm the saw's rated speed is at or below the blade's maximum operating speed, and inspect the core and segments for cracks or warping before each session. Dry cutting masonry also generates respirable silica dust, so pair the blade with the dust control and respiratory protection your jobsite requires.
Frequently asked questions
What materials is the MK-925D 12-inch blade made for?
MK Diamond builds the MK-925D general purpose family for brick, block, pavers, concrete, granite and general masonry. It is a general purpose blade, which is the right pick when one saw has to move between several masonry materials in a day rather than staying on one.
What arbor does part number 150673 have?
Part number 150673 is the 1-inch arbor version, 12-inch diameter by .110-inch wide. MK Diamond lists several arbor variants of the same blade, so match the part number to your saw spindle rather than relying on a reducer bushing where you can. Running the true arbor size keeps the blade centered and cuts down on wobble and uneven stress on the core.
Is this a wet or dry cutting blade?
It is a dry cutting turbo rim blade. MK Diamond notes that dry blades need airflow around the blade to keep the steel core from overheating, which is best done with shallow, intermittent cuts and a few seconds of free spinning out of the cut between passes. Water can still be used if the saw is set up for it.
Will it fit my saw?
Check two things: the 12-inch blade diameter against your saw guard and maximum blade capacity, and the saw spindle against the 1-inch arbor on this part number. Also confirm your saw's rated speed is at or below the blade's maximum operating speed before mounting it.
What is the difference between the 12-inch and the 14-inch version?
Only the diameter and the depth of cut. MK Diamond builds the MK-925D general purpose family in both sizes with the same rim design and the same .110-inch width, so the larger blade buys cutting depth and the smaller one costs less and puts less load on the saw.
Discount Cleaning Products is an authorized MK Diamond dealer. MK Diamond Products builds its diamond tooling out of Torrance, California, and we stock the MK-925D line alongside the saws, core bits and masonry accessories that go with it. If you are not certain which diameter or arbor matches your saw, call or email us before you order and we will check the part number against your machine.
