MK Diamond MK-950D 6-inch Premium Grade Blade for Soft Abrasive Material
The MK Diamond MK-950D is built for the material that quietly destroys general purpose blades: soft, abrasive masonry. MK Diamond rates the MK-950D soft abrasive family for concrete block, soft brick, green concrete, asphalt and other soft abrasive masonry. If a crew has been burning through blades faster than expected on block or green concrete, the bond, not the diamond, is usually the reason, and this is the family MK points at that problem.
Built for these jobs
- Cutting concrete block and soft brick, where an abrasive material chews through a blade bond that was not built for it.
- Cutting green concrete and asphalt, both of which are soft and abrasive and are hard on a general purpose blade.
- Dry cutting on a hand-held saw or grinder where the job is block work rather than hard dense concrete.
- Repair and patch work on masonry that has already proven it eats blades faster than the spec sheet suggested.
Why this blade
The reason a soft material needs a hard bond runs counter to intuition, and MK Diamond spells it out. A diamond blade does not really cut, it grinds, and the bonding matrix holding the diamonds wears away as it works so fresh crystals keep getting exposed. Large particles of soft, abrasive material wear that matrix down far faster than the fine particles that come off hard dense material. So a blade for soft abrasive work needs a tough, hard bond that resists erosion long enough for the exposed diamonds to actually be used. Put a soft-bond general purpose blade into block and the segment erodes away with most of its diamond still in it.
The turbo rim is the second half of the answer. Its serrated profile clears the soft, loose debris that block and green concrete throw off, which is exactly the debris that packs a rim and glazes a blade. It also leaves a cleaner edge than a wide-segment blade, which is worth something on exposed block.
MK Diamond builds this on a high alloy, heat treated steel core, tensioned so it runs true on the spindle, with the rim brazed or laser welded around the periphery. The company designs rims wider than the core they sit on, which gives the clearance that discourages binding and lets material discharge out of the kerf.
Arbor and fit
Part number 150676 is the 7/8-inch to 5/8-inch arbor version of this blade, 6-inch diameter by .080-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-950D Blade for Soft Abrasive Material
- MK Diamond part number: 150676
- Blade diameter: 6-inch (152mm)
- Blade width: .080-inch
- Arbor: 7/8-inch to 5/8-inch
- Rim style: Dry cutting turbo rim, dry cutting
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-950D 6-inch blade made for?
MK Diamond builds the MK-950D soft abrasive family for concrete block, soft brick, green concrete, asphalt and other soft abrasive masonry. The bond is formulated for soft, abrasive material, which wears a blade matrix faster than hard dense material does, so a harder bond is what keeps the segment from disappearing before the diamonds are used up.
What arbor does part number 150676 have?
Part number 150676 is the 7/8-inch to 5/8-inch arbor version, 6-inch diameter by .080-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 6-inch blade diameter against your saw guard and maximum blade capacity, and the saw spindle against the 7/8-inch to 5/8-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.
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-950D 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.
