Hard brick and dense block punish a general-purpose blade. The MK Diamond MK-414D is the line MK builds for exactly that material: a laser-welded, dry-cutting segmented blade with a 10mm segment height. This is the 18-inch size, .142 inch wide on a 1 inch arbor, part number 140269.
Built for
- Cutting hard brick, pavers and dense concrete block on masonry saws.
- Block walls and hardscape work where a general-purpose blade glazes over and stops cutting.
- Production cutting where the crew needs consistent depth of cut through a full day.
- Contractors replacing a worn blade and matching the arbor already on the saw.
Why a hard-material blade
Diamond blades are matched to material by bond hardness, not by diamond alone. A blade formulated for soft, abrasive material used on hard brick will wear its bond away long before the diamond is used up. Run the reverse combination, a hard bond on abrasive material, and the blade glazes: the bond will not release worn diamond, the face polishes over, and cutting slows to a crawl. Choosing the blade MK builds for hard brick and block is what keeps the cut rate steady and gets the linear footage the blade is capable of.
The laser-welded core is the safety-critical part. Laser welding fuses each segment to the steel core with a far stronger bond than brazing, which is what lets a blade this size be run on a high-speed saw. The 10mm segment height is the usable diamond depth: it is what determines how many cuts you get before the blade is finished.
Specifications
- Part number: 140269
- Manufacturer: MK Diamond
- Model: MK-414D
- Diameter: 18 inches (457mm)
- Width: .142 inch
- Arbor: 1 inch
- Segment height: 10mm
- Construction: laser welded
- Cutting: dry
- Material: hard brick and block
Before you order
Match the arbor first. This blade is bored 1 inch, and MK builds the 18-inch MK-414D in more than one arbor, so ordering by diameter alone is how crews end up with a blade that will not mount. Then confirm your saw is rated for an 18-inch blade and that the guard covers it. Cut with the guard fitted and dust control in place.
Frequently asked questions
What material is this blade for?
Hard brick and dense block. MK builds the MK-414D range specifically for hard masonry rather than as a general-purpose blade.
What are the exact dimensions?
Part 140269 is 18 inches (457mm) in diameter, .142 inch wide, on a 1 inch arbor, with a 10mm segment height.
Will it fit my saw?
It is bored 1 inch. Check the arbor on your saw rather than ordering by diameter alone, and confirm the saw is rated for an 18-inch blade.
Is this one of the high speed blades?
MK marks specific sizes in the MK-414D range as high speed blades, and the 18-inch is not one of them. Run it at the rim speed your saw and the blade label specify.
Is it wet or dry cutting?
It is a dry cutting blade. Use dust control, as cutting masonry dry produces silica dust.
What happens if I use a soft-bond blade on hard brick?
A bond formulated for soft, abrasive material wears away faster than the diamond does, so the blade is consumed long before the diamond is used up.
Discount Cleaning Products is an authorized dealer for this line, with US-based support from people who work with commercial cleaning and construction equipment every day. If you are not sure which size or arbor fits your machine, ask us before you order.
