Part number 130252 is the 14-inch MK-500, MK Diamond's standard-grade wet cutting blade for cured concrete, at 0.125 inch kerf on a 1-inch arbor. Crews step up to the 14-inch from the 12 for one practical reason: depth. The extra diameter buys roughly another inch of cut, which is what turns a two-pass cut on a typical 4 to 5 inch slab into a single pass.
That matters more than it sounds. A second pass is not just double the saw time, it is a second chance to wander off the line and a second dose of slurry to manage. On a long control joint run across a warehouse floor, cutting full depth in one pass is most of the day's productivity.
Built for
- Full-depth control and contraction joints in cured slabs of 4 to 5 inches
- Trenching and utility layout cuts in floors, pavement and pads
- Demolition perimeter cuts where the patch depends on a clean edge
- Concrete contractors and rental fleets on 5 to 12 horsepower walk-behind flat saws
- Municipal crews on sidewalk, curb, apron and slab repair
Standard grade, cured concrete, and why the bond decides the cost
A concrete blade earns or loses its price on bond match, not on diameter. Cured concrete is hard and comparatively non-abrasive: it dulls diamonds without wearing the matrix that holds them. A blade meant for green or abrasive material has a hard bond that hangs on to those dull diamonds, and the result is glazing, heat and a blade riding in the cut making no progress. The MK-500 bond is formulated to erode at the rate cured aggregate dulls diamonds, keeping sharp edges at the surface. If a blade in service does glaze, running it briefly through soft brick or a dressing stone will usually restore the cut.
Ordering by three numbers, not one
MK offers the 14-inch MK-500 in three kerfs on the same 1-inch arbor: 0.125 inch is 130252, 0.250 inch is 135095 and 0.375 inch is 153256. Wider kerf means a wider joint and more material removed, which costs power and speed. Specify diameter, width and arbor together. Segment height across the MK-500 series is 10mm regardless of size.
Specifications
- Part number: MK Diamond 130252
- Series: MK-500, standard grade for cured concrete
- Diameter: 14 inches, 356mm
- Width or kerf: 0.125 inch
- Arbor: 1 inch
- Segment height: 10mm
- Construction: laser welded, segmented
- Horsepower range: 5 to 12 hp
- Cutting method: wet
Frequently asked questions
How much deeper does a 14-inch blade cut than a 12-inch?
Roughly an inch more, since cut depth is about half the diameter minus the arbor and guard clearance. That is often the difference between a single pass and a two-pass cut on a 4 to 5 inch slab, which is the usual reason a crew moves up from 12-inch.
What is the difference between 130252, 135095 and 153256?
Kerf. All three are 14-inch MK-500 blades on a 1-inch arbor. The 130252 is 0.125 inch, the 135095 is 0.250 inch and the 153256 is 0.375 inch. Order the widest kerf the joint actually requires, because a wider blade demands more power and cuts slower.
Will this blade work on asphalt?
It is not the right choice. Asphalt is soft and highly abrasive and needs a hard-bonded blade such as MK's MK-700W series. A cured concrete bond in asphalt wears away far too fast to be economical.
What saw does it belong on?
MK publishes a 5 to 12 horsepower range for the MK-500 series, which covers most walk-behind flat saws. Underpowered saws make the blade polish rather than cut and shorten its life.
How should segment life be judged?
By measuring remaining segment height against the 10mm the segments start at. Linear footage varies too much with aggregate hardness to be a reliable gauge.
Discount Cleaning Products is an authorized dealer for this line, with US-based product support from people who sell this equipment every day. Call or email before you order if you are unsure about fitment, sizing or which grade suits your work, and we will check it against the manufacturer specification rather than guess.
