The MK-625W is MK Diamond's Supreme Grade laser-welded blade for cutting asphalt over concrete, and this is the 32-inch size, part number 151686. Paving contractors and road crews use a 32-inch blade on walk-behind saws when they need depth: full-depth cuts through an overlay and into the concrete below. The 0.187-inch kerf gives the large core the stiffness it needs to run true at that diameter. MK designs the MK-625W for wet cutting on saws in the 8 to 20 horsepower range.
Use cases
- Deep asphalt overlay cuts. Full-depth cuts through asphalt laid on a concrete base.
- Road and highway repair. Cutting out failed sections for replacement.
- Utility trenching. Opening long straight lines for pipe and cable.
- Airport and lot work. Cutting joints in large paved areas.
- Walk-behind saw fleets. A 32-inch option for contractors running large blades.
Specifications
- Diameter: 32 inches (813 mm)
- Blade width (kerf): 0.187 inch
- Arbor: 1 inch
- Segment height: 12 mm
- Construction: Laser welded
- Grade: Supreme
- Recommended power: 8 to 20 hp
- MK part number: 151686
Fits
MK lists the MK-625W for equipment in the 8 to 20 horsepower range. The 32-inch 151686 has a 1-inch arbor. Verify that your saw's maximum blade diameter and guard accommodate a 32-inch blade before ordering.
Frequently asked questions
What is the MK-625W designed to cut?
MK designs it as a Supreme Grade laser-welded blade for asphalt over concrete, run wet.
What size saw is needed for a 32-inch blade?
You need a saw whose guard and blade shaft are rated for a 32-inch blade with a 1-inch arbor. Check the saw's maximum diameter.
How deep can a 32-inch blade cut?
Cutting depth depends on the saw and flange size. A larger diameter allows a deeper cut, but confirm the depth rating with your saw manufacturer.
Should I run it wet?
MK designs the MK-625W for wet cutting. Water cools the blade, controls dust and keeps the segments cutting.
The blade stopped cutting but the segments still look tall. What happened?
That is glazing. The bond has smeared over the diamonds, usually from heat, too much feed pressure or a blade that does not suit the material. Dress the blade by cutting an abrasive material such as a concrete block to re-expose the diamond, and ease off the feed.
MK Diamond Products is an American diamond-tool manufacturer whose family business traces back to 1868, when Joseph Musto founded the Musto Steam Marble Mill in San Francisco. Discount Cleaning Products is an authorized MK Diamond dealer and stocks MK blades and profiling tools alongside its surface preparation line, with US-based order support if you need help matching a blade to your saw.
