Part number 151934 is MK Diamond's 8-inch V-segment crack chaser blade in the .375-inch width. Crack chasers are used to rout and widen existing cracks in concrete and asphalt so that the crack can be cleaned out and filled properly. Concrete repair crews, sealing contractors and municipal maintenance departments use them ahead of caulking or resealing work, because a routed crack takes and holds sealant far better than a raw one.
Specifications
- MK Diamond part number: 151934
- Blade type: V-segment crack chaser
- Diameter: 8-inch (203mm)
- Width: .375-inch
- Arbor: 1-inch with drive pin hole
- Segment height: 13mm
- Cutting method: dry
How the V-segment works
MK Diamond describes the V-segment design as giving a shape that fits into the crack for cleaning and repair, which is what lets the blade follow and widen an existing crack rather than cutting a fresh straight kerf. MK publishes these as long-lasting dry cutting blades intended to cut down resealing time. The .375-inch width listed here is the mid-width in the line, with .250-inch and .500-inch also published in the same 8-inch diameter.
Fits
The important detail on this part is the arbor. 151934 has a 1-inch arbor with a drive pin hole, which is what MK's crack chasing saw requires. MK publishes a separate 8-inch .375-inch blade with a 7/8-inch to 5/8-inch arbor and explicitly notes that the plain-arbor version does not fit the crack chasing saw. Check whether your saw drives the blade through a pin before ordering, and match the arbor accordingly.
Buying from Discount Cleaning Products
Discount Cleaning Products supplies concrete surface preparation and repair consumables to contractors across the United States. We sell genuine manufacturer parts, so this blade arrives under the MK Diamond part number listed above. If you are not sure which arbor your crack chasing saw takes, contact us with the machine model before ordering.
Use cases
- Routing cracks in concrete slabs and pavement before sealant or caulk goes in
- Widening cracks so backer rod and sealant have room to bond
- Municipal maintenance crews and sealing contractors preparing crack repair work
Frequently asked questions
What is a crack chaser blade used for?
It routs and widens an existing crack in concrete or asphalt so it can be cleaned out and filled properly.
Does the MK-8375 need a special arbor?
Yes. 151934 has a 1-inch arbor with a drive pin hole, which is what MK's crack chasing saw requires. The plain 7/8-inch to 5/8-inch version does not fit that saw.
How does the MK-8375 differ from the MK-8250 and MK-8500?
They are the same 8-inch V-segment design in .250, .375 and .500-inch widths. The MK-8375 is the .375-inch mid-width.
