Porcelain and hard vitreous tile chip if the blade is wrong, and a chipped edge on a visible cut is a tile you throw away. The MK Diamond MK-404CR is a thin-rim blade built for dry cutting hard and vitreous ceramic tile, designed to cut chip-free with minimal heat build-up. This is the 4-inch size, .060 inch wide on a 20mm-5/8 inch arbor, part number 140277.
Built for
- Dry cutting porcelain, hard ceramic and vitreous tile on site with an angle grinder.
- Trim and finish cuts around outlets, drains, door jambs and fixtures where the edge will be seen.
- Stone and hard-material cuts where chipping the face is the failure that matters.
- Installers who need to make a handful of cuts without setting up and draining a wet saw.
Why a thin continuous rim
A continuous rim has no gullets, so nothing periodically slams into the edge of the tile the way a segmented or turbo rim does. That is what produces a clean edge on glazed and vitreous surfaces. The trade-off is heat: with no gullets there is less airflow through the rim, which is why the thin .060 inch body matters. Less material in the cut means less friction, less heat and less stress on the tile, and MK builds this rim specifically to keep heat build-up down in dry use.
Tile installers add two habits that make a real difference on hard porcelain. Score a shallow first pass rather than going full depth in one go, which keeps the rim cooler and the glaze intact. And on a cut that will be visible, run masking tape along the line; it supports the glaze while the rim is entering and leaving the tile. Practitioners also let the blade spin free in air for a few seconds between cuts on a long run, which sheds heat that would otherwise stay in the rim.
Specifications
- Part number: 140277
- Manufacturer: MK Diamond
- Model: MK-404CR
- Grade: supreme
- Diameter: 4 inches (102mm)
- Width: .060 inch
- Arbor: 20mm-5/8 inch
- Rim height: 7mm
- Rim type: continuous thin rim
- Cutting: dry
- Material: hard and vitreous ceramic tile
Before you order
Check the arbor against your grinder or saw. This blade is bored 20mm-5/8 inch. Confirm your machine and guard are rated for a 4-inch blade, keep the guard fitted, and use dust control, because dry cutting tile and stone produces silica dust.
Frequently asked questions
What materials does the MK-404CR cut?
It is a thin-rim blade for dry cutting hard and vitreous ceramic tile, and it is used on other hard materials where a chip-free edge matters.
What are the exact dimensions?
Part 140277 is 4 inches (102mm) in diameter, .060 inch wide, on a 20mm-5/8 inch arbor, with a 7mm rim height.
Is this a wet or dry blade?
MK builds the MK-404CR for dry cutting. Use dust control, as dry cutting tile and stone produces silica dust.
Will it fit my angle grinder?
It is bored 20mm-5/8 inch. Confirm your grinder and guard are rated for a 4-inch blade before fitting it.
How do I keep porcelain from chipping?
Take a shallow scoring pass before cutting to full depth, run masking tape along a cut that will be visible, and let the blade cool in air between cuts on a long run.
Why a continuous rim instead of a turbo or segmented blade?
A continuous rim has no gullets striking the tile edge, so it leaves a cleaner finish on glazed and vitreous surfaces. Segmented and turbo rims cut faster but chip more.
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.
