Purpose-built for cordless grinders, the Marcrist CK850 AkkuMAX PRO cuts porcelain, granite, marble and natural stone dry or wet. The 1.2mm ultra-thin steel core delivers chip-free precision, reduced vibration and up to 100% more cuts per battery charge.
The Marcrist CK850 AkkuMAX PRO is a 115mm diamond tile blade built specifically for cordless angle grinders. If you’ve ever watched a battery drain halfway through a run of porcelain tiles and had to stop for a charge, this blade was designed with you in mind. The marcrist 115mm ck850 tile blade draws less power from the motor by cutting faster and with less resistance, which in practice can double the number of cuts you get from a single charge. That’s not a small thing on a tiling job where time costs money.
At the heart of it is a patented 1.2mm ultra-thin steel core, reinforced for stability without adding unnecessary mass. Thinner core means less material to drag through the cut, which reduces friction, heat and the load on your grinder motor. The X-Tooth geometry on the cutting edge is what keeps the finish clean — chip-free results on porcelain, ceramic, marble, mosaic tiles, granite and natural stone. Anyone who has chipped a porcelain tile close to a finished edge knows exactly how much that matters.
Where the CK850 AkkuMAX PRO Performs
This blade is at home on wall and floor tiling work, wet rooms, kitchen splashbacks, and any job where porcelain or natural stone is being cut to fit. It handles dry cutting well, which suits cordless working on site where a water feed isn’t always practical. Wet cutting is equally supported if you’re working with a bench saw or wet grinder setup. The SilentMAX technology built into the core damps vibration and brings the noise level down — useful when you’re working in occupied buildings or confined spaces, and easier on your hands over a long day.
The 10mm diamond rim depth gives this blade a longer working life than many thinner-rimmed alternatives. You’re not buying a blade that burns through ten cuts of hard porcelain and calls it a day. The 22mm bore fits standard angle grinder spindles directly, so there’s no messing around with reducers on a 115mm grinder.
Marcrist designed the CK850 range to deliver 50% faster cutting compared to conventional blades on the same grinder. Faster cuts mean less heat build-up, less stress on the motor and cleaner edges — all of which matter when you’re cutting expensive tiles and can’t afford waste. The AkkuMAX PRO is available in 100mm, 115mm and 125mm to match different grinder sizes.
Pro Tip: When dry cutting hard porcelain with a cordless grinder, let the blade do the work rather than forcing it through. Light, consistent pressure keeps the diamond rim cooler and the cut edge cleaner, and it will noticeably extend how many cuts you get before recharging.
The CK850 AkkuMAX PRO is used by tilers, stone fixers and general building trades cutting porcelain, ceramic, marble, granite, mosaic tiles and natural stone. It suits both new build and refurbishment work, covering wall tiling, floor laying, wet rooms, bathroom installations and kitchen fitting. Dry cutting capability makes it practical on sites where a water feed is inconvenient or unavailable, while compatibility with standard 115mm cordless angle grinders keeps it accessible across most trade setups.
Best For
Porcelain tiles
Ceramic tiles
Marble
Granite
Natural stone
Mosaic tiles
Cordless angle grinder use
Compatible With
115mm cordless angle grinders
22mm spindle bore grinders
Dry cutting applications
Wet cutting applications
Key Specifications
115mm blade diameter
22mm bore
1.2mm ultra-thin steel core
10mm diamond rim depth
X-Tooth chip-free cutting geometry
SilentMAX vibration and noise reduction
AkkuMAX technology for extended battery life
Not suitable for: Not intended for use on timber, metal, plastics or general masonry where a standard segmented diamond blade would be the more appropriate choice. Not designed for use on angle grinders above 125mm disc size.
Fit the blade to a 115mm cordless angle grinder with a 22mm spindle, ensuring the blade is seated correctly and the retaining nut is tightened securely. Check the direction arrow on the blade matches the rotation of your grinder before starting.
For dry cutting, mark your tile clearly and guide the grinder along the line using light, steady pressure. Forcing the blade slows it down and generates heat, neither of which helps the cut or the battery. For wet cutting, set up a water feed to the cutting line in the usual way. Let the blade reach full speed before contact with the tile.
Check the grinder spindle size is 22mm before fitting
Mount the blade and confirm the rotation direction arrow matches your grinder
Tighten the retaining nut firmly using the correct spanner
Mark the cut line clearly on the tile surface
Bring the grinder to full speed before contacting the tile
Apply light, consistent pressure and guide the blade along the marked line
Allow the blade to cool between heavy cuts on dense materials such as thick porcelain or granite
Can the CK850 AkkuMAX PRO be used on a mains-powered angle grinder as well as cordless?
Yes. The blade fits any 115mm angle grinder with a 22mm bore, corded or cordless. The AkkuMAX technology is specifically optimised to reduce battery drain on cordless tools, but the blade performs well on mains grinders too, delivering the same fast cutting speed and chip-free finish regardless of power source.
Does the 1.2mm core make the blade fragile or prone to flexing under load?
The steel core is patented and reinforced specifically to resist flexing despite the reduced thickness. Thin does not mean weak here. The design reduces drag and motor load rather than structural integrity. That said, like any thin-core blade, it should be used for straight cuts only. Twisting or levering the blade mid-cut on any tile blade will shorten its life quickly.
The CK850 AkkuMAX PRO uses a reinforced 1.2mm steel core with Marcrist's proprietary X-Tooth cutting geometry, designed to minimise chipping on dense, brittle materials including full-body porcelain and polished marble. SilentMAX damping technology is integrated into the core to reduce both noise and vibration during use. The 10mm diamond rim provides extended service life across hard tile and stone materials. Bore size is 22mm, compatible with standard European angle grinder spindle fittings.
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