The Marcrist MC850 Silent Max diamond blade is engineered for cutting hard materials with significantly reduced noise. Available in 115mm to 350mm, it suits angle grinders and floor saws across a wide range of site applications.
Size
Price
QTY
115mm
£29.90£35.88
125mm
£34.90£41.88
230mm
£59.90£71.88
300mm
£99.90£119.88
350mm
£109.90£131.88
The Marcrist MC850 Silent Max diamond blade is one of those tools that earns its keep quickly on a busy site. Standard diamond blades do the job, but the noise they generate in enclosed spaces — basement conversions, corridor chases, bathroom strips — is genuinely punishing over a long shift. The MC850 addresses that directly. Using a tensioned, slotted steel core with vibration-dampening technology built into the plate, it cuts noise output considerably compared to a standard segmented blade, without trading away cutting performance to do it.
Available in 115mm, 125mm, 230mm, 300mm and 350mm, the MC850 covers everything from a handheld angle grinder up to a floor saw or large disc cutter. That range makes it practical across multiple trades and applications rather than being a specialist single-use purchase.
Where the Marcrist MC850 Silent Max Performs Best
This blade is built for hard masonry and concrete cutting. Brick, block, natural stone, concrete screed, engineering brick — these are the materials it is designed around. The silent core technology is particularly valuable when cutting indoors where noise restrictions apply, on occupied sites, or simply when you are trying to protect your hearing without stopping every five minutes to swap blades.
Marcrist produce blades specifically for the professional end of the market. The MC850 is not a budget blade trying to look the part — the diamond segment spec and core engineering are aimed at trades who use a grinder or disc cutter regularly and need consistent performance rather than a blade that degrades unpredictably mid-cut. On hard aggregate concrete or dense engineering block, a poorly bonded segment will glaze quickly. The MC850’s segment formulation is matched to those harder materials and holds up accordingly.
Noise Reduction in Practice
The silent max designation refers to the slotted and tensioned plate design. The slots are not just aesthetic — they interrupt the harmonic resonance that causes a spinning steel disc to act like a speaker cone. Less resonance means less airborne noise transmitted to the surrounding space. On a concrete floor in a kitchen refit, that is a meaningful difference for both the operator and anyone else working nearby. It will not make a disc cutter whisper-quiet, but it makes a real, noticeable reduction.
Priced at £29.90 per blade, the MC850 represents solid value for a professional-grade silent diamond blade from a well-regarded UK cutting specialist.
Pro Tip: When cutting dense engineering brick or hard aggregate concrete, keep the blade moving steadily rather than forcing feed pressure — letting the segments do the work extends segment life significantly and helps the silent core technology perform as intended.
The MC850 is used across brickwork, blockwork, concrete slabs, screed, natural stone and hard masonry. It fits angle grinders in the smaller sizes and disc cutters or floor saws in the larger formats. Typical jobs include wall chasing for first-fix services, cutting paving slabs to shape, trimming engineering bricks, and scribing concrete floors before levelling. It is a go-to blade for groundworkers, bricklayers, tilers working with stone, and general builders who need a reliable hard masonry blade that performs well indoors.
Best For
Cutting concrete and screed
Brick and blockwork
Natural stone and paving
Engineering brick
Indoor and noise-sensitive site work
Compatible With
115mm angle grinders
125mm angle grinders
230mm angle grinders
Disc cutters
Floor saws (300mm and 350mm sizes)
Key Specifications
Available sizes: 115mm, 125mm, 230mm, 300mm, 350mm
Silent Max vibration-dampening core
Segmented diamond rim
Suitable for dry cutting
Professional grade segment bonding
Not suitable for: Not intended for cutting soft materials such as timber, plastics or non-ferrous metals. Not suitable for use on wall saws or wire saws — check your machine's RPM rating matches the blade size before fitting.
Fit the blade to a compatible machine, ensuring the RPM rating of the blade is not exceeded by the machine's maximum speed. Check the blade is correctly seated and the flange is secure before starting. Always wear appropriate PPE including a dust mask rated for silica dust, eye protection and hearing protection — silent max reduces noise but does not eliminate it.
For best results, use steady, consistent feed pressure and allow the blade to cut at its own pace through hard materials. Forcing the blade into dense concrete or engineering brick will cause overheating and accelerate segment wear. On longer cuts, short pauses allow the blade to cool. Dry cutting is standard for this blade, though wetting the surface can further reduce airborne dust on open sites.
Check the blade size and maximum RPM rating match your grinder or disc cutter
Fit the blade securely using the correct flange and spanner — do not overtighten
Put on dust mask, safety glasses and hearing protection before starting
Mark your cut line clearly on the material surface
Begin the cut at a steady pace without forcing feed pressure into the material
Allow the blade to cool with brief pauses on extended or deep cuts
Inspect the blade periodically for segment wear or cracks — replace if damaged
How much quieter is the MC850 compared to a standard diamond blade?
A noticeable reduction in operational noise compared to a standard segmented blade, though exact dB figures vary by machine and cutting conditions. The slotted silent core design reduces the harmonic resonance that causes most of the high-pitched ringing associated with spinning diamond blades. It is a practical difference you will notice on site, particularly when cutting in enclosed spaces.
Can the MC850 be used for wet cutting as well as dry?
The MC850 is suited to dry cutting as standard. Wetting the material surface during cutting is fine and helps suppress dust, but it is not a dedicated wet cutting blade requiring a continuous water feed system. For most site applications, dry use is perfectly appropriate.
The MC850 features a laser-cut, tensioned steel core with strategically placed slots that reduce plate resonance during operation. The diamond segments are bonded using a formulation suited to hard, abrasive materials including dense concrete and engineering masonry. The silent plate technology works passively, requiring no additional components, and remains effective throughout the working life of the blade.
Brand
Marcrist
Model
MC850 Silent Max
Available Sizes
115mm, 125mm, 230mm, 300mm, 350mm
Segment Type
Segmented diamond rim
Core Type
Silent Max tensioned slotted steel plate
Cutting Application
Dry cutting
Suitable Materials
Concrete, brick, block, natural stone, screed
Box Quantity
1
Size
115mm, 125mm, 230mm, 300mm, 350mm
Box Quantity
1
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