- Category
Diamond Blades
Diamond blades are at the core of what CMT Group does, with our OTEC range trusted across major UK construction and infrastructure projects for its cutting performance, blade longevity, and reliability under real site conditions. We supply a complete range of diamond blades and cutting discs for concrete, asphalt, stone, and specialist materials, alongside floor saw blades, bench saw blades, diamond core drilling equipment, and cutting and grinding discs.
Read more Read less
As diamond blade specialists with continuous investment in research and development, CMT Group supplies contractor-grade cutting equipment to construction teams, civils contractors, and specialist cutting trades across the UK, with same-day and next-day delivery available for urgent site requirements.
- ✓ OTEC diamond blades for concrete, asphalt, stone and specialist materials
- ✓ Floor saw and bench saw blades for large-scale cutting operations
- ✓ Diamond core drilling equipment for precise hole cutting
- ✓ Cutting and grinding discs for angle grinders and petrol saws
- ✓ Material-specific blade selection for optimum performance and service life
- ✓ Used by tier one contractors on major UK construction projects
- ✓ Bulk supply with same-day and next-day delivery across the UK
What Are Diamond Blades?
Diamond blades are cutting tools that use industrial-grade synthetic diamond segments bonded to a steel core. The diamonds, being the hardest known material, abrade through hard and abrasive construction materials that standard steel or abrasive blades cannot cut efficiently or at all. The bond matrix holding the diamonds is engineered to wear at the correct rate for the target material, gradually exposing fresh diamond as the blade cuts.
Each blade is designed for a specific material or range of materials. Concrete blades are engineered for the hardness and aggregate of structural concrete. Asphalt blades use a softer bond matrix to handle the abrasive, bituminous nature of road surfaces. Stone and granite blades are formulated for the density and abrasiveness of natural stone. Using the wrong blade for a material reduces cutting speed, shortens blade life, and can create a safety hazard on site. Correct material matching is the single most important factor in diamond blade performance.
Diamond Blades and Cutting Equipment by Type
Our range covers every diamond cutting application required on UK construction, civils, and specialist cutting projects.
OTEC Diamond Blades
CMT Group's flagship diamond blade range, engineered for professional use on UK construction projects. Covers concrete, asphalt, stone, granite, brick, and multi-purpose applications for petrol saws and angle grinders.
Concrete · Asphalt · Stone · Multi-purpose · Specialist materials
Floorsaw Blades
Large-diameter diamond blades designed for floor saws and road saws, used for deep cutting of concrete slabs, asphalt roads, and reinforced structures in civil engineering and infrastructure projects.
Large diameter · Deep cutting · Concrete and asphalt
Benchsaw Blades
Diamond blades for bench saws and table saws, used for precision cutting of blocks, paving, tiles, stone, and masonry materials where accuracy and finish quality are critical.
Precision cutting · Stone and masonry · Paving and tiles
Diamond Core Drilling
Diamond core bits and drilling equipment for cutting precise circular holes in concrete, masonry, and stone, used in construction, MEP installations, and structural investigations.
Core bits · Concrete and masonry · Precision hole cutting
Cutting and Grinding Discs
Diamond and abrasive cutting discs and grinding discs for angle grinders, covering concrete, stone, metal, and surface preparation applications across construction and fabrication.
Angle grinder · Cutting and grinding · Multiple materials
Drilling
Drill bits and drilling accessories for concrete, masonry, wood, and tile applications, covering SDS, rotary, and specialist drill bits for construction and trade use.
SDS and rotary · Concrete, wood and tile · Construction and trade
Choosing the Right Diamond Blade
Selecting the correct diamond blade depends on three factors: the material being cut, the machine being used, and the required cutting performance. Getting material matching right is the most important step, as using a blade specified for the wrong material reduces cutting speed, shortens blade life significantly, and creates unnecessary wear on both the blade and the machine.
Blade diameter and bore size must match the machine specifications exactly. Segment height affects service life: taller segments last longer under heavy-duty use but cost more upfront. For contractors working across multiple material types on the same project, a multi-purpose blade offers flexibility, though a material-specific blade will always deliver better performance and a longer service life on a single material.
| Material | Recommended blade type | Typical machine |
|---|---|---|
| Reinforced and structural concrete | Hard bond concrete blade (e.g. OTEC DX05) | Petrol saw, floor saw, angle grinder |
| Asphalt and road surfaces | Soft bond asphalt blade (e.g. OTEC D20) | Petrol saw, floor saw |
| Granite and hard stone | Granite and hard stone specialist blade | Angle grinder, bench saw |
| Brick, block and masonry | General purpose or masonry blade | Angle grinder, petrol saw |
| Paving, kerbs and natural stone | Benchsaw or floorsaw stone blade | Bench saw, floor saw |
| Mixed or unknown materials | Multi-purpose diamond blade | Petrol saw, angle grinder |
Diamond Blade Specialists for UK Construction and Civil Engineering
Diamond blades are essential cutting tools across construction, civil engineering, highways, and infrastructure, where precision, speed, and blade durability directly affect project productivity and cost. The right blade reduces cutting time, minimises blade changes, and delivers a cleaner cut finish across concrete, asphalt, stone, and specialist materials.
CMT Group has positioned diamond blades at the centre of its business since its founding, with continuous investment in the OTEC range driving performance advances that have made it the choice of tier one contractors on major UK projects. Whether you need blades for a petrol saw on a road cutting job, a floor saw on a structural concrete slab, or a bench saw for precision paving work, CMT Group supplies the right blade with the stock availability and delivery speed that site operations require.
Frequently asked questions
What are diamond blades used for?
Diamond blades are used to cut hard construction materials including concrete, asphalt, stone, granite, brick, masonry, and tiles. They are used with petrol saws for road and site cutting, floor saws for slab and road surface work, bench saws for precision masonry cutting, and angle grinders for smaller cuts and surface preparation.
What is the difference between concrete and asphalt diamond blades?
Concrete blades use a harder bond matrix to handle the density and hardness of structural concrete, including reinforced concrete. Asphalt blades use a softer bond to handle the abrasive, bituminous nature of road surfaces, which wears down diamond segments much faster than concrete. Using a concrete blade on asphalt will accelerate segment wear; using an asphalt blade on concrete will result in poor performance and a short blade life.
How do I choose the right diamond blade?
Choose based on the material being cut first, then confirm the blade diameter and bore size match your machine. Segment height affects service life: taller segments last longer under heavy use. If you are cutting a single material consistently, a material-specific blade will outperform a multi-purpose blade. If you are unsure which blade is right for your application, contact CMT Group and our team will advise on the correct specification.
What affects diamond blade lifespan?
The primary factors are material hardness and abrasiveness, correct material matching (using the right blade for the job), machine speed and cutting technique, segment height, and whether the blade is used wet or dry. Using the wrong blade for a material is the single biggest cause of premature blade failure. Higher-specification blades with taller segments will provide longer service life in demanding applications.
What is the OTEC diamond blade range?
OTEC is CMT Group's flagship diamond blade range, developed through continuous investment in research and development. The range includes material-specific blades for concrete, asphalt, stone, granite, and more, and has been used by tier one contractors on major UK construction and infrastructure projects. Best sellers include the DX05 Professional Concrete Cutting Diamond Blade and the D20 Professional Asphalt Cutting Diamond Blade.
Why buy diamond blades from CMT Group?
CMT Group are diamond blade specialists, not a general supplier. Our OTEC range is developed in-house through continuous R&D investment and is trusted by tier one contractors on major UK projects. We supply contractor-grade blades at scale with same-day and next-day delivery available, and our team can advise on the correct blade specification for any cutting application.
Segmented vs Continuous Rim Diamond Blades: What is the Difference?
Diamond blades come in two main rim types: segmented and continuous rim (also known as smooth rim). Segmented blades have individual diamond segments separated by gullets, which allow debris to escape during cutting, reduce heat build-up, and enable faster, more aggressive cutting through hard materials such as concrete, asphalt, stone, and brick. The trade-off is a slightly rougher cut edge, which is acceptable for most structural and civils applications.
Continuous rim blades have an uninterrupted diamond-coated edge, which produces a much smoother, chip-free cut. They are designed primarily for precision cutting of tiles, ceramics, porcelain, and natural stone where cut quality and edge finish are important. Continuous rim blades cut more slowly than segmented blades, generate more heat, and are typically used wet with water cooling to protect both the blade and the material. Choosing between the two comes down entirely to the application: segmented for speed and structural materials, continuous rim for precision and surface-sensitive materials.
Accreditations and memberships
BSI ISO 9001:2015
Achilles Building Confidence
ConstructionOnline Gold
CHAS Elite
Avetta Member
Shop Diamond Blades and Cutting Equipment by Type
Diamond Blades
Diamond blades are at the core of what CMT Group does, with our OTEC range trusted across major UK construction and infrastructure projects for its cutting performance, blade longevity, and reliability under real site conditions. We supply a complete range of diamond blades and cutting discs for concrete, asphalt, stone, and specialist materials, alongside floor saw blades, bench saw blades, diamond core drilling equipment, and cutting and grinding discs.
Read more Read less
As diamond blade specialists with continuous investment in research and development, CMT Group supplies contractor-grade cutting equipment to construction teams, civils contractors, and specialist cutting trades across the UK, with same-day and next-day delivery available for urgent site requirements.
- ✓ OTEC diamond blades for concrete, asphalt, stone and specialist materials
- ✓ Floor saw and bench saw blades for large-scale cutting operations
- ✓ Diamond core drilling equipment for precise hole cutting
- ✓ Cutting and grinding discs for angle grinders and petrol saws
- ✓ Material-specific blade selection for optimum performance and service life
- ✓ Used by tier one contractors on major UK construction projects
- ✓ Bulk supply with same-day and next-day delivery across the UK
What Are Diamond Blades?
Diamond blades are cutting tools that use industrial-grade synthetic diamond segments bonded to a steel core. The diamonds, being the hardest known material, abrade through hard and abrasive construction materials that standard steel or abrasive blades cannot cut efficiently or at all. The bond matrix holding the diamonds is engineered to wear at the correct rate for the target material, gradually exposing fresh diamond as the blade cuts.
Each blade is designed for a specific material or range of materials. Concrete blades are engineered for the hardness and aggregate of structural concrete. Asphalt blades use a softer bond matrix to handle the abrasive, bituminous nature of road surfaces. Stone and granite blades are formulated for the density and abrasiveness of natural stone. Using the wrong blade for a material reduces cutting speed, shortens blade life, and can create a safety hazard on site. Correct material matching is the single most important factor in diamond blade performance.
Diamond Blades and Cutting Equipment by Type
Our range covers every diamond cutting application required on UK construction, civils, and specialist cutting projects.
OTEC Diamond Blades
CMT Group's flagship diamond blade range, engineered for professional use on UK construction projects. Covers concrete, asphalt, stone, granite, brick, and multi-purpose applications for petrol saws and angle grinders.
Concrete · Asphalt · Stone · Multi-purpose · Specialist materials
Floorsaw Blades
Large-diameter diamond blades designed for floor saws and road saws, used for deep cutting of concrete slabs, asphalt roads, and reinforced structures in civil engineering and infrastructure projects.
Large diameter · Deep cutting · Concrete and asphalt
Benchsaw Blades
Diamond blades for bench saws and table saws, used for precision cutting of blocks, paving, tiles, stone, and masonry materials where accuracy and finish quality are critical.
Precision cutting · Stone and masonry · Paving and tiles
Diamond Core Drilling
Diamond core bits and drilling equipment for cutting precise circular holes in concrete, masonry, and stone, used in construction, MEP installations, and structural investigations.
Core bits · Concrete and masonry · Precision hole cutting
Cutting and Grinding Discs
Diamond and abrasive cutting discs and grinding discs for angle grinders, covering concrete, stone, metal, and surface preparation applications across construction and fabrication.
Angle grinder · Cutting and grinding · Multiple materials
Drilling
Drill bits and drilling accessories for concrete, masonry, wood, and tile applications, covering SDS, rotary, and specialist drill bits for construction and trade use.
SDS and rotary · Concrete, wood and tile · Construction and trade
Choosing the Right Diamond Blade
Selecting the correct diamond blade depends on three factors: the material being cut, the machine being used, and the required cutting performance. Getting material matching right is the most important step, as using a blade specified for the wrong material reduces cutting speed, shortens blade life significantly, and creates unnecessary wear on both the blade and the machine.
Blade diameter and bore size must match the machine specifications exactly. Segment height affects service life: taller segments last longer under heavy-duty use but cost more upfront. For contractors working across multiple material types on the same project, a multi-purpose blade offers flexibility, though a material-specific blade will always deliver better performance and a longer service life on a single material.
| Material | Recommended blade type | Typical machine |
|---|---|---|
| Reinforced and structural concrete | Hard bond concrete blade (e.g. OTEC DX05) | Petrol saw, floor saw, angle grinder |
| Asphalt and road surfaces | Soft bond asphalt blade (e.g. OTEC D20) | Petrol saw, floor saw |
| Granite and hard stone | Granite and hard stone specialist blade | Angle grinder, bench saw |
| Brick, block and masonry | General purpose or masonry blade | Angle grinder, petrol saw |
| Paving, kerbs and natural stone | Benchsaw or floorsaw stone blade | Bench saw, floor saw |
| Mixed or unknown materials | Multi-purpose diamond blade | Petrol saw, angle grinder |
Diamond Blade Specialists for UK Construction and Civil Engineering
Diamond blades are essential cutting tools across construction, civil engineering, highways, and infrastructure, where precision, speed, and blade durability directly affect project productivity and cost. The right blade reduces cutting time, minimises blade changes, and delivers a cleaner cut finish across concrete, asphalt, stone, and specialist materials.
CMT Group has positioned diamond blades at the centre of its business since its founding, with continuous investment in the OTEC range driving performance advances that have made it the choice of tier one contractors on major UK projects. Whether you need blades for a petrol saw on a road cutting job, a floor saw on a structural concrete slab, or a bench saw for precision paving work, CMT Group supplies the right blade with the stock availability and delivery speed that site operations require.
Frequently asked questions
What are diamond blades used for?
Diamond blades are used to cut hard construction materials including concrete, asphalt, stone, granite, brick, masonry, and tiles. They are used with petrol saws for road and site cutting, floor saws for slab and road surface work, bench saws for precision masonry cutting, and angle grinders for smaller cuts and surface preparation.
What is the difference between concrete and asphalt diamond blades?
Concrete blades use a harder bond matrix to handle the density and hardness of structural concrete, including reinforced concrete. Asphalt blades use a softer bond to handle the abrasive, bituminous nature of road surfaces, which wears down diamond segments much faster than concrete. Using a concrete blade on asphalt will accelerate segment wear; using an asphalt blade on concrete will result in poor performance and a short blade life.
How do I choose the right diamond blade?
Choose based on the material being cut first, then confirm the blade diameter and bore size match your machine. Segment height affects service life: taller segments last longer under heavy use. If you are cutting a single material consistently, a material-specific blade will outperform a multi-purpose blade. If you are unsure which blade is right for your application, contact CMT Group and our team will advise on the correct specification.
What affects diamond blade lifespan?
The primary factors are material hardness and abrasiveness, correct material matching (using the right blade for the job), machine speed and cutting technique, segment height, and whether the blade is used wet or dry. Using the wrong blade for a material is the single biggest cause of premature blade failure. Higher-specification blades with taller segments will provide longer service life in demanding applications.
What is the OTEC diamond blade range?
OTEC is CMT Group's flagship diamond blade range, developed through continuous investment in research and development. The range includes material-specific blades for concrete, asphalt, stone, granite, and more, and has been used by tier one contractors on major UK construction and infrastructure projects. Best sellers include the DX05 Professional Concrete Cutting Diamond Blade and the D20 Professional Asphalt Cutting Diamond Blade.
Why buy diamond blades from CMT Group?
CMT Group are diamond blade specialists, not a general supplier. Our OTEC range is developed in-house through continuous R&D investment and is trusted by tier one contractors on major UK projects. We supply contractor-grade blades at scale with same-day and next-day delivery available, and our team can advise on the correct blade specification for any cutting application.
Segmented vs Continuous Rim Diamond Blades: What is the Difference?
Diamond blades come in two main rim types: segmented and continuous rim (also known as smooth rim). Segmented blades have individual diamond segments separated by gullets, which allow debris to escape during cutting, reduce heat build-up, and enable faster, more aggressive cutting through hard materials such as concrete, asphalt, stone, and brick. The trade-off is a slightly rougher cut edge, which is acceptable for most structural and civils applications.
Continuous rim blades have an uninterrupted diamond-coated edge, which produces a much smoother, chip-free cut. They are designed primarily for precision cutting of tiles, ceramics, porcelain, and natural stone where cut quality and edge finish are important. Continuous rim blades cut more slowly than segmented blades, generate more heat, and are typically used wet with water cooling to protect both the blade and the material. Choosing between the two comes down entirely to the application: segmented for speed and structural materials, continuous rim for precision and surface-sensitive materials.
Accreditations and memberships
BSI ISO 9001:2015
Achilles Building Confidence
ConstructionOnline Gold
CHAS Elite
Avetta Member
