The CMT ITK Plus Diamond Saw Blade for Fiber Cement - 190mm is a professional-grade circular saw blade engineered specifically for cutting fiber cement siding, panels, and similar ultra-hard building materials. With diamond-tipped teeth and a Triple Chip Grind (TCG) tooth geometry, this blade delivers clean, chip-free cuts through fiber cement, plasterboard, and Eternit products while providing dramatically longer service life than standard carbide alternatives. Designed to fit portable circular saws, miter saws, radial arm saws, and table saws with a 30mm metric bore, it is the purpose-built solution for contractors and installers working with fiber cement cladding systems.

Key Features

• ITK Plus Diamond Tooth Technology - diamond-tipped teeth are engineered specifically for ultra-hard materials like fiber cement, delivering far greater edge longevity compared to conventional carbide teeth and reducing the frequency of blade changes on the job.
• Triple Chip Grind (TCG) Tooth Geometry - the TCG tooth profile is designed to shear through abrasive fiber cement without causing chipping or cracking, resulting in cleaner edges and less material waste.
• 4-Tooth Configuration - a low tooth count optimized for fiber cement cutting keeps blade mass and friction low, reducing heat buildup and allowing faster feed rates through dense, abrasive sheet material.
• 12 deg. Cutting Angle - a positive cutting angle matched to fiber cement cutting mechanics helps the blade engage material efficiently, contributing to smoother cuts and reduced vibration.
• 30mm Metric Bore with 2/7/42 Pin Hole - designed for metric-arbor machines including track saw systems, ensuring secure, centered mounting with no adapters required on compatible tools.
• 2.4mm Kerf / 1.8mm Plate Construction - a precisely engineered kerf-to-plate ratio minimizes material removal while maintaining blade stability, reducing dust and improving cut accuracy.
• DP Diamond Material - manufactured using DP-grade diamond material, providing the hardness needed to handle the silica content in fiber cement without rapid dulling.

Why This Product

• Fiber cement is one of the most abrasive materials encountered in residential and commercial cladding work - a diamond-tipped blade using DP-grade material is purpose-built to handle that abrasiveness without premature wear, unlike general-purpose carbide blades.
• The TCG tooth grind is specifically suited to cutting brittle, hard sheet materials like Eternit and plasterboard, reducing the risk of edge fractures that can compromise installation quality.
• With a 30mm metric bore and 2/7/42 pin hole configuration, this blade is directly compatible with Festool and other metric-arbor portable circular saws, track saws, and miter saws - no reduction ring or adapter required.
• The 4-tooth, low-kerf design (2.4mm cutting width, 1.8mm plate) is matched to the demands of fiber cement cutting, minimizing silica dust generation and keeping the blade running cool during extended cutting sessions.

Specifications

• Manufacturer Part Number: 236.190.04M
• Brand: CMT Orange Tools
• Diameter: 190mm
• Bore Diameter: 30mm
• Pin Hole: 2/7/42
• Number of Teeth: 4
• Tooth Grind Type: Triple Chip Grind (TCG)
• Kerf Thickness: 0.094"
• Plate Thickness: 0.071"
• Cutting Angle: 12 deg.
• Tooth Material: DP Diamond
• Blade Series: ITK Plus

Approved Applications

• Fiber cement siding and panels
• Plasterboard
• Eternit
• Ultra-hard building sheet materials
• Use with portable circular saws
• Use with miter saws
• Use with radial arm saws
• Use with stationary table saws
• Compatible with Festool track saw systems (metric-arbor machines)

Frequently Asked Questions

What is the bore size on this blade and what machines is it compatible with?

This blade has a 30mm metric bore diameter with a 2/7/42 pin hole configuration. It is compatible with portable circular saws, miter saws, radial arm saws, and stationary table saws that accept a 30mm metric arbor - including Festool track saw systems designed for metric-bore blades.

Why does this blade have only 4 teeth for cutting fiber cement?

The 4-tooth configuration is intentional for fiber cement cutting. A low tooth count reduces heat buildup and friction when cutting through the dense, silica-rich material in fiber cement products. Combined with the TCG tooth grind, the design prioritizes blade longevity and cut quality over tooth count.

What is the difference between the kerf thickness and plate thickness listed for this blade?

The kerf thickness (0.094") is the width of the cut the blade removes from the material, determined by the width of the diamond-tipped teeth. The plate thickness (0.071") is the thickness of the steel body of the blade itself. The kerf is wider than the plate to prevent the body from binding in the cut during use.

Can this blade cut materials other than fiber cement?

Yes - in addition to fiber cement, this blade is suited for cutting plasterboard and Eternit products. It is designed for ultra-hard building materials and performs best on abrasive sheet goods in that category. The diamond tooth material and TCG grind make it effective across these related hard-material applications.