CMT Non Ferrous-Plastic Circular Saw Blade - 500mm x 4/3.2mm x 25.4mm, 120-Tooth TCG Negative Rake is a professional-grade tungsten carbide-tipped saw blade engineered for clean, burr-free cutting of aluminum, brass, copper, plastics, and composite materials. Designed for demanding industrial environments, this large-diameter blade delivers the precision and surface quality that soft metal and plastic fabrication applications require - making it a reliable choice for panel saws, multi-rip saws, and industrial table saws handling non-ferrous stock.

Key Features

• Triple Chip Grind (TCG) Tooth Geometry - the alternating flat and chamfered tooth pattern distributes cutting forces evenly across non-ferrous metals and plastics, reducing chipping, burring, and material delamination for cleaner finished edges.
• Negative Rake Angle - slows the rate at which the tooth engages the workpiece, preventing grabbing and kickback when cutting aluminum sheet, plastic panels, and other non-ferrous materials, improving control and operator safety.
• 120-Tooth Count - the high tooth count means more cutting edges contact the material per revolution, producing exceptionally fine, smooth cuts that reduce or eliminate the need for secondary finishing on soft metals and plastics.
• 500mm (19-11/16 in.) Blade Diameter - large format sizing matches the cutting capacity of industrial panel saws and multi-rip saws, allowing full-depth crosscuts and rip cuts through thick non-ferrous sheet stock and plastic panels.
• 4mm Kerf / 3.2mm Body - the slightly wider kerf than body thickness provides blade clearance that reduces heat buildup and friction during extended production runs, helping maintain cut quality and blade longevity.
• 25.4mm (1 in.) Bore - the standard 1 in. arbor bore ensures direct compatibility with a wide range of industrial saw arbors without requiring reduction bushings for most configurations.

Why This Product

• The TCG negative rake geometry is purpose-built for non-ferrous metals and plastics - where standard woodworking blades produce rough edges, torn surfaces, and dangerous kickback. This blade is optimized specifically for those materials.
• With 120 teeth on a 500mm diameter, the tooth pitch is fine enough to produce near-finished cut surfaces on aluminum extrusions, brass plate, and plastic sheet, reducing downstream labor and material waste.
• The 500mm diameter and 25.4mm bore specification match the arbor and capacity requirements of industrial panel saws and multi-rip saws, making this a direct-fit solution for high-throughput shop environments.
• The wider kerf-to-body ratio (4mm kerf over 3.2mm body) means the blade runs cooler and with less binding during long production cycles - translating to more consistent cut quality and reduced blade wear over time.

Specifications

• Manufacturer Part Number: Y297.120.20
• Brand: CMT Orange Tools
• Description: NON FERROUS-PLASTIC HW 500x4/3.2x25.4 Z120 TCG-NEG
• Blade Diameter: 500mm (19-11/16 in.)
• Kerf Width: 4mm
• Body Thickness: 3.2mm
• Bore Diameter: 25.4mm (1 in.)
• Tooth Count: 120
• Tooth Geometry: TCG Negative Rake
• Application: Non-Ferrous Metals and Plastics
• Country of Origin: Italy

Approved Applications

• Aluminum (sheet, extrusion, plate)
• Brass
• Copper
• Plastic panels and sheet stock
• Composite materials
• Panel saw operations
• Multi-rip saw operations
• Industrial table saw operations

Frequently Asked Questions

Why does this blade use a negative rake angle instead of a positive rake?

A negative rake angle causes each tooth to engage the workpiece more gradually and with greater control. In non-ferrous metals like aluminum and copper, and in plastic sheet materials, a positive rake angle can cause the blade to grab, self-feed aggressively, or produce torn edges. The negative rake geometry on this blade slows engagement, reduces grabbing, and delivers cleaner, safer cuts in these specific materials.

What is TCG tooth geometry and why is it used for non-ferrous and plastic cutting?

TCG stands for Triple Chip Grind. The tooth pattern alternates between a flat-top raker tooth and a trapezoidal (chamfered-corner) tooth. The trapezoidal tooth scores the outer edges of the cut while the flat raker clears the center, breaking chips efficiently and preventing the tearing or melting that can occur with other geometries when cutting aluminum, brass, copper, and plastics.

Is the 25.4mm bore compatible with standard industrial panel saw arbors?

Yes. A 25.4mm bore corresponds to a 1 in. arbor diameter, which is a common arbor size on industrial panel saws, multi-rip saws, and large-format industrial table saws. Always confirm your specific machine's arbor diameter before mounting any saw blade.

What is the difference between the 4mm kerf and the 3.2mm body thickness?

The kerf width (4mm) refers to the total width of material removed by the cutting teeth, while the body thickness (3.2mm) is the thickness of the steel plate that makes up the blade disc. The 0.8mm difference provides clearance between the blade body and the walls of the cut, reducing friction, heat buildup, and blade binding - particularly important during extended production runs on soft metals and plastics.