Product Description
CMT Reversible Throwaway Carbide Insert Knives - 7/8 x 3/4 x 3/32 inch, 10-Piece Pack are precision-ground, solid carbide cutting inserts engineered for spindle moulders, profile machines, and compatible insert shaper cutter head systems. Built from K1920 carbide grade material and ground to a 30 deg. cutting angle, these reversible throwaway knives deliver consistent profile quality across hardwood, softwood, MDF, chipboard, and plywood. Each pack includes 10 knives, giving you ready access to fresh cutting edges and minimizing downtime during production runs.
Key Features
- K1920 Carbide Grade Material - a high-performance tungsten carbide formulation that maintains a sharp cutting edge longer than standard steel inserts, extending tool life on demanding materials including hardwood and MDF.
- 30 deg. Cutting Angle - engineered for smooth, clean shearing action on wood and engineered panel products, reducing tear-out and producing consistent profile finishes across softwood, hardwood, and composite materials.
- Reversible Design with 3 Cutting Edges - rotate the insert to a fresh edge when one dulls rather than replacing the knife immediately, maximizing value and reducing per-edge tooling cost.
- Precision-Ground to Exact Tolerances - each knife ground to tight dimensional accuracy at 22mm length x 19mm height x 2mm thickness, ensuring repeatable profile consistency and proper seating in the cutter head.
- Standard Throwaway Insert Format - designed for fast changeover in production environments; when all edges are spent, the insert is simply replaced without any re-grinding or resharpening required.
- 10-Piece Pack - provides a practical supply of replacement inserts to keep on hand, reducing interruptions on the shop floor during extended moulding or profiling operations.
Why This Product
- The reversible, 3-edge design means each knife delivers multiple full cutting lives before replacement - a practical way to lower tooling costs per linear foot of moulded profile without sacrificing cut quality.
- K1920 carbide construction holds up against abrasive materials like MDF, chipboard, and plywood where steel knives dull quickly, making these inserts well suited for production shops running mixed material types.
- The 30 deg. cutting geometry and precision-ground dimensions ensure consistent profile results run after run - critical when matching profiles across long production batches on spindle moulders and profile machines.
- The throwaway format eliminates re-grinding time and cost; when inserts are spent, changeover is fast and straightforward, keeping machines running and throughput high.
Specifications
- Manufacturer Part Number: 790.220.02
- Brand: CMT Orange Tools
- Knife Dimensions: 7/8 x 3/4 x 3/32 inch
- Total Length: 22mm
- Cutting Depth: 19mm
- Cutting Height: 19mm
- Teeth Thickness: 2mm
- Diameter: 22mm
- Number of Teeth: 3
- Cutting Angle: 30 deg.
- Material: K1920 Carbide
- Knife Type: Reversible Throwaway
- Quantity: 10-Piece Pack
Approved Applications
- Spindle Moulder
- Profile Machine
- Edging Machine
- Router Table with Cutter Head
- Hardwood Moulding and Profiling
- Softwood Moulding and Profiling
- MDF Profiling
- Chipboard Cutting
- Plywood Edge Profiling
Frequently Asked Questions
What does "reversible throwaway" mean for these carbide insert knives?
Reversible throwaway knives are designed with multiple usable cutting edges - in this case 3 - so you can rotate the insert to a fresh edge when one becomes dull. Once all edges have been used, the insert is discarded rather than re-ground. This format reduces resharpening costs and downtime while keeping machines in production.
What is the cutting angle on these insert knives?
These knives are ground to a 30 deg. cutting angle, which is the standard geometry for reversible throwaway insert knives in this product family. This angle provides an effective shearing action on hardwood, softwood, MDF, and other panel materials.
What are the exact knife dimensions?
Each knife measures 7/8 x 3/4 x 3/32 inch - corresponding to 22mm total length, 19mm cutting height, and 2mm thickness. These dimensions follow the L (length) x H (height) x K (thickness) convention referenced in the CMT product family specifications.
What carbide material grade are these knives made from?
These insert knives are manufactured from K1920 grade carbide. This is a high-quality tungsten carbide formulation selected for durability and cutting performance on wood and engineered wood panel materials including MDF, chipboard, and plywood.
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