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Technical Whitepapers
​CNC Router Bit Breakage

Causes for CNC Router Bit Breakage


Common Tool Breakage Issues
Possible Cause: Remedy
•Deflection- cutting edge too long: Select a tool with cutting edge not more than ¼” longer than material thickness.
•Bad or worn collets: Check tool shank for evidence of chatter marks. When visible, replace collets.
•Over-torquing: If tool breaks in the shank area, tightening the collet nut to incorrect torque can cause tool breakage. Invest in a setup-fixture and torque wrench.
•Overheating: If signs of heat buildup are in the tool flute, check chip load and adjust feed/speed.
•Part Movement: Improve vacuum hold-down.
•Too much pressure on the tool tip: For rebates, grooves, and slots, use the shortest length to avoid tool breakage.
•Tool slippage in the collet: Replace static collet nut with a bearing nut.
 
​
Picture
Solid Carbide Router Bits come in a variety of tool geometries, number of flutes, and edge grind for a variety of applications. Also available are coated bits that can provide longer tool life.
• O-Flute, Up Cut (Plastics, Aluminum)
• Up Cut
• Down Cut
• Ball Nose Up Cut (Carving)
• Compression (Mortise Compression)
• Compression Chip Breaker
• Up Cut Chip Breaker
• Down Cut Chip Breaker
• Up Cut Rougher
• Down Cut Rougher
• Single, Two and Three Flutes
 
​

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  • Home
  • CNC Products
    • CNC ROUTER BITS >
      • Spiral & Compression CNC Router Bits >
        • CNC Router Bits-Standard Life Series >
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            • CNC Router Bits-(1) Flute Up Shear-105 Series >
              • CNC Router Bits-(2) Flute Up Shear-120 Series >
                • CNC Router Bits-(3) Flute Up Shear-160 Series
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                • CNC Router Bits-(4) Flute Up Shear-Rough-Finish 500 Series
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                • CNC Router Bits-(3) Flute Down Shear-150 Series
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            • CNC Router Bits-(2) Flute Down Shear Chip Breaker-205 Series >
              • CNC Router Bits-(3) Flute Down Shear Chip Breaker-225 Series
            • CNC Router Bits-(2) Flute Down Shear Rougher-390 Series >
              • CNC Router Bits-(3) Flute Down Shear Rougher-410 Series
              • CNC Router Bits-(4) Flute Down Shear-Rough-Finish 495 Series
          • CNC Up/Down Compression-Router Bits >
            • CNC Router Bits-(1) Flute Compression-250 Series >
              • CNC Router Bits-(2) Flute Compression-265 Series >
                • CNC Router Bits-(3) Flute Compression-275 Series
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            • CNC Router Bits-(2) Flute Compression-Chipbreaker 300 Series >
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        • CNC Router Bits-Ultimate Wear Life Series >
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          • CNC Router Bits-(2) Flute Compression-347 Ultimate Series with Mortise
          • CNC Router Bits-(3) Flute Compression-361 Ultimate Series
          • CNC Router Bits-(3) Flute Compression-367 Ultimate Series Mortise
      • CNC Coated Router Bits
      • Plastics, Solid Surface, Aluminum CNC Router Bits >
        • CNC Router Bits-(2) Flute Down Shear-Slow Spiral-130 Series >
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          • CNC Router Bits-(2) O-Flute Spiral Down-590 Series
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          • CNC Router Bits-(2) O-Flute Spiral UP-610 Series
      • Accessories for CNC Router Bits
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      • InsertTooling-HSK-63F Spiral Head
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