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The following chart shows typical end-of-life conditions and possible solutions to improve tool life.

 

Carbide Fracture

Problem: Carbide Fracture

Possible Cause

  • Hard cutting conditions
  • Extreme impact

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.

 

Thermal Cracking

Problem: Thermal Cracking

Possible Cause

  • Hard cutting conditions
  • Lack of penetration
  • Grinding of material not conveyed
  • Excessive heat generation during cutting

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.

 

Excessive Carbide Wear

Problem: Excessive Carbide Wear

Possible Cause

  • Very abrasive cutting conditions
  • High rotation speed
  • Cutting too deep

Recommended Solution

  • Adjust rotation and feed of machine.

 

Steel Wash

Problem: Steel Wash

Possible Cause

  • Grinding of material not conveyed
  • Abrasive cutting conditions

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.
  • NB tip, X-series, hardfacing.
  • Increase feed.
One-Sided Steel/Wear on Gage

Problem: One-Sided Steel/Wear on Gage

Possible Cause

  • Conical not rotating
  • Misaligned blocks
  • Sticky cutting conditions
  • Worn blocks
  • Excess material build-up on tool

Recommended Solution

  • Clean the conical for foreign particles.
  • Tap the conical.
  • Contact your Kennametal Sales Representative for a full evaluation.

 

Shank Breakage

Problem: Shank Breakage

Possible Cause

  • Worn block bore
  • Worn-out sleeve
  • Hard cutting conditions
  • Blunt/missing cutting tip

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.

 

Shank Bending

Problem: Shank Bending

Possible Cause

  • Worn block bore
  • Worn-out sleeve
  • Hard cutting conditions
  • Blunt/missing cutting tip

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.

 

Broken Hub/Hub Failure

Problem: Broken Hub/Hub Failure

Possible Cause

  • Worn-out block: lateral play

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.

 

Retainer Failure

Problem: Retainer Failure

Possible Cause

  • Worn-out block: lateral play

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.

 

Sleeve Breakage

Problem: Sleeve Breakage

Possible Cause

  • Hard cutting conditions
  • Worn-out sleeves

Recommended Solution

  • Contact your Kennametal Sales Representative for a full evaluation.