The following chart shows typical end-of-life conditions and possible solutions to improve tool life.
Problem: Carbide Fracture
Possible Cause
- Hard cutting conditions
- Extreme impact
Recommended Solution
- Contact your Kennametal Sales Representative for a full evaluation.
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.
Problem: Excessive Carbide Wear
Possible Cause
- Very abrasive cutting conditions
- High rotation speed
- Cutting too deep
Recommended Solution
- Adjust rotation and feed of machine.
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.
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.
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.
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.
Problem: Broken Hub/Hub Failure
Possible Cause
- Worn-out block: lateral play
Recommended Solution
- Contact your Kennametal Sales Representative for a full evaluation.
Problem: Retainer Failure
Possible Cause
- Worn-out block: lateral play
Recommended Solution
- Contact your Kennametal Sales Representative for a full evaluation.
Problem: Sleeve Breakage
Possible Cause
- Hard cutting conditions
- Worn-out sleeves
Recommended Solution
- Contact your Kennametal Sales Representative for a full evaluation.
