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Best Practices to Maximise Tool Performance

retainer

1. Never reuse retainers — ALWAYS use a new retainer with each new conical.

Replace worn-out, blunt, or dull conicals, and worn-out blocks immediately to decrease load on other machine parts.

Benefits:

Increase productivity. 

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2. Always maintain proper tension on trencher chain.

Benefits:

Longer tool life.

Increase productivity. 

3. Conicals must rotate freely in the block.

If the conical is stuck, tap with brass or rubber mallet. When installing new tools, clean out the block bore to ensure conical rotates freely.

Benefits:

Ensure uniform wear on conical.

Keep conical sharp. 

4. Use correct tools when installing conicals

Either a Kennametal recommended tool or a brass or lead-fi lled rubber-coated mallet. Never use a steel hammer or strike tools with metal objects.

Benefits:

Avoid shattering or damage to carbide tip. 

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5. Maintain proper collar diameter of the conical.

Be sure blocks are welded at the original angle.

Benefits:

Avoid damaging the block.

Incorrect block placement can result in excessive wear on the conical, block, or other machine parts.

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6. Make sure conicals are retained properly in the block.

Benefits:

Avoid safety hazards. 

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7. Do not use chains, drums, or wheels with missing conicals.

This causes excessive load on other conicals and machine components.

Benefits:

Improve productivity

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8. Maintain proper RPM and feed rates as per cutting conditions.

Benefits: 

Extend tool life.

Increase productivity. 

9. Maintain proper gage length of the conical.

Too short of a gage length can affect the width of cut and cause excessive load on other machine components. 

Selecting Proper Tools and understanding wear progression.

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Benefits:

Increase tool utilisation.

Avoid catastrophic failure.

Maximise cutting performance.

Reduce machine wear-and-tear. 

 Selecting the right tip for your machine and application

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Plug 

Maximum toughness.

Physical lock between steel and carbide.

Conditions: hard rock, chunk rock, shot rock, mixed rock, and dirt.

Ideal for excessive impact. 

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Cap 

Maximum abrasion resistance.

Rely on braze joint strength to hold tip to steel body.

Conditions: softer, more abrasive material.

Helps divert material away from steel body, reducing steel wash.

Areas with uninterrupted cuts. Will not withstand high impact. 

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NB – Narrow Bottom

Combination of a cap and a plug, with superior strength and abrasion resistance.

Conditions: excels in hard, abrasive material.