Is high speed and low torque better than low speed and high torque?

Introduction

When determining the best drill settings, several factors come into play. What type of work are you planning to perform? Which tools are you using? What power source do you have available?

Torque and speed settings for descaling and blockage removal

For descaling pipes, higher speed and lower torque are recommended. This setup generates the centrifugal force needed for the chain to centralize within the pipe. The chain’s momentum effectively removes tuberculation, limescale, urine scale, and rust.

For clearing blockages, higher torque and lower speed are more effective. Blockages often need to be ground down, especially when using a root-cutting tool to tackle thicker roots. Even with thinner roots, greater torque is required.

For softer blockages such as fatty deposits or wet wipes, torque remains essential when the pipe is completely filled. However, when the pipe isn’t entirely clogged, higher speed settings can help chains grind through the soft blockage more efficiently.

We’ve created this helpful video on adjusting drill settings to maximize efficiency and minimize accidents or damage to your flexible shaft.

Lightweight or heavy-duty chains?

Please note that heavy-duty chains require more torque than lightweight ones. If you’re using a lightweight chain, a smaller power source can often achieve the desired effect. Heavy-duty chains, designed for 10mm and 12mm shafts, are better suited for larger power sources.

Another thing to bear in mind is that if you are using a plain chain with a crown drill head (https://zewer-tools.com/heavy-duty-plain-chain-with-crown-drill-head/) inside a PVC pipe, then it is imperative that you reduce the amount of torque as you pass through a 90 degree junction to prevent the crown drill head from biting into the pipe wall of the junction.

Conclusion

Selecting the appropriate drill settings depends on the type of job and the tools you’re using.

• For descaling, prioritize speed for greater centrifugal force.
• For blockages, use higher torque. For soft blockages that don’t completely fill the pipe, higher speed settings are often more effective.
  

Finally, always consider your power source when choosing the right tools and settings for the task at hand.

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