When choosing a chainsaw chain, you will often see a number followed by the letters “DL.” This stands for Drive Links, and it plays a critical role in chain fit, safety, and cutting performance.
What Are Drive Links?
Drive links are the lower portions of the chain that sit inside the guide bar groove. They engage with the sprocket and pull the chain around the bar during operation.
Why Drive Link Count Matters
The total number of drive links determines whether the chain fits the guide bar correctly. Too few drive links and the chain will be too short; too many and it will not tension properly.
- Controls overall chain length
- Ensures proper engagement with the sprocket
- Affects chain tension and stability
DL vs Bar Length
Bar length alone does not determine drive link count. Two chainsaw bars with the same length may require different DL counts depending on the bar mount, pitch, and manufacturer.
How DL Works with Pitch and Gauge
Drive links must match both the pitch and gauge of the saw. A correct DL count with an incorrect gauge or pitch will still result in an unsafe or unusable chain.
Where to Find the Correct DL Number
The correct drive link count is usually stamped on the guide bar or listed in the chainsaw’s manual. It may also be printed on the original chain packaging.
Common Problems Caused by Incorrect DL
- Chain slipping or derailing
- Inability to tension the chain properly
- Uneven wear on bar and sprocket
Can Chains with the Same DL Fit Different Saws?
Chains with the same drive link count can fit multiple saw models only if pitch and gauge also match. DL alone is not enough to ensure compatibility.
Conclusion
DL, or Drive Links, defines the exact length of a chainsaw chain and is essential for safe operation. Always match drive link count along with pitch and gauge to ensure proper fit and performance.
