“The 73 on the drive link means its a.058 gauge chain. If your bar is 20″ then it’s 72 drive links long, in a.058 gauge. Anything from a 16″ to 72” in that gauge will have 73 stamped on the drive link, it bears no relevance to the length.
Normal wear can make it difficult to accurately measure chain gauge on a worn chain. “Chain pitch is the size of the chain and is defined as the distance between any three consecutive rivets divided by two. Oregon chain is made in several pitches – 1/4″ is the smallest, 3/8″ is the most popular, and 3/4” is the largest. Saw chain sequences include: standard, semi-skip, and skip.
We supply Oregon chains so if your chain is a different make please refer to our conversion chart below for the equivalent Oregon number. Click on the chain number below to take you to the correct chain page and then enter your link count using the drop down. Once you have this information use the chart below to identify your chain type and follow the link to the chain page.
72.John DeereNotesBar LengthReplacement Chain SizeNumber of Drive Links8, 9, 61, 81, 91Chain length may vary depending on make of bar. 78.2036, 2040Some models used 3/8″.050 chain. “Models with chain brakes use 3/8” low profile chain.
72 vs 73 chainsaw chain Related Question:
What does 72 mean on a chainsaw chain?
For chainsaw models that run 3/8 Inch Pitch, .050 Inch (1.3 mm) gauge, 72 drive links. Precision, heat-treated semi-chisel chain cuts smoothly with a higher tolerance for debris.
What chainsaw pitch is best?
Experts say the best chainsaw chain for cutting firewood is the Husqvarna High Performance 18 inches, 0.05 gauge, 0.325 pitch chain.
Does chain gauge matter on a chainsaw?
The gauge measurement of a saw chain tells a pro user about the strength of a chain’s drive links. Thicker drive links are usually stronger, but they are heavier. Weight affects performance, and to maximize cutting speed, weight should be kept to a minimum.