WHAT DO THE NUMBERS ON OREGON CHAINSAW CHAINS MEAN?

 If you're a chainsaw enthusiast or if you've ever had to replace a chainsaw chain, you've probably come across a string of numbers and letters stamped on the drive links of the chain. These alphanumeric codes may seem like a secret language, but they are essential for ensuring that your chainsaw operates safely and efficiently. In this article, we'll decipher the meaning behind these numbers on Oregon chainsaw chains, brought to you on behalf of the online store Westcoast Saw, using their valuable guide on "SAW CHAIN IDENTIFICATION."



Gauge


Let's start with the gauge. The chain gauge is the thickness of the drive link where it fits into the guide bar groove, and it must match the gauge of the guide bar. Oregon offers chains in several gauges: .043", .050", .058", and .063". But why is this important?


The gauge of your chainsaw chain has a significant impact on the overall performance of your chainsaw. A mismatch between the chain's gauge and the guide bar can result in poor cutting performance and even safety hazards. Therefore, it's crucial to measure and order the correct gauge. However, as chains wear with time, it can be challenging to accurately measure the gauge. To overcome this, always order a replacement chain by referring to the number stamped on the drive link of your old chain to ensure a precise fit. You can find a reference table on Westcoast Saw's website for more detailed information about Oregon chain gauges.


Pitch


Moving on to pitch, this is another vital aspect of chainsaw chains that you should be aware of. The chain pitch is the size of the chain and is defined as the distance between any three consecutive rivets divided by two. Oregon manufactures chains in various pitches, with 1/4" being the smallest, 3/8" being the most popular, and 3/4” being the largest.


Understanding the pitch is crucial because the drive sprocket on your chainsaw must match the pitch of the chain. Additionally, the bar nose sprocket, if applicable, should also have the same pitch. To find out the pitch of your chain, you can simply look at the number stamped on the drive link. Detailed information about Oregon chain pitches can be found in the reference table provided by Westcoast Saw.


Cutter Type


Now, let's delve into the cutter types, which play a significant role in the cutting performance of your chainsaw. Oregon offers various cutter types, and each type is designed for specific cutting tasks. The five primary cutter types are:


  1. Chipper

  2. Semi-Chisel

  3. Chamfer-Chisel

  4. Micro-Chisel

  5. Chisel


Choosing the right cutter type depends on the kind of wood you're cutting and the level of precision and durability you require. Each cutter type has its advantages and disadvantages, so it's essential to understand your cutting needs to select the appropriate one for your chainsaw chain.


Sequence


Last but not least, it's important to consider the sequence of your saw chain. Chainsaw chains come in three primary sequences:


  1. Standard

  2. Semi-skip

  3. Skip


The sequence of your chain impacts its cutting efficiency and performance. Standard chains have a more continuous sequence of cutting teeth, which provides a smooth and consistent cut. Semi-skip chains have a mix of cutting teeth and connecting links, making them a good choice for a balance between speed and precision. Skip chains, as the name suggests, have fewer cutting teeth, which can offer faster cutting in certain applications.


In conclusion, understanding the numbers and letters stamped on your Oregon chainsaw chain is crucial for maintaining the safety and performance of your chainsaw. The gauge, pitch, cutter type, and sequence are all essential factors to consider when choosing a replacement chain. Always refer to the number on your old chain's drive link and consult Westcoast Saw's reference table for more in-depth information to make an informed decision when selecting your chainsaw chain. Choosing the right chain will not only make your chainsaw more efficient but also ensure that your cutting tasks are completed effectively and safely.

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