What Do the Numbers on a Stihl Chainsaw Bar Mean?



What Do the Numbers on a Stihl Chainsaw Bar Mean

The numbers on a Stihl chainsaw bar indicate bar length, pitch, gauge, and drive link count, essential for choosing the right chain.

When it comes to getting the perfect cut, using a Stihl chainsaw means business. However, with various sizes and types available, it’s crucial to understand the numbers on your Stihl chainsaw bar. These numbers are not there for show; they provide essential information to ensure you get the right bar for your needs. In this guide, we’ll delve into what these numbers mean and how to use them to your advantage.

Understanding the Guide Bar Numbers

Stihl chainsaw bars come with a series of numbers that can seem puzzling at first glance. But these numbers hold key information regarding the bar length, pitch, gauge, and drive link count – all critical aspects for your chainsaw’s performance. Let’s break down these numbers:

Number PositionMeaning
First NumberBar Length – Measured from the front of the saw to the furthest cutting tip lengthwise, typically in inches.
Second Number SetPitch – A measurement indicating the size of the chain. It measures the distance between three consecutive rivets divided by two.
Third NumberGauge – Represents the thickness of the drive links and is critical for ensuring a proper fit with the bar.
Fourth Number SetDrive Link Count – The total number of drive links which should match the chainsaw bar for compatibility.

Deciphering these numbers will assist you in selecting the right chainsaw bar for your requirements, whether for professional forestry work or home yard maintenance.

How to Read the Stihl Chainsaw Bar Numbers

On your Stihl chainsaw bar, you may see a number sequence like this: 18 3/8″ .050″ 66. Let’s decipher this example:

  • 18 – The length of the chainsaw bar is 18 inches.
  • 3/8″ – The pitch of the chainsaw chain is 3/8 inch, a common size for many Stihl chainsaws.
  • .050″ – The gauge of the bar is .050 inches; this gauge size fits the respective drive link thickness.
  • 66 – The number of drive links on the chainsaw chain to match the bar length.

To ensure your chainsaw functions correctly, you’ll need a chain with drive links that fit snugly in the bar’s groove and a length that corresponds to the bar length measurement. Confirming these details is pivotal prior to purchasing a replacement bar or chain.

Why Knowing these Numbers Matters

Understanding the numbers on your Stihl chainsaw bar is not just about replacing parts. It’s also about:

  • Maximizing the efficiency of your work.
  • Ensuring safety while operating the chainsaw.
  • Minimizing wear and tear on your chainsaw.
  • Choosing the right bar and chain for the type of cutting task.

Using a chainsaw with incompatible bar and chain measurements can lead to dangerous situations and also affect the lifespan of your chainsaw. Remember, these numbers are Stihl’s way of helping you maintain optimal performance and safety.

Tips for Chainsaw Maintenance

Alongside knowing the numbers on your Stihl chainsaw bar, regular maintenance is essential. Here are a few quick tips:

  1. Regularly check the chain tension to ensure it’s neither too tight nor too loose.
  2. Keep the chainsaw bar groove clean to prevent buildup and ensure smooth chain movement.
  3. Inspect and replace worn-out sprockets as they can cause premature chain wear.
  4. Use the correct bar and chain oil to minimize friction and prevent overheating.

By incorporating these practices, you’ll keep your Stihl chainsaw in prime condition, making the task at hand that much simpler and safer.

Keep up with the latest in chainsaw know-how by staying tuned to our Knowledge categoryChainsaw Hive is here to equip you with top-tier chainsaw wisdom and advice.

To know more: How to Tell If Chainsaw Clutch is Bad

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