If we often use a chainsaw, its chain will dull or break over time. While in the first case, it can still be sharpened; in the second case, we will not avoid exchange. How to choose a new chain for your saw? Here is a short guide that will help us!
Types of cutting teeth
Contrary to appearances, the shape of the teeth largely determines what we will use the tool for. There are three types of them on the market:
– sharp teeth (“full chisel” or “square”) – most often used in chainsaws used for forestry work, because they are characterized by exceptional performance. Remember, however, that they can only be used on a clean surface that is not contaminated by earth or sand;
– rounded cutting teeth (“half chisel”) – can be used on lightly soiled wood. With their use, it cuts reasonably quickly, which allows their use by both professional and hobby users;
– cutting teeth with a beveled profile (“beveled chisel”) – do not require complicated and frequent maintenance, so they are best suited as hobby tools that are used sporadically. Low vibration and reflection are in their favor.
The role of the pitch in choosing a chain for a saw
The ball is nothing but the length of the chain link to the saw. How to calculate it? Just measure the distance between the axis of the first and third rivets of the chain and divide it in half. The value, although measured in millimeters, should be given in inches. Importantly, the pitch must be the same for all components of the cutting system, i.e., for the chain, guide bar, and clutch drum. The most common chain intervals on chainsaws are:
– 1.4 inches – they are used for the care of fruit trees and for carving on a wooden surface;
– 1.8 inches – it will be used for the preparation of firewood and for small garden works;
– 0, 325 inches – cut the wood into medium-sized pieces using a chain with this scale;
– 0.404 inch – suitable for forestry work, for the preparation of large-format fuel and for thinning. We will read in this article about how to choose such a professional tool.
Do you know that…
Why don’t we measure the distance between adjacent rivets here? Because the distance between them is not the same, the result would be imprecise.
It is worth knowing that the scale is the main criterion by which a chain saw is mapped to a specific performance class. Knowing it, we can also determine the size of the cut, i.e., the trace of the incision with the blade.
Thickness and number of links in a chainsaw
We measure the width of the chain link to the saw in the part of the relationship that enters the groove of the guide bar. It is given in millimeters, and the most common values are 1.3 mm, 1.5 mm, and 1.6 mm. An incorrectly selected cell thickness can make the device work unevenly, posing a danger to the person who uses it.
The number of guide links simply means the number of links that move simultaneously in the guide groove. There are usually two times more than the chain saw teeth.