It is essential to have the correct sawchain for your chainsaw. Professional users know which pitch, guage and length chain they have for their saws and guide bars.
Pitch:this refers to the distance between the centre of each drive link, specified by length.An easier way to calculate this is shown in the picture below:measure from the centre of the rivet to the centre of the next rivet but one.
This value is the divided by two and is usually expressed as a decimal value of one inch:i.e. 0.375, 0.325, 0.404 etc.(.375 is more commonly known as 3/8).
Chain guage (the thickness of the sawchain) is measured as shown:
New lightweight hoby saws will these days have a guage of 0.043 (1.1mm).
Older hobby saws will have a guage of 0.050 (1.3mm).
0.325 saws have guages of 0.050 (1.3mm) 0.058 (1.5mm) or 0.063 (1.8mm).
0.375 chains have guages of 0.050 (1.3mm) 0.058(1.5mm) or 0.63 (1.8mm).
Normally only Stihl Chainsaws are fitted with 0.063 chains and then only professional models. The vast majority (99%) will have .043, .050, or .058 chains.
Length: this refers to the physical length of the chain loop.It is calculated by counting the number of drive links on the chain loop. Normally the chain loops are an even number and usually divisible by four although the trend recently has been to produce lengths which are both odd numbers and non divisible. The majority of imported "budget" saws also have large distances between the cutters; an attempt to reduce costs and not overburden the poor quality engines with too much "loading".
To assist better quality chainsaws usually have all the information you require stamped/etched or engraved onto the guide bar:
Carlton chain is supplied as shown in the picture below.
click on anatomy heading or image to download a Pdf.
PLEASE ENSURE YOU ARE ACCURATE WITH ALL THE ABOVE MEASUREMENTS. WE ARE UNABLE TO ACCEPT RETURN OF CHAIN YOU HAVE ORDERED INCORRECTLY.
Price: 30p per drive link.
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