There are a couple of different ways to determine the correct belt size to fit your machine. The pictures shown are for a 1″ x 30″ long belt. If you have an old, worn out belt, simply cut the belt apart.
You can measure a brand new belt by easily first measuring the width, then laying the belt down as flat as possible without bending or creasing the belt in a way that will damage it, measuring from one end to the other, then DOUBLING the size as this is a belt and NOT a flat sheet in this instance. The second way would be to take your belt and easily measure the width of the belt. This measurement will give you your belt LENGTH. This is the best method for measuring your sanding belt if it is an old, used belt that you don’t care to use anymore.
If you don’t know the correct belt dimensions for your belt sander, there are four quick and easy methods you can use to determine the correct belt size. Tube Belt Sanders:Tube belt sanders consist of a pulley system that contours the sanding belt around tube-shaped surfaces. It’s very likely that your sanding belt will be one of several common sizes for sanding belts that we sell.
If you have an old worn out belt that you’re going to throw out, cut it in half, lay it out on a flat surface and measure the length to get the total belt length. Double the length you just measured and you’ll have the total belt length. Measuring to ensure you have the correct belt length is a simple but VERY important process.
how to measure for a sanding belt Related Question:
What size belt sander should I get?
SIZE. The size of a belt sander is measured by the width and length of the belt. Belts range in size from small, detail-type sanders with belts that are only an inch or two wide to heavy-duty 4″ x 24″ machines. A common size for home shop use is a 3″ x 21″ sander.
How do you measure sandpaper on a belt sander?
Roll the belt along the floor until you come to the mark on the back of the belt again and mark the floor again. Now take a tape measure and measure the distance between the marks this will be your length. Option #3 Cut the existing belt in half and lay flat. Measure the belt along one side to get an accurate size.