How Much Tension Should A Belt Sander Have? - 2

Published on: 2023-12-15 11:18

Measuring Belt Tension

Most belt sanders need certain conditions to work properly. For example, if you are using 80-durometer steel or rubber contact roller heads, apply a pressure of 20 to 25 pounds per linear inch of belt width. For platen and combination heads, apply 15 to 20 pounds of pressure.

There is a wide variety of tools available for measuring belt tension, including specially designed tools. You can use an OEM-recommended belt tension gauge, but standard air regulators can also be converted into measuring tools.

The regulator should have two outlet ports and one inlet port. Attach an air cap to the inlet port that corresponds to the air line coupler closest to the belt sander. Next, fit a good pressure gauge to one of the outlet ports. The other must match the thread of the belt tension gauge.

Once the tool is complete, thread the gauge into the outlet and connect the air supply line to the regulator. To determine the accuracy of the readings, compare the correct gauge with the suspect gauge at different PSI levels.

Beware Of Air Leaks

Problems with the tensioning of abrasive belts can be caused by air leaks, which are common in installations using compressed air. There may be leaks in the air supply system and in the joints of the tensioning cylinders. Make sure that all leaks are repaired and that periodic air checks are carried out throughout your installation. A more efficient compressed air system can save you money.

Sanding Belt Tension Formulas

Use the following formula to calculate the correct tension for your sanding belt.

Generally speaking, wood sanding applications such as mold sanding (using narrow cloth belts) require belt tensions of approximately 40 psi. There are, however, some exceptions. In planning operations, for example, belt tension is typically between 70 and 90 psi.

For intermediate wide belt sanding, a tension of 60 to 75 psi is usually used. (Intermediate usually refers to 60 to 220-grit abrasives.) Paper belts should be tensioned at about 20 to 25% less than cloth belts in these applications. This is because cloth belts stretch slightly during use, while paper belts do not. To determine specific air tension settings, consult the manufacturer of the wide belt machine.

In drawer sanders, which sand the inside lip of a drawer front, it is best to use the least amount of belt tension. If you turn off the machine, you should be able to rotate the belt by hand easily. If the belt has stretched after 10 minutes of use, increase the tension of the sander.

Recommended Posts

Know More About Backing - Film Backing.copy

04-11 2024

Film is a more recent development in the production of coated abrasives. Film media are made from a plastic sheet of uniform thickness. They fall somewhere between paper and cloth abrasives and are often considered the best of both worlds. Plastic is unlikely to tear and is light enough to be molded into precise shapes. Film backing is also waterproof and can be used for wet sanding applications. Film is well suited to automotive work that features many contours and requires fine polishing. Advantages Lasts longer than paper Tear resistant Flexible enough to match contours Waterproof Disadvantages More expensive than paper Usages Metal and automotive work Wet sanding Sanding complex contours and shapes
Know More About Backing - Film Backing

04-11 2024

Film is a more recent development in the production of coated abrasives. Film media are made from a plastic sheet of uniform thickness. They fall somewhere between paper and cloth abrasives and are often considered the best of both worlds. Plastic is unlikely to tear and is light enough to be molded into precise shapes. Film backing is also waterproof and can be used for wet sanding applications. Film is well suited to automotive work that features many contours and requires fine polishing. Advantages Lasts longer than paper Tear resistant Flexible enough to match contours Waterproof Disadvantages More expensive than paper Usages Metal and automotive work Wet sanding Sanding complex contours and shapes
How Best To Store Abrasives?

03-19 2024

Proper storage of abrasives is essential to ensure that they work at their best and last longer. Otherwise, their performance and lifespan can suffer. In this article, we will explain the best way to store abrasives, using sanding belts as an example. It is recommended to store abrasive materials within a temperature range of 60°F-80°F while maintaining an ideal relative humidity of 45%. The level of relative humidity is a crucial factor in abrasive storage, as issues may arise when it fluctuates. For instance, the humidity levels in heated rooms tend to drop by approximately 15% at the beginning of the heating season while it goes up to 80% or even more after extended periods of rainy or foggy weather. If it's difficult to maintain ideal temperature and humidity conditions, ensure that coated abrasives are stored away from concrete floors, heaters, hot air ducts, and da...

E-mail: moosefos@moosefos.com

Tel: +86 15001165268

Add: No.29, Wangchao South Avenue, Beichen District, Tianjin City, China (300409)