Belt sanding

When sanding with a belt, many things must be considered to get the best result and the highest possible efficiency. The choice of sanding grain material, for example, is critical, but other factors such as adjustment of sanding unit, sanding speed selection, and handling are also essential.
When you choose a belt from Mirka, you can be confident that you will get the most efficient sanding results without compromising the quality.

  • Increase profit

    Overall sanding costs can be minimised simply by choosing the most suitable
    product for each sanding operation. That means:

    Choosing the right type of grit and coating

    Using the optimal grit sequence

    Avoiding sanding with finer grits than necessary

  • Sand longer

    The lifespan of the belt can be prolonged by ensuring that the sanding equipment is correct and used properly.

    Choose the right type of sanding unit for each sanding operation

    Adjust the sanding machine correctly

    Ensure the machine is properly maintained

    Check that the dust extraction is adequate

In general, the first sanding belt is used for stock removal, while the following belts are only used for creating an even surface finish.

Typically, the first sanding unit consists of a drum made of materials such as steel or hard rubber. The drum, in combination with coarse grit (P36–P100) belts, is ideal for efficient stock removal. When it comes to producing an even surface finish, sanding units that incorporate soft rubber drums or sanding pads are normally used. In these units the grit range varies from P120–P320. For sanding between coats or intermediate sanding, grits P320–P800 are most commonly used along with a very soft rubber drum or a soft sanding pad.

When choosing a grit size the recommendation is to select belts that are only one step from each other in grit sizes. For example, P80–P120–P180 are appropriate steps, whereas P60–P120–P220 often results in problems with the surface finish and product lifespan.

Recommended grit size use

In general, the first sanding belt is used for stock removal, while the following belts are only used for creating an even surface finish.

P24-P80: Coarse sanding, calibration

100-P220: Sanding before coating

P220-P500: Intermediate sanding

P600-P1200: Pre-polishing sanding

 

Mirka Belt Range Guide

Download this guide to find out which belt abrasives are best for the type of sanding you will be doing, and what substrate you will be sanding.

We currently have some Belt sizes available in the following brands: Hiolit Xo, Ultimax, and Abranet Max.

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Browse the Belt range guide above. If you would like an abrasive we don't currently stock, fill out the form below and we will contact you soon.

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