5 Best Orbital Sanders: Reviews and Buying Guide (2018)

The orbital sander is a variant of the orbital sander. We are dealing with manual orbital tools and pneumatic tools in the classic orbital sander and eccentric. With eccentric grinders, smooth wood, plastic, glass or metal with a flywheel to which the sandpaper is attached. There are clamps or a Velcro fastener. With an additional dust extraction, you grind healthy and environmentally friendly.

At gmomf.org we put powerful orbital sanders into the comparison. We also provide practical tips to help you with your purchase. In our guide, you will learn everything about the appropriate sandpaper, the application, and the most important handles.

5 Best Orbital Sanders

What is an eccentric sander?

We would not do justice to the orbital sander if we describe it only as a classic orbital sander. Even his name should show us that we are dealing with a special tool. We can see a clear difference in terms of the movement of the sanding pad.

How does an eccentric sander work?

The sanding pad moves eccentrically. By comparison, only the plate oscillates in the orbital sander. Bosch has released the first orbital sander.

Working with an eccentric sander

Hold the device parallel to the work surface. It must not be placed on the workpiece during operation. Only switch on the eccentric grinder when the tool is resting on the workpiece. An exception is the devices with plate brake.

When working, dust is created. Especially when old paints are to be sanded, you should buy an eccentric sander with a dust extractor. Finally, the fine dust is hazardous to health. Shorten the working time best.

The eccentric sander without vibration damping pass on the strong movements to the device head. This has a negative effect on longer work because you feel the vibrations in your hands.

When orbital sander and when to use an eccentric sander?

Only at first glance does the orbital sander resemble a sander. We operate both tools by hand and benefit from a powerful electric motor. At the push of a button, the round grinding wheel starts moving. The orbital sander rotates the grinding wheel. At the same time, this disc acts eccentrically on the drive axle, which initiates star-shaped circular movements. The eccentric has a much higher removal rate. This has a particularly positive effect on the microsection.

The expensive eccentric grinder is equipped with a plate brake. The brake prevents unsightly scratches in the wood when the device hits the material at too high a speed, for example.

Orbital sander versus rotary sander

In woodworking, you do not get around grinding. Given the many different tools and grinders, the choice is not so easy. A very special guy always raises questions. We are talking about the rotary sander. The most obvious difference is between the orbital sander and the rotary sander in construction. The rotary sander has a 90 ° angled motor. With the eccentric sander, the motor sits above the sanding pad. This allows you to switch to the eccentric mode starting from the gearbox mode.

  • Gear mode: The grinding wheel and bevel gear start moving.
  • Eccentric mode: This is where a geared sander works in a similar way to the eccentric sander. The gear disc is free and vibrates.

We would better describe the whole thing as coarse-cut and fine-grinding mode. At work, these operating modes can be combined very well. So you would choose the coarse sanding with coarse sandpaper and switch off the fine abrasion with sandpaper with a finer grain size.

Which is the best eccentric sander?

When choosing different components play a crucial role. In principle, we should pay attention to a correspondingly high wattage when buying. In the direct eccentric sander comparison on STERN.de convince the powerful tools with a power consumption between 100 W and 300 W. In the power range of well over 500 W, we arrived at the professional equipment that we often do not need for the home improvement sector. These tools are designed for long-term operation.

In addition to the performance, the speed plays a crucial role in the purchase. As the speed increases, the grinding wheel can turn faster. The normal speed range is 12,000 revolutions/min. Under load, this corresponds to a speed of 6,000 revolutions/min. At best, you can set the speed of the tool individually and thus orient yourself to different materials.

Some manufacturers bring tools on the market, in which the sanding plates can be changed. Here you have the choice between softer and harder sanding plates, which at the same time increases the flexibility of the tool. Pay attention to a smooth running smoothness when buying. If you also have to do overhead work, the tool should be easy to hold. So if you want to reduce the risk of dents, you are in the right place with this tool.

Orbital sander types in overview:

  • Eccentric sander with electric motor: This tool is wired and is most commonly used. Your personal strength and a nearby power outlet are the prerequisites for use.
  • Pneumatic compressed air eccentric sander: This sander brings along a grinding head. He renounces the engine. You connect the device via a compressed air hose to the compressor. The performance of the compressor has a significant effect on the performance of the eccentric grinder.
  • Eccentric sander with rechargeable battery: Unlike the electric motor, this tool makes you independent of the power supply. Compared to the wired version of the battery has usually no such great performance. In addition, you must pay attention to a regular charge.

Eccentric sander – Which grain to choose?

The orbital sander with a grinding disc of 125 mm to 150 mm can be used for grinding walls in the shell. With the grinding of larger surfaces, you should consider whether a wall sander would not be the better choice.

Which eccentric sander for body work?

Also, fabrics and paints of bodies can be processed with an eccentric grinder. Many refinishers use a surface finish before applying the paint. In most cases, an orbital sander is also a polishing machine, provided you pay attention to the cleanliness of the device. For this, you need an interface pad. The commercial sanding pad would be too hard to polish clean. Not to paint, once you have polished in wood dust.

Which eccentric sander is suitable for wood?

Most orbital sanders are used for woodworking and wood finishing. Choose wood for the right sandpaper. In addition, you should sand the natural material in several steps. For example, if you remove varnish with an 80-grit sandpaper, you will then choose 120-grit sandpaper for the finish and 180 for the finish.

Especially with large surfaces scores the eccentric grinder. In terms of fine-tuning, it can hardly accommodate another tool with him. But for the edges and corners, you need another grinder. The delta grinder has proven to be practical for this function. You will recognize this tool by its shape, which resembles an iron and with which you can effortlessly grind into all corners. For rounding, it is best to use interface pads that often combine a layer of foam.

Which abrasive paper to use for the eccentric sander?

The best eccentric sander in comparison is worth nothing without the appropriate sanding paper. It is largely responsible for the result.


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