Festool KS 120 REB KAPEX: the radial arm for professionals


If you’re looking for a , then we recommend you take a look at the Festool KS 120 REB KAPEX.

This is one of the most brilliant jewels produced by this company: a top of the range cut-off machine of exceptional quality, perfect for cutting soft and hard wood. It’s capable of putting in performances that are hard to see in this sector, with a series of optional extras that guarantee you maximum comfort and precision. Of course, the cost might seem prohibitive but, despite being very expensive, the Festool KS 120 REB KAPEX can be equated to the Mona Lisa of radial cut-off saws.

As it is a true work of art, also in terms of design and aesthetic impact, this model deserves an in-depth review!

  • Extra class in every detail.
  • Now with extendable table extension for long workpieces and angle support
  • Double-column guide with ball bearings for unique precision
  • Dual-line laser for exact marking of the cut
  • Package contents: HW W60 universal saw blade, angle bracket, workpiece clamp, operating tool, in cardboard box


Technical specifications

  • Power of 1,600 W
  • Saw blade diameter of 260 mm
  • Hole diameter of 30 mm
  • Weight of the cut-off machine: 23.10 kg
  • Model: radial cut-off machine
  • Cutting for wood


Construction and materials

Let’s start immediately with one of the great strengths of the Festool KS 120 REB KAPEX, namely its structure, which is really robust and made of magnesium die-cast metal. The only plastic sections, in fact, are the blade cover and the nozzle for connecting the hose of a chip vacuum cleaner, which already hints at another advantage of this model, namely its record-breaking stability on the worktop. And if you’ve ever tried a mitre saw, you know that stability always rhymes with precision.

The double-column guide is a must for this manufacturer, and it’s not by chance that we find it also in the “cheaper” version, that is the . You should also know that this model allows you to expand the worktop, thanks to the two lateral extensions. As for the other structural features, this direct drive mitre saw also includes the false square (a real rarity) and a handle with ergonomic coating that simplifies the transport phase.

There are other elements not to be underestimated, as in the case of the presence of the double LED line to highlight the area to be cut on the lath. And again: there’s the FastFix blade quick release system, along with the guide that slides on ball bearings.


Blade and cutting capacity

First of all, it should be noted that this Festool mitre saw, like the others in the KS range, is not compatible with cutting materials other than wood.

In other words, you won’t be able to use it to cut metal pipes, iron rods and bars, or even pieces of wood with nails and screws. The motor and the blade are not suitable for this kind of work, but this is not a limitation, but rather a precise choice. The Festool KS 120 is, in fact, a cut-off machine aimed exclusively at professionals who work with wood, from carpenters to joiners.

  • Extra class in every detail.
  • Now with extendable table extension for long workpieces and angle support
  • Double-column guide with ball bearings for unique precision
  • Dual-line laser for exact marking of the cut
  • Package contents: HW W60 universal saw blade, angle bracket, workpiece clamp, operating tool, in cardboard box

What about the blade? The machine is fitted with a rather large steel blade with a diameter of 260 mm and a 30 mm hole. For the sake of clarity, the values for the depth of cut should be given in a separate table.

  • Cutting at 90 degrees (90-degree tilt): 305 x 88 mm
  • 45-degree cutting (90-degree tilt): 215 x 88 mm
  • Special cut (90/90 degrees): 60 x 120 mm
  • Special cut ( 45/90 left): 40 x 120 mm
  • Special cut ( 45/90 right): 20 x 120 mm
  • 50 degree cut (90 degree left): 196 x 88 mm
  • 60-degree cut (90 degrees right): 152 x 88 mm
  • 45-degree cut (45 degrees left): 215 x 55 mm
  • Cut at 45 degrees ( 45 degrees right): 215 x 35 mm

Before we go any further, there are a few more details to clear up. As you can see from the table, the Festool KS 120 REB KAPEX can cut wooden boards and beams with a truly enormous thickness of 8.8 centimetres at a 90-degree angle. This is almost a record value, considering that it is still a fairly compact tool.


Inclination of the blade and bevel

As this is a professional radial cut-off machine, you would expect a model capable of angling the blade to both the right and left, and expectations are certainly not disappointed. The Festool KS 120 REB KAPEX, not surprisingly, allows you a millimeter adjustment on both sides, with the possibility of reaching a maximum inclination of 47/-47 degrees. As far as bevel cuts are concerned, the plate can also be adjusted from both sides, from a minimum bevel angle of 0 up to a maximum of 50/60 degrees.


Motor and performance

The Festool KS 120 REB KAPEX does not have a motor, but a real “tiger under the hood”. The 1,600 watts of power would already be enough to explain everything, adding the fact that it is a direct drive motor, and not a belt drive. This technology doesn’t cause any energy loss on the way from the motor to the blade, as would happen with a transmission machine. To make a long story short, the effective power of this motor has a higher output than machines with a higher wattage, and it also consumes less in utility bills.

The performance with wood is amazing, with an arm that allows total freedom of view on the piece to be cut, and with an easy adjustment of the bevel, through a lower lever to press. Secondly, it should be noted that the Festool KS 120 REB KAPEX mounts an electronic speed control system, which allows you to vary the speed at will: it starts from a minimum of 1,400 revolutions per minute and reaches a maximum of 3,400 rotations.

It doesn’t end here, because this machine is equipped with an integrated blade brake that is activated in case of danger, and a system that prevents any overloading of the motor. Finally, its robustness is such that it can also be used on construction sites.

  • Extra class in every detail.
  • Now with extendable table extension for long workpieces and angle support
  • Double-column guide with ball bearings for unique precision
  • Dual-line laser for exact marking of the cut
  • Package contents: HW W60 universal saw blade, angle attachment, workpiece clamp, operating tool, in a cardboard box


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