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Review of the Worx WX803 cordless angle grinder

23.11.2023 09:08

Characteristics

The main characteristics of the tool are presented in the following table. This and other information can be found on the product page .

ManufacturerWorx
Model (item)WX803
Device typemanual cordless angle grinder
engine's typebrushed
Disc diameter125 mm
Spindle threadM14
Max. cutting depth (disc overhang)55 mm
Rotational speedfixed, 8600 rpm at idle
Built-in backlightNo
Engine blocking when disk jamsYes
Smooth startNo
Dimensions, weight
  • 260×280×105 mm, 1.5 kg with casing and handle
  • 320×280×105 mm, 1.85 kg with cover, handle and 2 Ah battery
Battery typelithium-ion Worx PowerShare
Voltage20 V
Battery life under loadabout 13 minutes of metal sanding with the flap attachment (with 2 Ah battery)

Equipment

The instrument provided for testing is transported in a cardboard box with branded colors.

The instrument provided for testing is transported in a cardboard box with branded colors.

The angle grinder comes complete with a protective casing, handle, key and printed materials. Also in the box was an abrasive disc for metal 6 mm thick. There's no battery or charger — the WX803.9 package is clearly aimed at those who already own a Worx cordless tool.

The angle grinder comes complete with a protective casing, handle, key and printed materials. Also in the box was an abrasive disc for metal 6 mm thick. There's no battery or charger — the WX803.9 package is clearly aimed at those who already own a Worx cordless tool.

Design, control

The angle grinder in question runs on a brush motor.

The angle grinder in question runs on a brush motor.

The design is standard for all angle grinders; it is impossible to come up with a more optimal and convenient option. Let us note the rather modest dimensions, even some miniatureness of the body.

The design is standard for all angle grinders; it is impossible to come up with a more optimal and convenient option. Let us note the rather modest dimensions, even some miniatureness of the body.

The machine is controlled by a standard slide switch with a lock, which in our tool is located not at the top, but at the side.

The machine is controlled by a standard slide switch with a lock, which in our tool is located not at the top, but at the side.

No key is needed to change the position of the guard. The casing is easily put on the seat, rotated to the desired angle and secured with a clamping lever.

No key is needed to change the position of the guard. The casing is easily put on the seat, rotated to the desired angle and secured with a clamping lever.

The characteristics of the device do not state either a soft start or an electric engine brake. However, during operation, we noticed a rather leisurely unwinding of the attachments, but especially a quick stop. There simply cannot be a brake missing here. Judge for yourself: the next video compares the stopping time of our angle grinder and the most ordinary network angle grinder “without bells and whistles”.

The engine of our angle grinder stops twice as fast as in a conventional angle grinder. Well, how did you manage without a brake system?

The internal diameter of the protective casing is 138 mm with a side height of 24 mm. This makes it possible to use most non-standard attachments with the housing, the actual diameter of which exceeds 125 mm.

Since the grinder is not supplied with batteries, we were free to choose. A 20-volt Worx battery of any capacity will do, but for a tool that has high power consumption, it would be wiser to use a thicker battery, 4 Ah.

Instructions

The angle grinder comes with detailed instructions listing safety precautions during operation and methods for performing certain tasks.

Exploitation

Attaching attachments

To attach attachments to the angle grinder, a standard spindle with M14 thread is used. To secure the attachment, a nut is included, which is screwed onto the spindle thread and tightened with a wrench.

To test angle grinders, attachments for different purposes were prepared, for wood, metal and concrete.

Thanks to the large-sized protective casing, almost all the attachments fit onto the spindle without difficulty.

The exceptions included two large nozzles with elements extending beyond the diameter of the casing. The felt petals of the first nozzle are pressed too tightly against the inside of the casing: the nozzle cannot be used in this form, it will burn (the smell of burnt wool and other “delights”). The second attachment, with metal wires, did not want to fit on the spindle at all. And since it is prohibited to use such an attachment without protection, it is better to forget about it.

Sawing

The task is to determine whether the angle grinder tends to reduce power or go into protective mode when there is high resistance when sawing different metals. To do this, we put a metal profile and a pipe made of a non-magnetic alloy, which is extremely hard, under the knife.

But there were no surprises here either; the tool coped with the proposed task equally easily. Not every networked angle grinder works so quickly.

Grinding

The motor power requirements for grinding increase because the contact area between the grinding attachment and the material is greater than that of the cutting wheel. But here, too, there was no tendency for engine speed to decrease, even when strong pressure was applied to the tool. This again confirms the high power, not inferior to network analogues.

Autonomy

Here is our final test, which for some time now has acquired a second meaning: long (relatively) grinding of a metal surface in order to remove old paint and rust. At the same time, we will find out the time that the grinder will work on one fully charged battery. To prevent the work from ending too quickly, we connected the most capacious battery we have to the tool: 4 Ah.

The next video is accelerated many times and is equipped with a time counter. You can see that the battery lasted for 13 minutes of sanding metal with the flap attachment.

So far this is the best result of all the grinders that have passed through our hands. Previous angle grinders with the same battery worked for 10, 11 and 12 minutes. Surprisingly, nothing predicted such a gap. Let it be small, symbolic, but still.

Care

To make the tool look and feel good, after use it is enough to wipe it to remove dust. Especially concrete. Batteries should be stored separately, in a warm room, and recharged regularly.

Battery

The angle grinder in question is equipped with 20-volt Worx batteries from the PowerShare series. The advantage is that most of the tools of this brand run on the same batteries, from jigsaws and saws to screwdrivers and grinders.

Conclusions

Worx WX803 is an effective tool for quickly and conveniently processing any materials and surfaces without mains power. The grinder is good for its relative compactness and low weight. Protection against restart when changing the battery, keyless installation of a protective casing, engine brake — there are signs of a low-budget model.

Pros:

  • battery operation
  • high power
  • keyless mechanism for fixing the position of the casing
  • electric engine brake
  • protection against accidental restart

Minuses:

  • no speed control