All about grinders Sturm

An angle grinder, or, in a simple way, a grinder, is an indispensable tool for repairs and other construction work. After all, it is designed for cleaning, grinding and cutting various materials - such as metal, concrete, brick, tiles. In this article, we will talk about angle grinders of the Sturm brand (Storm).

Usually, the subdivision of grinders is made according to the size of the grinding wheel (or disc): small (115 mm and 125 mm in diameter), medium (150 and 180 mm) and large (230 mm). The range of Sturm grinders is represented by all types of devices.

The table shows some of the technical characteristics of the Sturm grinder models (but not all).

As you can see, many models have a soft descent system that protects the gearbox and drive from overload at the moment the device is turned on. Good ventilation, carried out in most models, prevents contamination of the components and helps to remove excess heat. The gearbox of the device is covered with a housing made of metal, which also increases the life of the device and serves as an additional cooling method.

If you follow all the requirements of the operating instructions for this device, this will extend its service life.

The most frequent breakdowns of grinders result from several reasons:

• worn out parts (brushes most often suffer);
• malfunctions of the armature and stator occur due to non-observance of the operating mode recommended by the operating instructions;
• overload in the power supply network, voltage surges lead to breakdowns of the stator and rotor;
• worn or damaged fasteners (nuts, washers, etc.) and bearings;
• careless and careless handling of the device leads to damage and destruction of the case;
• non-observance of the mode of preventive procedures (cleaning and lubrication) is fraught with malfunctions in the gearbox, as well as the "on" button of the device.

If there is no reaction to pressing the power button, feeling a burning smell or uneven operation of the grinder, check the device yourself.The wear of the brushes, their displacement, and the breakdown of the power button itself can lead to such malfunctions. Turn off the unit and try to turn the circle (disk) with your own hands.

If the disc does not spin or only moves when a lot of force is applied, then the cause of the malfunction lies in the gearbox. If the dial is easy to scroll, check the electrical circuits. If you do not find the above faults, test the brushes and the motor. If there is a breakdown in the button, then it must be changed.

If the angle grinder sparks during operation or it slowly builds up speed, there is a breakdown in the anchor. You can try to remove and rewind it on your own, and also entrust this matter to the master. But heed the advice of professionals - this is only a temporary measure. After rewinding, the anchor will work no longer than a month, so it is more profitable to buy a new device, especially since the prices for these devices are quite affordable.

Most users of Sturm angle grinders are unanimous in their positive opinion. They note the high quality of materials used in the design, ergonomics and comfort of handles, durability and reliability in operation. True, they also note a rather narrow specialization of some models. If you bought a household model, do not use it for heavy work - the device will quickly wear out and fail. Please read the technical specifications of the intended purchase carefully.

In the next video, you will find a detailed review of the Sturm AG90121P grinder.