Perforators "Diold": features and tips for use

The quality of construction work largely depends on the tools used and the correctness of their application. This article discusses the features of the "Diold" rock drills. You can read the tips for using them, as well as reviews from the owners of such a tool.

Electric tools manufactured by the Smolensk plant "Diffusion" are presented on the Russian market under the trademark "Diold". Since its foundation in 1980, the main products of the plant have been CNC systems for industrial machine tools. In the nineties of the last century, the changed market situation forced the plant to expand the range of manufactured products. Since 1992, he began to produce electric tools, including hammer drills. In 2003, the Diold sub-brand was created for this product category.

The main feature of the "Diold" brand tool is that all production facilities engaged in its production are located in Russia. Thanks to this, it is possible to achieve a combination of high quality products and reasonable prices.

All rotary hammers have three main modes of operation - rotary, percussion and combined (drilling with percussion). All instrument models have a reverse function. Currently available for purchase on the Russian market, the assortment of Diold rock drills includes a number of models. Consider the current options.

• PRE-1 - a budgetary option for household use with a power of 450 watts. It is characterized by a spindle rotation speed in the drilling mode up to 1500 rpm and a blow rate up to 3600 per minute with an impact energy of up to 1.5 J. up to 12 mm) holes in concrete and other hard materials.

• PRE-11 - a more powerful household option, consuming 800 watts from the network. Differs in drilling speed up to 1100 rpm, impact frequency up to 4500 bpm at energy up to 3.2 J. Such characteristics allow using the tool for making holes in concrete with a diameter of up to 24 mm.
• PRE-5 M - a variant of the previous model with a power of 900 W, which allows drilling holes with a diameter of up to 26 mm in concrete.
• PR-4/850 - at a power of 850 W, this model is characterized by a drilling speed of up to 700 rpm, a blow rate of 4000 bpm at an energy of 3 J.

• PR-7/1000 - a variant of the previous model with a power increased to 1000 W, which allows making relatively wide (up to 30 mm) holes in concrete.
• PRE-8 - despite the power of 1100 W, the rest of the characteristics of this model almost do not exceed PRE-5 M.
• PRE-9 and PR-10/1500 - powerful industrial rock drills with impact energy of 4 and 8 J, respectively.

The main advantage of the products of the Smolensk plant over competitors from China is their high reliability. At the same time, modern materials and innovative designs are used, which makes it possible to achieve a relatively low weight of the tool. The guarantee of the high quality of the products of the Smolensk company is its two-stage control - at the quality control department and before shipment to the customer. If we compare the tools of the company with the goods of European manufacturers, then with a slightly lower quality, the Diold perforators differ in a noticeably lower price. Another important advantage of the brand's tools is good ergonomics and well-thought-out operating modes, which make working with the hammer drill easy and convenient even for not very experienced craftsmen.

The main disadvantage of the Smolensk instruments is the need for strict adherence to the recommended operating modes. Deviation from them is fraught with overheating and equipment breakdown. Another disadvantage of the company's model range is the lower impact energy in perforating mode compared to products of other brands with similar power consumption.

• Do not try to drill a deep hole in hard material "one pass". First, you need to allow the tool to cool down, otherwise the electric drive may break down. Secondly, cleaning the hole from the generated waste by pulling the drill out of it when stopping makes further drilling easier.
• Do not work in shock mode alone for long periods of time. Periodically switch to non-impact rotation for at least a few minutes. This will cool the tool slightly, and the lubricant inside it will redistribute and become more even.
• In order not to collide with a breakage of the chuck, avoid distortions of the punch during operation. The drill must be positioned strictly along the axis of the planned hole.
• To avoid unpleasant breakages and even injuries, use only consumables (drills, chucks, grease) approved by the tool manufacturer.
• The key to a long and reliable operation of the "Diold" rock drills is their timely maintenance and careful care. Dismantle the tool regularly, clean it from dirt, lubricate it in the places indicated in the instructions. The critical place of all perforators is the electric motor, so it is imperative to inspect the condition of the brushes and the boot, if necessary, carry out preventive repair or even replace them.

Many craftsmen who have encountered Diold punchers in practice speak positively about them. Most often, they note the high quality and reliability of the tool, as well as the convenience of working with it. Almost all reviewers believe that the company's products have an optimal price-quality ratio. Many owners consider an important advantage of tools that they have three drilling modes.

The main disadvantage of all models of the Smolensk instrument, the craftsmen call the higher speed of their heating in comparison with the goods of other manufacturers. Sometimes there are complaints about the insufficient power of the shock mode, therefore, before purchasing an instrument, you should carefully study its characteristics and decide for what purposes it will be used.

In the next video, you will find a test of the Diold PRE 9 perforator.