Cordless Sanders: Characteristics Of Battery Powered Sanders. Rating And Comparison Of Models. Features Of Straight Machines For Wood

2024 Author: Beatrice Philips | [email protected]. Last modified: 2024-01-18 12:09

Cordless grinders are a type of portable equipment that allows you to significantly expand the range of use of grinders. As a rule, such models are compact, have a modern design and are suitable for cutting metal, wood, stone to a shallow depth.

But among miniature devices there are real "workhorses" that meet the requirements of the professional market and allow continuous continuous operation for quite a long time.

Main characteristics

The basic characteristics of battery-powered grinders are quite standard, they allow even with a small analysis of the market for such equipment to get an idea of the requirements for the purchased tool. Among the important parameters, it is worth highlighting a number of characteristics.

• Supported disc diameter. As a rule, it varies in the range of 115-125 mm.
• Battery life. The most effective are lithium-ion versions for 18 V with a resource reserve of 5000-5500 A * h.
• The number of spindle revolutions per minute. The lower it is, the more intensively consumables are spent, the stock of circles will have to be regularly replenished. The optimal figure is not less than 8,000 rpm - for battery technology, the figure is quite impressive.
• Motor construction type. Brushless angle grinders are more expensive, but in the long term they are more profitable. Collector (with brushes) are simpler in design, they often fail.

In addition to other parameters, when selecting battery technology, it is worth clarifying the possibilities for its operation in a different range of atmospheric temperatures and climatic conditions.

Varieties

All cordless grinders can be roughly divided into household and professional options. The first ones have ultra-compact dimensions and a quite expected set of characteristics: 3 Ah batteries, supported disk sizes up to 115 mm and light weight - on average about 1.5 kg. The budgetary cost makes such mini-angle grinders optimal for home use. But in terms of the duration of work without recharging, they are significantly inferior to their counterparts. On average, the tool lasts for 10 minutes of continuous grinding or cutting. The immersion depth in the material does not exceed 25-28 mm.

Professional models also outperform their full-size wired counterparts in terms of supported drives - it reaches 125 mm versus 180/230 mm for large grinders. But otherwise, mobile devices have many advantages that allow you to fully control the entire process, to work without interruption for 30-45 minutes, depending on the type of operation being performed. Among professional models, highly specialized options are common. They are focused exclusively on metal cutting and are equipped with special impulse batteries.

Advantages and disadvantages

Battery-powered angle grinder has a number of advantages and disadvantages. Its advantages include:

• high mobility - can be used where there is no access to the network at all;
• minimum weight - the lightest models have a mass of 1.5 kg, without creating a significant load on the hand during work;
• low noise level - in comparison with network models, the difference is very noticeable;
• the comfort associated with the lack of wires and restrictions on movement on the site;
• the most simple design, which even a non-professional can cope with the start-up and debugging.

Among the most frequently mentioned disadvantages of portable grinders, one can single out the high cost, which significantly exceeds the similar indicators of network models. In addition, the range of products in this case is significantly limited and is not represented by all popular brands.

Popularity rating

It is not difficult to make a rating of cordless angle grinders on the market. Making a comparison, it can be noted that there is a significant difference between professional and household appliances. There are several popular models among the market leaders.

Metabo WB LTX BL 125 Quick equipped with a brushless motor, modern electronics to ensure safe operation, charging indicators. The innovative LiHD battery holds a charge for a long time, being considered one of the best on the market, and has a swivel design. At the same time, 9000 rpm at idle speed is sufficient to demonstrate high performance.

• Milwaukee M18 CAG125XPDB-0 features a brushless motor, professional grade and modern filling. Batteries are usually offered to be purchased separately - the manufacturer claims a capacity of 5 A * h. Among the advantages, one can note the presence of a filter, a quick-clamping nut for changing equipment, and the presence of an additional handle in the configuration.
• DeWALT DCG 412 M2 equipped with a protective bracket, a 4 A * h battery, during operation it develops up to 7000 rpm at idle speed. The model has an additional two-position handle, there is a start button lock.

As for straight machines for wood, here, when performing work, it is not the number of revolutions of the spindle that is of primary importance, but the ability of the equipment to cope with the tasks assigned to it. Straight angle grinder is intended for finishing the surface to the desired smoothness. Among its differences is the special shape of the body, reminiscent of the classic brace. The equipment is fastened in front, in a special socket, the range of possibilities depends on the status of the model - domestic or professional.

Rechargeable straight angle grinders for woodworking have a power of up to 800 W, while coping with the basic set of operations . For long-term sanding on a large area, it is better to choose a more powerful professional technique of 2000 W, which supports working with discs with a diameter of up to 150 mm. For precise processing of the material, small equipment will also be needed, the wider the choice of possibilities, the easier it will be to achieve the desired goal. Among the leading brands here are Metabo, Makita, Bosch.

With the right approach to choosing, cordless grinders can be a very useful purchase for both professionals and DIYers.