Ashburn
Catalog   /   Tools & Gardening   /   Construction Power Tools   /   Rotary Hammers

Comparison Belarusmash BPE-2100 vs Grand PE-1500

Add to comparison
Belarusmash BPE-2100
Grand PE-1500
Belarusmash BPE-2100Grand PE-1500
Outdated ProductOutdated Product
TOP sellers
Operating modes
hammer drilling
drilling only
chiselling (demolition hammer)
hammer drilling
drilling only
chiselling (demolition hammer)
Specs
Power consumption2100 W1500 W
Number of thrusts4800 bpm5500 bpm
Rotation speed750 rpm1150 rpm
Reversenobrush
Motor locationverticalhorizontal
Chuck
Chuck type
SDS+
SDS+
Wood drilling max. 30 mm30 mm
Metal drilling max. 13 mm13 mm
Concrete drilling max. 26 mm28 mm
Max. hole saw 65 mm68 mm
Features
Functions
 
power button lock
General
Power sourcemains (230 V)mains (230 V)
In box
additional handle
depth gauge
 
 
case (bag)
additional handle
depth gauge
chisel x2
drill 3 pcs
case (bag)
Weight4.9 kg3.15 kg
Added to E-Catalogmarch 2019june 2018

Power consumption

Rated power consumed by the rotary hammer during operation. Usually, the maximum power consumption in normal operation is taken as the nominal power.

In general, the higher this indicator, the heavier and more performant the rotary hammer is, the more advanced its performance usually turns out to be. On the other hand, the electricity consumption of such tools is high. In addition, note that with the same power consumption, the actual set of individual characteristics for different tools may be different. For example, frequency and impact energy are inversely related, and for the same power input, higher frequency usually means less individual impact energy. So, according to this parameter, it is worth evaluating only the overall level of the instrument; for accurate selection for specific tasks, you need to pay attention to more specific characteristics.

Also note that power consumption data can be useful for some tasks related to catering — for example, if a construction site is powered by an autonomous generator and you need to estimate the load on this energy source.

Number of thrusts

The number of beats per minute provided by the punch. For models in which the beat frequency can be adjusted, this item indicates the entire adjustment range, for example "1600 — 3000".

High impact frequency, on the one hand, increases the productivity of the tool and can significantly reduce the time required for work. On the other hand, with the same engine power, an increase in the number of strokes per minute leads to a decrease in the energy of each stroke. Therefore, among heavy performant devices, a low frequency is often found — up to 2500 beats / min and even lower. And the ability to adjust the frequency of impacts allows you to adjust the hammer to the specific situation, depending on what is more important — productivity or the ability to cope with hard, stubborn material. For example, for old crumbling brickwork, you can set the speed higher, and for working with stone or dense concrete, it is better to reduce the frequency of impacts by directing engine power to increase the energy of each impact.

Summing up, we can say this: when choosing a perforator, you should focus on both the number of strokes and the impact energy. Detailed recommendations on this subject for specific situations can be found in special sources.

Rotation speed

The speed of rotation of the working equipment provided by the rotary hammer. Usually, this indicates the speed at idle, without load; rated load speeds can be further specified in the characteristics (see below), but this is rare, and this parameter is still considered the main characteristic. It is also worth mentioning that in the presence of a speed controller (see "Functions"), the maximum speed value is given here.

When working in the main mode — drilling with impact — the rotation of the equipment is used mainly to remove waste from the hole, and the revolutions here are of no fundamental importance (they can be very low). Therefore, it is worth paying attention to this indicator mainly in cases where the rotary hammer is planned to be often used for conventional drilling, without impact. And here it is worth proceeding from the fact that high speeds increase productivity and contribute to accuracy when working with some materials, but reduce torque (compared to tools with the same engine power). So for heavy work with hard, stubborn materials, relatively "slow" tools are usually better suited.

Note also that drilling is not the main task of rotary hammers; therefore, their rotation speeds are noticeably lower than those of the same drills. On the other hand, in this case, low speeds are often compensated by powerful engines and high torque, which makes it possible to effectively drill holes...of a fairly large diameter, including using crowns.

Reverse

The reverse allows you to switch the direction of rotation of the nozzle. It also indicates the type of switch responsible for the reverse. The options might be:

Crawler. A switch in the form of a slider with two working positions (plus a neutral one between them, at which the tool does not turn on at all). Usually, it is able to move in the direction "back and forth" — this option is considered the most practical. The sliders are quite simple and at the same time convenient and visual.

Flag. A switch in the form of a flag, usually installed above the start button and thrown to the right and left. One of the advantages of the checkbox is that it is right at your fingertips and can be switched almost “without unnecessary movements” (which is not always available for the slider).

Brush (on the engine). The brush reverse differs from the two options described above not so much in the design of the switch as in the principle of operation: it changes the direction of rotation not by controlling the current on the motor windings, but by a special movable brush holder for this motor. This allows you to develop maximum power in any direction of rotation (which is not always available with electronic adjustment), and also reduces wear on individual engine components. The disadvantages of this option are complexity an...d high cost.

Gearbox. A rather specific option: switching the direction due to the settings of the gearbox (the mechanism that transmits rotation from the engine to the cartridge). Here you can draw an analogy with turning on the reverse gear in a car: turning on the reverse affects only the cartridge with the tooling, the tool motor continues to rotate in the same direction. This allows you to use the full power of the motor in any direction of rotation; and the absence of unnecessary switches has a positive effect on the reliability of the electrical components of the tool. On the other hand, gears with a reverse function are quite complex and expensive, and therefore they are rarely found in individual professional-grade rotary hammers.

Motor location

The location of the hammer motor is indicated relative to its standard operating position — when the drill is directed horizontally.

— Horizontal. Also, this arrangement can be called longitudinal, because. the engine is placed along the body of the perforator. Due to this, such a tool is more compact than vertical motor devices. On the other hand, horizontal motors are subjected to more severe loads, which makes it difficult to use this arrangement in high power rock drills. As a result, tools of this type have relatively low power and productivity, most of them are designed for relatively simple work.

— Vertical. The vertical arrangement assumes placement of the engine perpendicular to a working nozzle. This significantly affects the dimensions of the unit. On the other hand, vertical rock drills use gearboxes that reduce the load on the engine, which makes it possible to create powerful performant tools. Therefore, most professional-level models designed for intensive use in difficult conditions use a vertical engine layout. But also the predominant part of them without reverse.

Concrete drilling max. ⌀

The maximum tool diameter that can be used with a rotary hammer when drilling in concrete. See "Maximum drilling diameter in wood" for details.

Max. hole saw ⌀

The maximum tool diameter that can be used with a rotary hammer when drilling with a hollow core. Crowns are used to create holes of large diameter (from 40 mm) in hard materials such as reinforced concrete and stone. See "Maximum drilling diameter in wood" for details on the maximum diameter.

Functions

Soft start. A function that provides a smooth spin-up of the tool motor, with relatively little acceleration. This is achieved by limiting the starting current. Without such a limit, the current drawn by the motor at the time of starting can be quite high, causing the motor to start very abruptly, which increases the risk of letting go of the tool. In addition, current surges can lead to overloads in the network used for power. Soft start allows you to eliminate these phenomena to some extent. Note that it only applies to mains powered models.

Speed controller. Electronic limiter for the maximum speed of the tool attachment. This is implemented using a rotary switch on the tool body, turning it clockwise increases the maximum allowable speed, against — reduces it, which allows you to take into account the characteristics of the materials that need to be drilled or gouged.

Maintain momentum. The presence of an electronic adjustment system that automatically adjusts the rotation speed depending on the diameter of the working tool and the type of material. At the same time, the regulator maintains a constant speed regardless of the load — by changing the power supplied to the tool. Automatic adjustment increases the quality of processing and productivity, and also increases the life of both the working tool and the hammer itself, ensuring optimal operati...on.

Soft blow(economy mode). A special mode of operation in which the impact energy and rotational speed provided by the rotary hammer are reduced. This affects two things: firstly, the tool acts less intensively on the material being processed, and secondly, wear and energy consumption are reduced. The first feature will be relevant when processing fragile materials that can be damaged by too powerful chiselling; the second — when working with soft materials, which lend themselves well to even not very strong impact.

Anti-vibration system. The system for suppressing vibrations transmitted from the operating unit to the operator. Strong vibrations impair the accuracy of work, and also lead to rapid fatigue; vibration protection reduces these effects. It is used mainly in expensive professional models designed for long-term operation.

Safety clutch. Mechanical safety system that protects the hammer from breakage, and the operator from injury in case of jamming of the working tool in the material. When this happens in the drilling mode, the engine experiences critical loads that can very quickly disable it, and when chiseling, the hammer itself also starts to move, transmitting vibration to the operator’s hands. The safety clutch is set to a certain load level; when it is exceeded, it is destroyed, breaking the connection between the working tool and the perforator mechanisms.

Power button lock. The ability to block the power button in the off and/or on state. In the first case, the lock provides protection against accidental pressing, and can also play the role of child protection — the lock button is usually quite tight, and a curious little child will not be able to press it. The second option is useful if you need to work for a long time without a break, and it is inconvenient to keep the power button pressed all the time.

Brushless motor. The presence of a brushless (brushless) motor in an electric tool. Such motors are noticeably superior to traditional collector motors in terms of efficiency, which can significantly reduce energy consumption without sacrificing power; this is especially important for cordless tools (see "Power Source"), where this feature is predominantly found. In addition, brushless motors are quieter and produce virtually no sparks during operation, making them perfect for working in high fire hazard environments. Their main disadvantages are traditional — the complexity of the design and high price.

Backlight. The perforator has its own lamp that illuminates the work area. This feature is useful if there is little natural light, and there is no way to install artificial light — for example, when working in cramped conditions.

— Reverse. The reverse function allows you to rotate the working tool of the rotary hammer in the opposite direction. This can be useful, for example, to release a drill stuck in the material.

— Synchronization with a smartphone. The ability to connect the instrument to a smartphone or other gadget (such as a tablet) via Wi-Fi or Bluetooth. Such a connection is usually used to adjust operating parameters such as speed or torque; doing this through a mobile application is often more convenient than through the controls on the instrument itself. And some models with this function also allow you to set password access: the tool simply will not respond to the start button until the correct password is entered on the control gadget.

— Built-in bubble level. Built-in device to control the angle at which the tool is located to the horizon. As in ordinary levels, the role of the scale in such devices is played by a sealed flask with marks applied to it, containing a brightly coloured liquid and an air bubble. By the position of this bubble relative to the marks, the position of the entire tool is determined — namely, its correspondence to the vertical, horizontal, or pre-set tilt angle (the latter option, however, is almost never found in the built-in levels). At the same time, purely hand tools usually provide a single-axis level that reacts only to deviation from the horizontal forward or backward, and models with the ability to mount on a rack (see below) can also have a circular level that controls compliance with the vertical and determines deviations from it in any direction.

Carbon brush replacement indicator. The presence of a special indicator in the design of the perforator, signaling the need to replace the carbon brushes. Carbon brushes are located in the electric motor and are the most worn part of it, because. subject to constant friction during operation. When the brushes are worn beyond a critical level, the engine power drops, it starts to work intermittently, which can lead to unpleasant consequences up to tool breakage or even injury. And replacing the worn brushes themselves is much cheaper than changing the entire electric motor or even the entire tool.

In box

- Additional handle. The puncher has an additional front handle, usually located at the base of the cartridge. This handle can be non-removable or removable, rigidly fixed or movable. Holding with two hands for two handles is much more convenient than for one and the body, because. allows you to optimally distribute the load on the hands; this is especially important for long-term work and the processing of "heavy" materials.

- Depth stop. A device that allows you to make recesses of a strictly defined depth at once, without constant measurements and without the risk of drilling deeper than necessary. It usually looks like a rod attached to the body of the puncher parallel to the working tool. In use, this rod extends to such a length that when the desired depth is reached, it rests on the surface of the material being processed, preventing the drill from moving further.

- Chisel. Complete nozzle for impact work with a perforator in the manner of chasing, leveling hard surfaces, beating tiles, bricks, concrete, etc. For different tasks, various types of chisels are produced - flat, spade, groove, crushing peaks with a sharp tip.

Bur. The presence of a drill in the delivery set of a tool designed for processing various hard materials due to drilling with impact. The purchase of such a set eliminates the need...to look for a drill separately, however, the characteristics of the complete nozzle must be clarified before purchase, because. they may not meet the requirements of the buyer.

- Charger. The presence of a charging unit in the configuration allows you to charge the batteries. Accordingly, for models with batteries, this accessory is necessary to power the battery. However, there are models without a charger. And punchers with it may differ in the model of the charger, the name of which will allow you to learn more about its characteristics and, if necessary or as needed (breakdown), buy a similar one.

- Case included. The presence of a special case in the delivery set, which facilitates storage and transportation: it provides protection against shocks and adverse conditions (moisture, frost), is equipped with a special carrying handle, in addition, along with the punch itself, a set of working tools can be placed in the case, replaceable cartridges, etc.

- Dust collector. The presence of a special dust collector in the delivery set of the perforator. As the name implies, it is designed to collect the dust generated during operation, which can otherwise create a significant inconvenience. Usually looks like a bag or container attached to the body; can be either replaceable (thrown away with the collected garbage) or permanent. The dust collector slightly increases the weight and dimensions of the puncher, however, if necessary, it can be removed.
Grand PE-1500 often compared