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Comparison Bosch PBH 2900 RE 0603393106 vs Bosch PBH 2800 RE 0603393020

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Bosch PBH 2900 RE 0603393106
Bosch PBH 2800 RE 0603393020
Bosch PBH 2900 RE 0603393106Bosch PBH 2800 RE 0603393020
from $128.32 up to $143.96
Outdated Product
from $139.96 up to $186.64
Outdated Product
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Operating modes
hammer drilling
drilling only
chiselling (demolition hammer)
hammer drilling
drilling only
chiselling (demolition hammer)
Specs
Power consumption730 W720 W
Impact energy2.7 J2.6 J
Number of thrusts4000 bpm4000 bpm
Rotation speed1450 rpm1450 rpm
Rated load speed1100 rpm1100 rpm
Reversesliderslider
Motor locationhorizontalhorizontal
Chuck
Chuck type
SDS+
SDS+
Wood drilling max. 30 mm30 mm
Metal drilling max. 13 mm13 mm
Concrete drilling max. 26 mm26 mm
Max. hole saw 68 mm68 mm
Features
Functions
speed controller
safety clutch
power button lock
speed controller
safety clutch
power button lock
General
Power sourcemains (230 V)mains (230 V)
In box
additional handle
depth gauge
case (bag)
additional handle
depth gauge
case (bag)
Weight3 kg3 kg
Added to E-Catalogmay 2015june 2012

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.

Impact energy

The energy transmitted by the perforator to the material being processed upon impact; the higher this indicator, the stronger and more powerful each individual blow.

First of all, we recall that the energy of impacts is directly related to their frequency: an increase in frequency leads to a decrease in energy. Therefore, for models where the number of strokes can be adjusted, this paragraph usually gives the maximum energy achieved at the minimum speed of operation.

In general, higher impact energy improves efficiency when working with hard, stubborn materials, but requires more motor power (especially if it has to be combined with a high frequency). Therefore, it is worth choosing according to this parameter, taking into account specific tasks. So, for occasional use in everyday life, an energy of 2 J or less is enough, for home repair work of medium intensity, at least 3 J is desirable; a power of 4 J or more is already considered high; and in some industrial-grade perforators, this figure can reach 30 J.
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