TECHNICAL CHARACTERISTICS OF POWER TOOLS AND MEASURING TOOLS

The products of Robert Bosch Power Tools GmbH are developed and produced according to high quality standards and in accordance with the generally accepted rules of technology. The technical data and functions of our products are regularly checked during development and in series production by application of statistical methods. Through this, we ensure that the products meet our quality standards and the expectations of the users as far as possible.

It is normal, however, that the actual performance of a tool varies from device to device. The specific application of a tool and environmental conditions have a significant influence. The respective technical information, e.g. on packaging and in manuals, refers to average values and applies to the products and their accessories when new. Below you can find an exemplary overview of the most important influencing factors on the actual performance of a power tool with respect to its application and the environmental conditions.

TYPICAL ICONS AND VALUES
may differ depending on the model

Power

The rated power of corded products is measured according IEC 62841-1.
The equivalent power of cordless (battery powered) products indicates the performance in comparisson to similar corded products.
The equivalent power depends on the capacity, type,state of charge, temperature and health/age of the battery.

Speed

The rotational speed of our power tools is indicated as a maximum value under no-load conditions that is not exceeded in order to avoid accidents with unsuitable accessories. It depends on several influencing factors such as, e.g. …

  • selected gear
  • status of the tool, such as its run-in status and its temperature, which influences the battery performance and the viscosity of internal lubrication
  • electrical input voltage & current, battery state of charge
  • load that is induced by the dimensions and mass of the accessory

Screw diameter

The screwing performance of our power tools depends on several influencing factors such as, e.g. …

  • the application, which depends on material properties of the work piece (e.g. hardness and density), dimensions of the screws etc.
  • type, quality & status of bits (fits to the application) and screws (full / partial thread, head type, coating, quality, etc.)
  • rotational speed (please use 1st gear for higher soft torque)
  • battery type and state of charge
  • work techniques, e.g. force that is applied by the operator
Torque

The torque (soft, hard, max.) of our power tools depends on several influencing factors such as, e.g. ...

  • gear setting
  • type & status of the accessory (e.g. stiffness, play between tool and bit)
  • wear of the tool
  • work techniques of the operator, such as force that is applied to hold / fix the tool and fixation of workpiece(s)
  • battery type and state of charge
  • battery and tool temperature
Dimension

The length of our drill drivers is meausred with an open chuck.

Performance

The sawing, drilling, routing, cutting and illumination performance of our power tools depends on several influencing factors such as, e.g. …
ype, quality & status of accessory (selection of appropriate blade, bit,…)

  • externally applied load profile, which depends on material properties of the work piece (e.g. hardness and density), dimensions of the accessory, cutting depth etc.
  • well fixed workpiece / machine – e.g. no vibration with jig saw work
  • lubrication in some applications
  • work techniques, e.g. force that is applied by the operator or the grain direction of wood in relation to the direction of cut
  • battery type and state of charge
Charging time

The charging time of our batteries depends on several influencing factors such as, e.g. …

  • battery state of charge before charging starts
  • ambient temperature and battery temperature
  • state of health of the battery

Li-ion batteries age over their lifetime which causes a decrease of the state of health (decline of the usable battery capacity)
The degree of aging depends on the battery’s usage history, for example the number of charging cycles, type of charging (fast, slow), discharging levels (always to “empty” may reduce the battery capacity over time) and the power level of the application.

Impact rate

The impact rate (e.g. beats per minute) of our power tools depends on several influencing factors such as, e.g. …

  • status of the tool, such as its run-in status and its temperature, which influences the battery performance and the viscosity of internal lubrication
  • electrical input voltage & current, battery state of charge
  • load that is induced by the dimensions and mass of the accessory
Impact energy

The impact energy of our power tools is measured according to procedure EPTA 05:2016 and depends on several influencing factors such as, e.g. …

  • drill bit size (big hammers are more effective with big drills, small with small)
  • force that is applied by the operator (hammers: no additional operator pressure is beneficial for the working progress; impact drills: additional pressure is supporting faster working progress)
  • status of tool and battery (e.g. temperature)
  • ambient pressure and temperature
Battery runtime

The battery runtime of our cordless products depends on several influencing factors such as:

  • the externally applied load profile, which depends on
    • material properties of the work piece (for example height and density of grass, density of wood, …)
    • dimensions of the work piece (for example volume of tires, diameter and length of screws, …)
    • work techniques and working speed (for example the force applied by the operator, or the moving speed and overlapping lanes during lawn mowing or hedge cutting) (longest runtime can be typically achieved under no-load conditions.)
  • ambient temperature – optimal battery performance can be reached in the range of 15-25°C. At low temperatures, the available runtime and power of a battery is reduced.
  • state of health of the battery

Li-ion batteries age over their lifetime which causes a decrease of the state of health (decline of the usable battery capacity)
The degree of aging depends on the battery’s usage history, for example the number of charging cycles, type of charging (fast, slow), discharging levels (always to “empty” may reduce the battery capacity over time) and the power level of the application.

Moisture Resistance

IP protection is tested in accordance with a standardized procedure, e.g. IEC 62841.
The stated IP rating represents the degree of protection provided by enclosures.
However, if the enclosures of power tools are damaged or worn-out, the degree of protection may differ.

Suction performance

Flow rate, vacuum pressure and air speed depend on status of filter, sealings and hose. Especially contamination can reduce these values.

Charging current

The actual charging current depends on the battery type. It can vary with the battery and charger temperature as well as with the ambient temperature.

Air-temperature of heat guns

The temperature depends on the capacity, type,state of charge, temperature and health/age of the battery. It is measured at 20-25°C surrounding temperature.

Weight

The weight of our cordless tools is measured without battery if not stated explicitly.
It is measured according to IEC62841-1, 5.17 & 5.17 or EPTA Procedure 01:2014.
The tool weight varies in a small range, based on usual part tolerances

Capacity

The usable battery capacity depends on the load profile of the application.
Li-ion batteries age over their lifetime which causes a decrease of the usable battery capacity (decline of the battery State of Health).
The degree of aging depends on the battery’s usage history, for example the number of charging cycles, type of charging (fast, slow), discharging levels (always to “empty” may reduce the battery capacity over time) and the power level of the application.

Vibration and Noise

Vibration level and noise emission values are measured in accordance with a standardized measuring procedure, e.g. EN 62841‑2‑x.

The stated vibration level and noise emission values represent the main applications of the power tool. However, if the power tool is used for other applications, with different feed force, with different or worn-out accessories or is poorly maintained, the vibration level and noise emission value may differ. This may significantly increase the vibration and noise emissions over the total working period

Electronic Angle Detection

The absolute measuring accuracy can vary based on different conditions (e.g. misalignment of the tool with the screw based on the interac-
tion between screwdriver bit and/or adaptor; evenness of the surface which is referred to; etc)

Accuracy

The measuring accuracy of our measuring tools depends on various influencing factors, including:

  • temperature fluctuations, very high/low ambient temperatures
  • vibration, fog, smoke, or direct sunlight
  • material and size, reflection behavior of the measurement objects
  • measurement path
  • object depths
  • material and size of the objects
  • material and properties of the substrate

The specified values ​​assume normal to favorable ambient conditions.

In addition, for rangefinders, a distance-dependent deviation in mm/m is to be expected (for further details, please refer to the operating instructions).
In addition, for thermal imaging cameras and thermo detectors, accuracy may be affected at a certain surface temperature (for further details, please refer to the operating instructions.)

Measuring Distance

The measuring distance of our measuring tools depends on various influencing factors, including:

  • backlight and the reflectivity of the target

For example, a white painted wall and a weak background lighting have a positive influence, a dark wall and a bright background lighting have a negative influence.

  • size of objects, material and condition, as well as homogeneity and moisture of substrates

For example, a homogeneous, dry substrate has a positive influence on the measuring distance while a homogeneous, moist substrate has a negative influence.

Working Range & Depth

The measuring range of our measuring tools depends on several factors, including:

  • the work area can be negatively affected by unfavorable environmental conditions
    (e.g. direct sunlight).
Bluetooth

Bluetooth usage/range depends on a number of factors including:

  • depending on the model and operating system, it may not be possible to establish a connection with Bluetooth® Low Energy devices
  • bluetooth® devices must support the SPP profile
  • the range can vary greatly depending on external conditions, including the receiving device used

The Bluetooth® range can be significantly lower in closed rooms and through metal barriers (e.g. walls, shelves, suitcases, etc.), and the use of Bluetooth can also result in shorter operating times.