Technical Characteristics of Power 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 power 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.

Warning
TYPICAL ICONS AND VALUES
may differ depending on the model

Battery runtime

Battery runtime
Typical icons and values (may differ depending on the model)

The battery runtime of our cordless tools depends on several influencing factors such as, e.g.

  • 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, …)
    • owork 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.
  • status of battery: the capacity of a battery strongly depends on its lifetime history, for example the age, number of charging cycles, type of charging (fast/slow), charging levels (always to “empty”, or even into deep discharge condition may reduce the battery capacity over time).

 

Charging Time

Charging time
Typical icons and values (may differ depending on the model)

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

  • battery state of charge before charging starts
  • ambient temperature
  • status of the battery: capacity (declines over the battery lifetime), as well as its charging history, for example the number of charging cycles, type of charging (fast, slow), charging levels (always to “empty”, or even into deep discharge condition may reduce the battery capacity over time).

 

Drilling performance

Drilling performance
Typical icons and values (may differ depending on the model)

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

  • the type, quality & status of the drill bit fits to the application

  • diameter of drill bit, depending on the material type

  • externally applied load profile, which also depends on material properties of the work piece (e.g. hardness and density), drilling diameter, depth of drilling etc.

  • rotational speed: please use 2nd gear and full throttle for full speed; we recommend to not continually work in half throttle mode for increased tool lifetime

  • work techniques, e.g. force that is applied by the operator

  • battery type and state of charge

 

Screwing performance

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

  • externally applied load profile, 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)

    • 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

 

Sawing, Routing, Cutting performance

Sawing, Routing, Cutting performance
Typical icons and values (may differ depending on the model)

The sawing, routing and cutting performance of our power tools depends on several influencing factors such as, e.g. …

  • type, 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
    • the grain direction of wood in relation to the direction of cut
  • battery type and state of charge

Sanding, Grinding, Planning performance

The sanding, grinding and planning performance of our power tools depends on several influencing factors such as, e.g. …

  • The type, quality & status of an accessory (type of sanding paper, grain size, blade type, bit type,…)
  • ·externally applied load profile, which depends on material properties of the work piece (e.g. dimensions, hardness, density, humidity, grain direction of wood, …), the size of the working surface, etc.
  • work techniques, e.g.
    • force that is applied by the operator
    • fixation of workpiece and machine – to avoid vibrations
  • battery type and state of charge

Impact, Stroke and Orbit rate, Chain Speed

Impact, Stroke and Orbit rate, Chain Speed
Typical icons and values (may differ depending on the model)

The impact, stroke and orbit rate, as well as the chain speed of our power tools, depends on several influencing factors such as, e.g. …

  • externally applied load profile, which depends on material properties of the work piece (e.g. hardness and density), the size of the working surface, etc.
  • battery type and state of charge
  • status of the tool, such as its run-in status and its temperature, which influences the battery performance and the viscosity of internal lubrication

 

Speed (rpm) – no load 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. …

  • 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

Torque (soft, hard, max.)

Torque (soft, hard, max.)
Typical icons and values (may differ depending on the model)

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

  • type & status of the accessory
  • work techniques of the operator, such as
    • force that is applied to hold / fix the tool
    • fixation of workpiece(s)
  • battery type and state of charge
  • battery and tool temperature

Impact energy

Impact energy
Typical icons and values (may differ depending on the model)

The impact energy of our power tools 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

 

Noise and Vibration

Noise and Vibration
Typical icons and values (may differ depending on the model)

Vibration level and noise emission values are measured in accordance with a standardized measuring procedure, e.g. EN 62841‑2‑11.

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 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.

Pressure / flow rate

Pressure / flow rate
Typical icons and values (may differ depending on the model)

On high pressure washers, the maximum pressure is the initial pressure inside the pump after the machine is turned on and before the trigger on the lance is released. This is a mandatory value to be communicated for safety reasons: only accessories shall be used which are qualified for this maximum pressure.

It is not equivalent with the constant operating pressure that can be measured at the outlet of a hose or lance during application.

The operating pressure and the flow rate of our high pressure washers, spray guns, air pumps and leaf blowers is depending on several factors such as, e.g.…

  • Maintenance status of tool (well cleaned filters, nothing clogged, …)
  • Fluid properties (e.g. temperature, viscosity, surface tension, density etc.)
  • Ambient pressure and temperature
  • Battery State of Charge
  • Type of accessories, e.g. the diameter and length of the hose / pipe
  • Individual settings made by the user to regulate the fluid and air flow

The work progress, e.g. in m²/min for paint spray guns, also depends on the working speed of the operator and individual preferences (e.g. coverage in one stroke vs coverage in 2-3 strokes).

Electrical input power

Electrical input power
Typical icons and values (may differ depending on the model)

The electrical input power of our power tools mainly depends on the electrical input voltage & current from the operator’s power supply network.

Shredding ratio

The shredding ratio of our garden tools depends on several influencing factors such as, e.g. …

  • externally applied load profile, which depend on material properties of the work piece (e.g. dimensions, hardness, density, humidity, grain direction of wood, …)
  • status of the blades – they are subject to wear and need to be maintained or replaced when the shredding performance drops.
  • work techniques of the operator

Luminous power

The luminous power of our lamps depends on several influencing factors such as, e.g. …

  • battery state of charge
  • maintenance status of the lamp (well cleaned screens)

Gluing capacity

Gluing capacity
Typical icons and values (may differ depending on the model)

The gluing capacity of our glue guns depends on several influencing factors such as, e.g. …

  • use of correct glue stick: material properties and dimensions of glue
  • status of nozzle (clean)
  • force applied by user
  • battery type and state of charge

Heat-up time / ready-to work in x seconds

The heat up time of our glue guns mainly depends the ambient temperature and the initial temperature of the glue gun.

Airflow temperature of heat guns

The airflow temperature of heat guns mainly depends on the working distance between nozzle and work piece. The warm-up cycle needs to be completed for optimal results.

Lawn size

Lawn size
Typical icons and values (may differ depending on the model)

The recommended lawn size is a value that is intended to help a customer in making a decision which lawn mower model is suitable for individual needs. The lawn size is typically smaller than the total garden size. For different lawn size categories (e.g. 200m², 500m², 700m² and others), we offer suitable lawn mower models. They differ for example in bowl diameter and cutting blade size.

Cutting width and height

Cutting width and height
Typical icons and values (may differ depending on the model)

The cutting width is depending on the cutting blade size. Operating a lawn mower with a larger cutting blade will lead to an increased cutting width and faster work progress during lawn mowing.

The height of cut can be adjusted on most lawn mower models to pre-defined levels. This is dependant on manufacturing tolerances of mechanical parts of the lawn mower, and environmental conditions such as the flatness, hydration and condition of the lawn (e.g. presence of thatch, disease).