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Read all the safety and general instructions. Failure to observe the safety and general instructions may result in electric shock, fire and/or serious injury.
Please observe the illustrations at the beginning of this operating manual.
Intended Use
The machine is intended for driving in and loosening screws and bolts as well as for tightening and loosening nuts within the respective range of dimension.
Product Features
The numbering of the product features refers to the diagram of the power tool on the graphics page.
a) This accessory is not part of the standard scope of delivery.
Technical Data
Cordless Impact Driver | GDR 12V-105 | |
Article number | 3 601 JA6 9.. | |
Rated voltage | V= | 12 |
No-load speed | min -1 | 0–2600 |
Impact rate | min -1 | 3100 |
Machine screw diameter | mm | M4–M12 |
Max. screw diameter | mm | 8 |
Tool holder | ¼" internal hexagon | |
WeightA) | kg | 1.0–1.2 |
Recommended ambient temperature during charging | °C | 0 to +35 |
Permitted ambient temperature during operationB) and during storage | °C | –20 to +50 |
Recommended rechargeable batteries | GBA 12V... | |
Recommended chargers | GAL 12... GAX 18... |
A) Depending on battery in use
B)Limited performance at temperatures < 0°C
Values can vary depending on the product, scope of application and environmental conditions. To find out more, visit www.bosch-professional.com/wac.
Noise/vibration information
Noise emission values determined according to EN 62841-2-2.
Typically, the A-weighted noise level of the power tool is: Sound pressure level 90 dB(A); sound power level 98 dB(A). Uncertainty K = 3 dB.
Wear hearing protection!
Vibration total values ah (triax vector sum) and uncertainty K determined according to EN 62841-2-2:
Tightening screws and nuts of the maximum permitted size:
ah = 9 m/s2, K = 1.5 m/s2
The vibration level and noise emission value given in these instructions have been measured in accordance with a standardised measuring procedure and may be used to compare power tools. They may also be used for a preliminary estimation of vibration and noise emissions.
The stated vibration level and noise emission value represent the main applications of the power tool. However, if the power tool is used for other applications, with different 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.
To estimate vibration and noise emissions accurately, the times when the tool is switched off or when it is running but not actually being used should also be taken into account. This may significantly reduce vibration and noise emissions over the total working period.
Implement additional safety measures to protect the operator from the effects of vibration, such as servicing the power tool and accessories, keeping their hands warm, and organising workflows correctly.
Bosch sells some cordless power tools without a rechargeable battery. You can tell whether a rechargeable battery is included with the power tool by looking at the packaging.
Charging the battery
Inserting the Battery
Push the charged battery into the battery holder until it clicks into place.
Removing the Battery
To remove the rechargeable battery, press the battery release buttons and pull the battery out. Do not use force to do this.
Battery charge indicator
The battery charge indicator indicates the state of charge for a few seconds when the on/off switch is pressed halfway.
LED | Capacity |
3× continuous green light | 60–100% |
2× continuous green light | 30–60% |
1× continuous green light | 5–30% |
1× flashing green light | 0–5% |
Temperature-dependent overload protection
In normal conditions of use, the power tool cannot be overloaded. If the power tool is overloaded or not kept within the permitted battery temperature range, the speed is reduced or the power tool switches off. At reduced speed, the power tool will run again at full speed once the permitted battery temperature is reached or the load is reduced. If it automatically shuts down, switch the power tool off, allow the battery to cool down, then switch the power tool back on.
Recommendations for Optimal Handling of the Battery
Protect the battery against moisture and water.
Only store the battery within a temperature range of −20 to 50°C. Do not leave the battery in your car in the summer, for example.
A significantly reduced operating time after charging indicates that the battery has deteriorated and must be replaced. Follow the instructions on correct disposal.
Changing the tool (see figure A)
Inserting
Pull the locking sleeve (2) forward, guide the application tool (1) into the tool holder up to the stop and release the locking sleeve (2) to lock the application tool.
Use only screwdriver bits with ball catch (13) (DIN 3126E6.3). Other screwdriver bits (12) can be inserted using a universal bit holder with ball catch (11).
Removing the application tool
Operating Principle
The tool holder (1) (with the application tool) is driven by an electric motor via a gear and impact mechanism.
The working procedure is divided into two phases:
Screwing in and tightening (impact mechanism in action). The impact mechanism is activated as soon as the screwed connection runs tight and load is therefore put on the motor. The impact mechanism then converts the power of the motor to steady rotary impacts. When loosening screws or nuts, the process is reversed.
Starting Operation
Set the rotational direction (see figure B)
The rotational direction switch (7) is used to change the rotational direction of the power tool. However, this is not possible while the on/off switch (8) is being pressed.
Right rotation: To drive in screws and tighten nuts, press the rotational direction switch (7) through to the left stop. Left Rotation: To loosen and unscrew screws and nuts, press the rotational direction switch (7) through to the right stop.
Switching on/off
To start the power tool, press and hold the on/off switch (8).
The LED (3) lights up when the on/off switch (8) is lightly or fully pressed, meaning that the work area is illuminated in poor lighting conditions.
To switch off the power tool, release the on/off switch (8).
Adjusting the speed
You can adjust the speed of the power tool when it is on by pressing in the on/off switch (8) to varying extents.
A light pressure on the on/off switch (8) results in a low rotational speed. Increased pressure on the switch causes an increase in speed.
Practical advice
The torque depends on the impact duration. The maximum achieved torque results from the sum of all individual torques achieved through impact. Maximum torque is achieved after an impact duration of 6–10 seconds. After this duration, the tightening torque increases only minimally. The impact duration is to be determined for each required tightening torque. The tightening torque actually achieved should always be checked with a torque wrench.
Screw applications with hard, spring-loaded or soft joints
When the achieved torques in an impact series are measured during a test and transferred into a diagram, the result is the curve of a torque characteristic. The height of the curve corresponds with the maximum reachable torque, and the steepness indicates the duration in which this is achieved.
A torque gradient depends on the following factors:
The following application cases result accordingly:
Guide values for maximum screw tightening torques
Figures given in Nm; calculated from the tensional cross-section; utilization of the yield point: 90% (with friction coefficient µtotal = 0.12). As a control measure, always check the tightening torque with a torque wrench.
Property classes according to DIN 267 | Standard screws/bolts | High-strength bolts | |||||||||
3.6 | 4.6 | 5.6 | 4.8 | 6.6 | 5.8 | 6.8 | 6.9 | 8.8 | 10.9 | 12.9 | |
M6 | 2.71 | 3.61 | 4.52 | 4.8 | 5.42 | 6.02 | 7.22 | 8.13 | 9.7 | 13.6 | 16.2 |
M8 | 6.57 | 8.7 | 11 | 11.6 | 13.1 | 14.6 | 17.5 | 19.7 | 23 | 33 | 39 |
M10 | 13 | 17.5 | 22 | 23 | 26 | 29 | 35 | 39 | 47 | 65 | 78 |
M12 | 22.6 | 30 | 37.6 | 40 | 45 | 50 | 60 | 67 | 80 | 113 | 135 |
Tips
Before screwing larger, longer screws into hard materials, it is advisable to pre-drill a pilot hole with the core diameter of the thread to approx. 2/3 of the screw length.
Maintenance and Cleaning
After-Sales Service and Application Service
Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.
In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com
You can find further service addresses at: www.bosch-pt.com/serviceaddresses
Transport
The recommended lithium-ion batteries are subject to legislation on the transport of dangerous goods. The user can transport the batteries by road without further requirements.
When the batteries are shipped by third parties (e.g. air transport or forwarding agency), special requirements on packaging and labelling (e.g. ADR regulations) must be met. A dangerous goods expert must be consulted when preparing the items for shipping.
Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe the possibility of more detailed national regulations.
General Power Tool Safety Warnings
Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/ or serious injury.
Save all warnings and instructions for future reference. The term "power tool" in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless) power tool.
Work area safety
Electrical safety
Personal safety
Power tool use and care
Battery tool use and care
Service
Safety Warnings for Screwdrivers
Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short-circuiting.
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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