Bedienungsanleitung Bosch GDS 18V-1050 HC (Seite 23 von 307) (Alle Sprachen)

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Practical advice

uOnly apply the power tool to the screw/nut when the

tool is switched off. Rotating tool inserts can slip off.

uThe power tool with inserted Bluetooth® Low Energy

ModuleGCY42 (accessory) is equipped with a radio

interface. Local operating restrictions, e.g. in aircraft

or hospitals, must be observed.

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 seats

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 cor-

responds with the maximum reachable torque, and the

steepness indicates the duration in which this is achieved.

A torque gradient depends on the following factors:

– Strength properties of the screws/nuts

– Type of backing (washer, disc spring, seal)

– Strength properties of the material being screwed/bolted

together

– Lubrication conditions at the screw/bolt connection

The following application cases result accordingly:

– A hard seat is a metal-to-metal screw application which

uses washers. After a relatively short impact duration, the

maximum torque is reached (steep characteristic curve).

Unnecessary long impact duration only causes damage to

the machine.

– A spring-loaded seat is also a metal-to-metal screw ap-

plication but uses spring washers, disc springs, studs or

screws/nuts with conical seats. It is also called a spring-

loaded seat when extensions are used.

– A soft seat is a screw application of e.g. metal on wood or

a screw application that uses lead washers or fibre wash-

ers as backing.

For a spring-loaded seat as well as for a soft seat, the max-

imum tightening torque is lower than for a hard seat. Also, a

clearly longer impact duration is required.

Guide values for maximum screw tightening torques

Figures given in Nm; calculated from the tensional cross-section; utilisation 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 High-strength screws

3.6 4.6 5.6 4.8 6.6 5.8 6.8 6.9 8.8 10.9 12.9

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

M14 36 48 60 65 72 79 95 107 130 180 215

M16 55 73 92 98 110 122 147 165 196 275 330

M18 75 101 126 135 151 168 202 227 270 380 450

M20 107 143 178 190 214 238 286 320 385 540 635

M22 145 190 240 255 290 320 385 430 510 715 855

M24 185 245 310 325 370 410 490 455 650 910 1100

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.

Note: Ensure that no metal particles enter the power tool.

After working at a low speed for an extended period, you

should operate the power tool at the maximum speed for ap-

proximately three minutes without load to cool it down.

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 indic-

ates that the battery has deteriorated and must be replaced.

Follow the instructions on correct disposal.

Ladder clip

You can use the utility clip(4) for hanging the power tool to a

ladder, for example.

The screw of the ladder clip must be tightened

using a tightening torque of approx. 2.0–

2.5Nm.

Control Via App

GDS 18V-1000C / GDS 18V-1050HC:

The power tool can be fitted with a Bluetooth® module which

enables wireless data transfer to certain mobile devices with

a Bluetooth® interface (e.g. smartphone, tablet).

In order to control the power tool via Bluetooth®, you will

need the "Bosch Toolbox" app. Download the app from the

corresponding app store (AppleApp Store, Google Play

Store).

Bosch Power Tools 1 609 92A 7X5 | (04.07.2022)

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