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10 | English
Adjusting the speed
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (10) to varying extents.
A light pressure on the on/off switch (10) results in a low ro-
tational speed. Increased pressure on the switch causes an
increase in speed.
Preselecting the speed/impact rate
(Not included with power tools with article numbers
"3 601 JE0 0F." and "3 601 JE0 1F.")
You can use the button (6) to preselect the required speed/
impact rate in two stages. Press the button (6) repeatedly
until the required setting appears in the speed indicator (5).
The selected setting will be saved.
The required speed/impact rate is dependent on the mater-
ial and the work conditions and can be determined by prac-
tical trials.
Switching the "PowerLight" lamp on/off
(Not included with power tools with article numbers
"3 601 JE0 0F." and "3 601 JE0 1F.")
Press the button (4) to activate the lamp (3). To switch off
the lamp (3), press the button (4) again.
Practical advice
Only apply the power tool to the screw/nut when the
u
tool is switched off. Rotating tool inserts can slip off.
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.
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
µ
= 0.12). As a control measure, always check the tightening torque with a torque wrench.
total
Property Classes
Standard Screws/Bolts
according to
3.6
4.6
DIN 267
M6
2.71
3.61
M8
6.57
8.7
M10
13
17.5
M12
22.6
30
M14
36
48
M16
55
73
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.
Belt clip (see figure E)
You can use the belt clip (17) to hang the power tool on a
belt, for example. You then have both hands free and the
power tool is always at hand.
Holder (see figure F)
1 609 92A 8N0 | (10.01.2024)
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.
5.6
4.8
6.6
5.8
4.52
4.8
5.42
6.02
11
11.6
13.1
14.6
22
23
26
29
37.6
40
45
50
60
65
72
79
92
98
110
122
You can use the holder (18) to hang the power tool on a ca-
rabiner, for example. You then have both hands free and the
power tool is always at hand.
Coloured clip (see figure G)
You can use the coloured clip (19) to individually identify the
power tool.
High-strength Bolts
6.8
6.9
8.8
10.9
7.22
8.13
9.7
13.6
17.5
19.7
23
33
35
39
47
65
60
67
80
113
95
107
130
180
147
165
196
275
Bosch Power Tools
12.9
16.2
39
78
135
215
330
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