Cordless hand-operated impact screwdriver
IDC 15-2/IWC 18-2 TEC can tighten bolts
with the following mechanical properties in
hard joints:
(Strength category in accordance with EN 20898-1.)
IDC 15-2 TEC (M/Nm):
4.8
5.6
M12 37.6
40
M14
60
65
M16
92
98
122 147 196
M18 126 135 168 202 270
M20 178 190 238 286
IWC 18-2 TEC (M/Nm):
4.8
5.6
M14
60
65
M16
92
98
122 147 196 232
M18 126 135 168 202 270
M20 178 190 238 286 385
M22 240 255 320 385
The required tightening time can be deter-
mined according to the enclosed chart:
IDC 15-2 TEC:
M (Nm)
250
200
150
100
M8
50
0
0
2
4
16
5.8
6.8
8.8 10.9 12.9
50
60
80
113 135
79
95
130 180
–
–
–
–
5.8
6.8
8.8
9.8 10.9
79
95
130 152 180
–
–
–
–
6
8
IWC 18-2 TEC:
M (Nm)
350
300
250
200
–
–
150
–
–
100
50
0
0
–
Depending on the type of parts to be tight-
–
ened, every particular case should be tested
–
individually. Impacts longer than 10 s can
–
no longer cause any increase of the tight-
ening torque.
Smaller bolts can be tightened only
in soft joints the tightening time can
be even shorter than 1 s to prevent
bolt damage (average impact time 2
to 3 s).
M16
► With the use of torsion rods, bolts start-
M14
ing with size M8 can be tightened.
M12
► It may happen that during screw joints
loosening (rusty screws etc.) even the
above indicated maximum impact time
(10 s) will not be suffi cient. In such cas-
es it is advisable to let the mechanism
act intermittently – roughly in cycles of
10 s impacts and 10 s idle run to let the
screwdriver cool down.
10 t (s)
M8
2
4
6
WARNING
M20
M16
M14
M12
8
10 t (s)