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TECHNICAL FEATURES
Table 1
Model
Code
No-load
IMP8*
8302541
IMP13
8302566
8302567
IMP13AL
8302562
IMP20
IMP20AL
8302563
IMP34
8302564
IMP34AL
8302565
8302570
IMP35
8302571
IMP35AL
* Available also with ¼" hexagon female coupling or with ½" square male coupling.
Noise emission levels determined by using ISO 3746/79; D.Lgt.277/91
Level of vibrations transmitted to the hands and arms determined by using ISO 5349/86
Table 2
Model
Length
Length
L
L1
(mm)
(mm)
130
15
IMP8
158
25
IMP13
IMP13AL
158
72
IMP20
166
25
IMP20AL
230
89
IMP35
IMP35AL
TOOL NOISE
The table of technical specifications indicates the noise level- where the noise level exceeds 85 dB (A) the noise power is
also indicated. Ear protectors must be worn where the noise level exceeds 85 dB (A) at the operator position. We
recommend that you also wear ear protectors below this noise level.
Noise risk and hearing damage are related to the intensity of the noise source and the length of exposure. Noise risk must
be assessed on a case by case basis taking into account these two factors. Measures should be taken to protect the user
against hearing damage in accordance with current Health and Safety regulations.
The formula and table can be used to calculate the daily exposure level for a tool using the use coefficient c. The use
coefficient c for a screwdriver is between 10 and 35%.
Dally exposure
level
TOOL VIBRATION
The table of technical specifications indicates the vibration level for the tool; the vibration level is calculated as the squared
weighted value of the acceleration frequency, Vibration risk is related to the intensity of the vibration source and the length
of exposure. Vibration risk must be assessed an a case by case basis taking into account these two factors. Measures
should be taken to protect the user against vibration injury in accordance with current Health and Safety Regulations.
The formula and table can be used to calculate the daily exposure level for a tool using the use coefficient c. The use
coefficient c for a screwdriver is between 10 and 35%.
Daily exposure
level
Screw
Max
speed
driving
torque
(rpm.)
(mm)
(Nm)
6000
5-10
120
5800
8-14
320
5800
8-14
320
4700
12-18
800
4700
12-18
800
3900
18-33
2400
3900
18-33
2400
3900
18-33
2400
3900
18-33
2400
Dimension
Weight Ø inside
I
(mm)
(kg)
31
1.4
31
2.45
31
2.7
42
5.1
42
5.4
7.3
8.4
L
= L
+ 10 Log
eq,d
eq
a
=
h
8 ,
h
Square
Air
connection
consumpt.
(I/min.)
3/8"
380
1/2"
380
1/2"
380
3/4"
800
3/4"
800
1"
1100
1"
1100
1"
1100
1"
1100
Air
tube T
connect.
min.
G
(mm)
8
1/4" GAS
8
1/4" GAS
8
1/4" GAS
10
3/8" GAS
10
3/8" GAS
13
1/2" GAS
13
1/2" GAS
T
/ T
Te= c T
10
e
0
T
= 8h
0
0
5 ,
t
t = c 8h
a
⋅
h
8
Noise
Screw
Lp
Lw
Lp
(dB(A))
(dB(A)) (dB(A)) (dB(A))
84
95
85
91.5
91.5
87.1
91.5
91.5
87.1
93
101
93
93
101
93
91
100
90
91
100
90
92,1
103,1
93,5
92,1
103,1
93,5
Note: make sure that the performance
features required correspond to those
described above, otherwise it will be
necessary to choose a different model from
the broad range offered by OBER.
L
c
eq
85
10%
0
20%
35%
a
c
h
2,5
10%
20%
35%
GB
Vibrat.
a
Unscrew
h
Lw
2
(m/s
)
90
6.13
86.5
5.7
86.5
5.7
99
4.5
99
4.5
98
8,2
98
8,2
102,5
8,2
102,5
8,2
L
d
eq,
75,0
78,0
80,4
a
h,8h
0,8
1,1
1,5
7
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