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Appendix
TP
+
ATEX
en-30
2022-D020259
Revision: 04
10.5
Tightening torques for common thread sizes in general mechanical engineering
The specified tightening torques for set screws and nuts are calculated values and are based on
the following conditions:
- Calculation in accordance with VDI 2230 (February 2003 version)
- Friction value for thread and contact surfaces µ=0.10
- Utilization of the yield stress 90%
- Torque tools type II classes A and D in accordance with ISO 6789
The settings are values rounded to usual commercial scale gradations or setting possibilities.
Use the
exact
values in this table to set your tools.
10.6
Technical specifications
10.6.1 Technical data for TP
+
004 for use in potentially explosive atmospheres
Tightening torque [Nm] with thread
Property
class
screw / nut
M3
M4
M5
M6
M8 M10 M12 M14 M16 M18 M20 M22 M24
8.8 / 8
1.15 2.64 5.2
9.0 21.5 42.5 73.5 118 180 258 362 495
625
10.9 / 10
1.68 3.88 7.6 13.2 32.0 62.5 108 173 264 368 520 700
890
12.9 / 12
1.97 4.55 9.0 15.4 37.5 73.5 126 202 310 430 605 820 1040
Tbl-19: Tightening torques for set screws and nuts
Technical data for TP
+
004, 1-stage
Clam-
ping
hub Ø
[mm]
Ratio i
4
5
7
8
10
Max. acceleration torque T
2B
[Nm]
(max. 1000 cycles per hour)
11
38
44
44
28
28
14 / 19
44
44
44
28
28
Nominal output torque T
2N
[Nm]
(At n
1N
)
–
20
20
20
13
13
Emergency stop torque T
2Not
[Nm]
(1000 times possible during the
service life of the gearbox)
11
38
48
67
55
70
14 / 19
85
85
85
55
70
Permissible average input speed
n
1N
[min
-1
]
(With T
2N
and 20 °C ambient
temperature)
–
2310
2310
2800
2800
2800
Max. input speed n
1Max
[min
-1
]
–
4200
4200
4200
4200
4200
Average no-load running torque
T
012
[Nm]
(For n
1
=3000 min
-1
and gearbox
temperature 20 °C)
a
–
0.56
0.48
0.37
0.37
0.31
Max. backlash j
t
[arcmin]
–
Standard ≤ 4 / Reduced ≤ 2
Torsional rigidity C
t21
[Nm/arcmin]
–
12
12
11
8
8