7.11 Screw Tightening Torques; Initial Operation - Pfaff SHE Series Operating Instructions Manual

Worm gear screw jack SHE type1 and type2
GB
High-performance screw jack HSE type1 and type2
7.10.3 Joint heads

7.11 Screw tightening torques

Coarse-pitch thread
M 4
M 6
M 8
M 10
M 12
M 16
M 20
M 24
M 27
M 30
M 36
M 42
M 45
M 48
M 56
8

Initial operation

Always observe and follow these operating instructions when using the equipment.
Any use other than the intended use is prohibited.
Commissioning may only be performed by authorised personnel.
Check lubrication level.
Check limit switches.
Pay attention to the proper polarization of the electrical installation the the motor's sense of direction.
Put lift unit into operation without a load. (1x lifting 1x lower)
Operate intermittently, gradually increasing the load.
During initial operation, constantly control the operating temperature, the motor's current consumption and
the spindle contact pattern.
After 5 hours of operation, check that the screws are tight. Retighten where necessary.
Monitor the lubrication film and the screw temperature during the run-in phase. Rapid lubrication
consumption and excessive temperature indicate undue lateral forces even if the power-on time and the
maximum power specifications are complied with.
Carry out commission and run-in phase in secure explosive-free atmosphere.
Check the earthing of the mounted parts. (Discharge resistance less than 10
Units for spaces with explosion hazards should be checked by a specially authorised person before
commissioning. (TRBS 1203-1). Observe the ATEX safety instructions in Chapter 3.2.
Check that the ATEX marking corresponds to the existing atmosphere.
Subject to technical modifications
Screw jacks with joint heads are available as special models.
When using joint bearings or joint heads, a torsional lock needs to be installed on
the gear side.
Quality 8.8
2,8
9,5
23
46
79
195
390
670
1000
1350
2330
3676
5502
5636
8856
Design changes under reserve
T13.01.000.0000.0003
2019/04 Rev. Index E
Tightening torque M
A
Quality 10.9
4,1
14
34
68
117
280
560
960
1400
1900
Sous réserve de modifications techniques !
[Nm]
Quality 12.9
4,8
16,5
40
79
135
330
650
1120
1650
2250
Ω)
6
19