Emerson RTS FQ, Operating Manual

Page: 26 / 90

User Instructions
Part Number IOM – 87376-7 July 2016, Rev 1.
19
Table 3. Torque Thread Table (2)
Thread
Tightening Torque [Nm] for Bolts with Strength Grade
8.8 A2-70/A4-70
M6 11 8
M8 25 18
M10 51 36
M12 87 61
M16 214 150
M20 431 294
M30 1489 564
For output type A (unbored threaded bushing), you must sufficiently lubricate both needle
bearings in the output form after processing and cleaning the spindle nut. For this purpose, use
the optional RTS FQ Fail-Safe Quarter-Turn Series grease lubricant or a grease lubricant according
to our
recommendation (see Section 26.2 , page 84).
12.2 Mounting Position of the Operating Unit
Figure 15 RTS FQ Fail-Safe Quarter-Turn Control System
• Disconnect the actuator and control system from the power supply.
• To prevent damage to the electronic components, both the control system and the
person have to be grounded.
• Undo the bolts for the interface surface and carefully remove the service cover.
• Turn service cover to new position and put back on.
— Ensure correct position of the O-ring.
— Turn service cover by maximum of 180
o
.
— Put service cover on carefully so that no cables get wedged in.
• The bolts evenly in a crosswise sequence.
NOTE:
Maximum torque of 5 Nm.