4.3.1.1. Stem Nut: Finish Machining - AUMA SAEx 07.2 Operation Instructions Manual

Assembly
Design
Information

4.3.1.1. Stem nut: finish machining

16
Output mounting flange [1] with axial bearing stem nut [2] form one unit. Torque is
transmitted to valve stem [3] via stem nut [2].
Figure 9: Design of output drive type A
[1] Output mounting flange
[2] Stem nut with dog coupling
[3] Valve stem
To adapt the actuators to available output drive types A with flanges F10 and F14
(year of manufacture: 2009 and earlier), an adapter is required. The adapter can be
ordered from AUMA.
This working step is only required if stem nut is supplied unbored or with pilot
bore.
Figure 10: Output drive type A
[1] Stem nut
[2] Axial needle roller bearing
[2.1] Axial bearing washer
[2.2] Axial needle roller and cage assembly
[3] Spigot ring
1. Remove spigot ring [3] from output drive.
2. Remove stem nut [1] together with axial needle roller bearings [2].
SAEx 07.2 SAEx 16.2 / SAREx 07.2 SAREx 16.2