AUMA Electric multi-turn actuators SA 07.1 - 48.1_SAR 07.1 - 30.1 NORM - Manual (Page 9)

Finish machining of stem nut (output drive type A):
The output drive flange does not have to be removed from the actuator. .
Remove spigot ring (80.2, figure B-1) from mounting flange.
.
Take off stem nut (80.3) together with thrust bearing (80.01) and thrust bearing
races (80.02). .
Remove thrust bearing and thrust bearing races from stem nut.
.
Drill and bore stem nut and cut thread.
When fixing in the chuck, make sure stem nut runs true! .
Clean the machined stem nut.
.
Apply Lithium soap EP multi-purpose grease to thrust bearing and races, then
place them on stem nut. .
Re-insert stem nut with thrust bearings into the mounting flange. Ensure that
dogs are placed correctly in the slots of the hollow shaft. .
Screw in spigot ring until it is firm against the shoulder.
.
Press Lithium soap EP multi-purpose grease on mineral oil base into the grease
nipple with a grease gun (for quantities, refer to table below):
Protection tube for rising valve stem
.
Protection tubes may be supplied loose. Seal thread with hemp, Teflon tape, or
thread sealing material. .
Screw protection tube (1) into thread (figure B-2) and tighten it firmly.
.
Push down the sealing (2) to the housing.
.
Check whether cap (3) is available and without damage.
9
Multi-turn actuators SA 07.1 – SA 48.1 / SAR 07.1 – SAR 30.1
Operation instructions AUMA NORM
Figure B-1
80.3
80.2
Output drive type A
Stem nut
80.01/80.02
Output drive A 07.2 A 10.2 A 14.2 A 16.2 A 25.2 A 30.2 A 35.2 A 40.2 A 48.2
Qty 1) in g 1.5 g 2 g 3 g 5 g 10 g 14 g 20 g 25 g 30 g
1) For grease with a density ρ = 900 g/dm 3 ; conversion factor: 1 oz corresponds to 28.35 g
Table 3: Grease quantities for lubricating bearings
Figure B-2: Protection tube for rising valve stem
3
1
2