Agromatic NEx Series, Assembly And Operating Manual, Page: 85 / 112

7 Maintenance and repair 7.2 Maintenance work
Actuators NEx, NEx-K, NEx-KA, NEx-V 79
7.2.4 Series NEx-K
Drive motor and gear ranges
The actuator is lubricated with long-life grease and therefore requires no
maintenance if used as prescribed.
Stroke unit
NOTE
Risk of damage to components due to excessively high friction!
–
Avoid dry operation of the threaded spindle.
Depending on the operating frequency, ambient conditions and the level of
contamination, but
at least every 6 months the threaded spindle must be
cleaned thoroughly and lubricated again.
Special bearing grease from OKS Spezialschmierstoffe GmbH, Munich,
Germany, is applied at the factory:
Properties of bearing grease, type "OKS 410":
−
Temperature range:
−
20 °C to +130 °C
−
Viscosity of the base oil:
o
at 40 °C: 185 mm
2
/s
o
at 100 °C: 14 mm
2
/s
−
worked penetration: 265-295 0.1 mm
NOTE
A grease of equal quality is also permitted.
Normal rolling bearing greases are not suitable for the threaded
spindle!
Procedure (standard)
1. Clean the threaded spindle.
2. Apply a sufficient amount of grease to the threaded spindle.
Procedure (for threaded spindle with bellows, option)
1. Detach the bellows on both sides.
2. Clean the bellows and the threaded spindle.
3. Apply a sufficient amount of grease to the complete threaded spindle.
4. Re-attach the bellows on both sides.