Commissioning After Maintenance - Beckhoff AG2250 Documentation

4.4.2.3 Lubrication
Damage to the gear unit due to overheating of the components
Inadequate lubrication of the components may lead to damage to the gear unit due to over-
heating.
CAUTION
• Calculate the usable life of the lubricant used
• Relubricate all relevant components as required
4.4.2.3.1 Calculating the usable life of the lubricant
To calculate the usable life of your lubricant, proceed as follows:
• Measure the temperature at the center of the housing in maximum operating state. The gear unit has
reached thermal steady state when the temperature increase no longer exceeds 2 °C per hour.
Damage to the gear box due to exceeding of the maximum permitted temper-
ature
If the maximum permitted temperature for the gear unit is exceeded, the gear unit may be-
CAUTION
come damaged due to overheating.
• Ensure correct and adequate cooling, positioning and installation of the gear unit, in or-
der to avoid exceeding the maximum permitted temperature.
• Switch off the machine / system as soon as the limit value is reached and the maximum
temperature is exceeded.
• Add 10 °C to the measured temperature.
• Now determine the usable life of the lubricant based on the table below.
4.4.3

Commissioning after maintenance

• Clean the gear unit externally.
• Attach all safety devices.
• Perform a test run before releasing the gear unit again for operation.
AG2250 Version: 1.4
Handling
13