Inspection and maintenance intervals

The following table shows the time intervals to be observed and the corresponding measures:

Time interval

Required steps

Daily

  • Check the housing temperature:
    • Mineral oil: max. 90 °C
    • Synthetic oil: max. 100 °C
  • Check the gear unit noise.

Monthly

  • Check the gear unit for signs of leakage.
  • Check the oil level.

After 500 operating hoursNote that under certain conditions you can forgo the first oil change after 500 operating hours. For detailed information, refer to the order documents. If you have any questions, contact SEW‑EURODRIVE.

  • First oil change after initial startup.

Every 6 months

  • Check all the screw fittings and piping for leakage.

Every 3000 operating hours,
at least every 6 months

  • Check the oil consistency.
  • Fill regreasable sealing systems with grease. In dusty environments, regrease every 3 months.
  • Refill sealing grease of the lower bearing on the output shaft with drywell sealing systems. In dusty environments, regrease every 3 months.
  • For V-belt drives: Check the belt tension and condition of the V-belt pulleys and belts.

Depending on the operating conditions,
at least every 12 months

  • Check whether the retaining screws are tightly secured.
  • Check whether the gear unit surface is free of dust and dirt to ensure optimal cooling of the gear unit.
  • Check the breather. Replace, if necessary. It is recommended to replace the breather once a year.
  • Check the alignment of the input shaft and output shaft.
  • Check the condition and leak tightness of all rubber tubes (aging effects).
  • Clean the oil filter. If required, replace the filter element.
  • Check the condition of the motor pump (ONP1/ONP1L). Observe the separate operating instructions. You can find these together with the dimension sheet and further documents in the overall documentation for the gear unit.
  • Check the condition of the oil-air cooler (OAP1/OAC1). Observe the separate operating instructions. You can find these together with the dimension sheet and further documents in the overall documentation for the gear unit.
  • Check the condition of the oil-water cooler (OWP1/OWC1). Observe the separate operating instructions. You can find these together with the dimension sheet and further documents in the overall documentation for the gear unit.
  • Check the condition of the water cooling cartridge /CCT. Perform the work together with the oil change.
  • Check the condition of the water cooling cover /CCV. Perform the work together with the oil change.

Depending on the operating conditions
(see figure in the following chapter)

  • Change the oil. Observe the specifications of the oil manufacturer.

Varies
(depending on external factors)

  • Check the installed hose pipes.
  • Clean the outer gear unit housing.
  • Cleaning the fan
  • Touch up or renew the surface/corrosion protection paint.
  • Replace damaged seals.
  • Replace the backstop.
  • Wear may occur in the backstop when operated below lift-off speed. This is why you should consult SEW-EURODRIVE for defining the maintenance intervals.
  • Check the water cooling cover /CCT or water cooling cartridge /CCV for deposits.
  • Check the oil heater /OH (at same time as the oil change):
    • Check whether all connection cables and terminals are securely fixed and free from corrosion.
    • Clean encrusted heating elements. Replace if necessary.