4342
8. Daily Inspection and Maintenance
Common
(4) Procedures for Filling and Discharging
Grease replenishment procedure for grease lubricated models (excluding long- lifetime grease lubricated models)
[1] Remove the grease discharge plug from the casing.
[2] Use a grease gun to replenish through the grease ttings for the internal cover and the motor ange bracket, using the quantities
of grease shown on P42, Table 8-13 as guidelines. If a grease tting has a metal cap, remove the cap before replenishing. After
replenishing replace the metal cap.
[3] Replace the grease discharge plug.
Table 8-4 Location of Grease Fill and
Discharge Port
(Example: Horizontal, Gearmotor,
2-Stage)
Table 8-5 Location of Grease Fill and
Discharge Port
(Example: Vertical, Gearmotor,
2-Stage)
Table 8-6 Grease Fitting with Metal Cap
- Grease while the machine is running to improve grease distribution.
- In addition to being used for discharging grease, the grease discharge plug also functions as a pressure vent when replenishing
grease. Make certain to remove when replenishing.
- Replenish grease slowly.
- Replenishing more than the quantity shown in Table 8-13 may cause agitation heat, which raises the temperature, and may cause
grease to leak into the motor unit.
- Grease may ooze out of the grease tting after starting the machine. In such a case replace the grease tting with one that has a
metal cap.
- Be careful when handling the metal cap for the grease tting as dropping it from a high place is dangerous.
- Contact the nearest authorized service station concerning changing all of the grease in a grease lubricated model.
8-5 Main Unit Maintenance
- Although it will depend on operation conditions, maintenance with disassembly after approximately 20,000 hours or 3 to 5 years will
further increase lifetime. Contact the nearest authorized service station regarding maintenance with disassembly.
- Oil seals have a lifetime. During long use natural degradation and frictional wear will reduce eectiveness. Reducer operating
conditions and ambient environment will cause lifetime to widely vary. Given normal operation, (uniform load, running 10 hours per
day, normal temperature) as a guideline it is recommended to change them every 1 to 3 years. If the sliding surfaces of oil seals or
V-rings show signs of wear or corrosion, replace them with new ones. Because sliding surfaces for oil seals are made of carbon steel,
take on-going rust prevention measures regularly not to spread rust on them by applying rustproof oil and so on, if there are exposed
surfaces of steel.
- If stop and start are frequent, mounting bolts (or nuts) and ring gear housing fastening bolts (or nuts) may come loose. Periodically
check for looseness as this is a source of miss-alignment, oil leakages, and load unbalance.
Grease tting
Grease tting
Metal cap
Grease discharge
plug
Grease
discharge
plug
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