Guide to Lubrication Maintenance for Gear Transmission Systems
Provides lubricant selection principles for gear transmission systems, oil change intervals, and oil testing methods to help companies extend gear ser
Lubricating Oil Selection Principles#
1. Viscosity Selection#
| Gear Type | Ambient Temperature | Recommended Viscosity (ISO VG) |
|---|---|---|
| Enclosed gearbox | -10~40°C | VG 150~320 |
| High-speed gearbox | 0~50°C | VG 68~150 |
| Worm gear | -5~40°C | VG 320~680 |
| Open gearing | -10~50°C | VG 1000~1500 |
2. Lubricating Oil Types#
- Mineral oil: general-purpose
- Synthetic oil (PAO): high-temperature resistance
- Polyalkylene glycol (PAG): suitable for worm gears
- Extreme pressure (EP) oil: suitable for heavy loads
Oil Change Intervals#
| Operating Conditions | First Oil Change | Regular Oil Change |
|---|---|---|
| Continuous operation | 500h | 2000~3000h |
| Intermittent operation | 1000h | 4000~6000h |
| High temperature/heavy load | 300h | 1000~1500h |
Routine Maintenance Key Points#
- Daily: oil level, oil temperature, abnormal noise
- Weekly: oil sample appearance
- Monthly: filter status
- Quarterly: send oil samples for testing
- Annually: comprehensive overhaul
Proper lubrication maintenance can extend gear life by 2~3 times.