NMRV Worm Gearbox Lubrication Guide – Oil Type, Capacity & Schedule
Recommended Oil:
Standard: ISO VG 320 or VG 460 synthetic gear oil
Synthetic oil recommended for worm gears due to high sliding friction
Standard oil filling capacity for each seat number of NMRV reducer
| frame size | Standard oil injection volume |
| NMRV25~NMRV40 | 0.1~0.3L |
| NMRV50~NMRV75 | 0.5~1.2L |
| NMRV90~NMRV110 | 1.8~3.0L |
| NMRV130~NMRV150 | 4.0~7.0L |
⚠️ Important:
Aluminum units (025-090) come pre-filled with synthetic oil – universal mounting
Cast iron units (110-150) – oil quantity depends on mounting position
Different brands of oil must not be mixed
After oil injection, the oil level should be maintained between the upper and lower markings of the oil gauge. In vertical installation scenarios, the oil level can be appropriately raised to 1.2 times the upper limit.
