Planetary gearbox.
Propeller in stainless steel with self-cleaning profile.
• Rpm: 320 - 940 (50Hz) (380 - 1130 (60Hz))
• Motor power: 1,5 - 25 kW (2 - 34 HP)
• Axial thrust: 230 - 5396 N (52 - 1206 lb)
• Capacity: 643 - 10138 m³/h (2831 - 44638 US gpm)
• Max working temp: 40 °C (104 °F)