Liquid-cooled Heavy-duty Coreless Motors

Classification: Brushless Axial field Disk-shaped

Principle Structure

Implemented 3-Module Structure

3-Module Motor (25 kW peak x 3) Pin-type connectors R-side end rotor interposed rotor interposed rotor stator module L-side end rotor stator module stator module

1-Module Motor - general view Right Shield Left Shield Optional mounting threaded holes Fastening rods Wire outlets Main mounting threaded holes Stator Shaft Right Channel Ring Left Channel Ring

1-Module Motor - exploded view Left Bearing Cover Fastening nuts Fastening rods Left Rotor Right Shield Left Shield Shaft Right Channel Ring Left Channel Ring Wire outlets Stator

1-Module Motor - cut-away view Input nipples Outlet nipples Stator Outlet chamber Inlet chamber Place for coils Right Rotor Disk Left Rotor Disk Left bearing Right bearing Shaft

Cooling System Liquid Coolant: DexCool ElectraCool: Prediluted 50/50 Anti-Freeze/Coolant (ethylene glycol) Boiling protection: 129°C (265°F) Freezing protection: -37°C (-34°F) Volumetric flow rate: 5 Gallon/min Inlet fluid temperature: Maximum: 80°C (176°F) Minimum: -18°C (0°F) / -40°C (-40°F) Maximal pressure drop: 1.0 lb/in²

3-Module - Cooling System Cooling liquid outlets Cooling liquid inlet

3-Module - Cooling System First Stator Last Stator Outlet Inlet

Prototypes Gear - box Motor 1-Module Motor (25 kW, 10,500 rpm, OD=260 mm) 1-Module Motor + 75 kW gear-box on test bench