ZheJiang HengJi YongXin New Materials Co., LTD

Internal Rotor

The internal rotor is a core rotating component located inside the motor stator. Typically comprising a shaft, laminated core, and windings, it converts electrical energy into mechanical motion through electromagnetic induction. Characterized by its compact design and high torque density, this configuration enables efficient power transmission while minimizing the overall motor footprint. Internal rotors are widely utilized in applications requiring precise control and reliable performance, such as automotive systems, industrial drives, and precision machinery, where their robust construction ensures durability under continuous operational demands.

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Features of Internal Rotor

High Torque Density
High Torque Density

Optimized magnetic circuit layout enables strong torque output relative to its small volume, supporting heavy-load operations.

Compact Structural Design
Compact Structural Design

Features rotor enclosed within the stator, significantly reducing overall size to fit space-constrained industrial equipment.

Rapid Dynamic Response
Rapid Dynamic Response

Low rotational inertia allows quick acceleration and deceleration, adapting well to real-time motion control demands.

Specifications of Internal Rotor


MaterialsIron-based
Density6.8~7.2g/cm³
Thickness12mm
Inner Diameter
Maximum Outer Diameter32.82mm
ApplicationAutomobile-EOP
ProcessPM
Sintering Conditions1130±5℃
Hardness>62HRB
Weight45.97g


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