Industrial Electric Hub Motor

The Industrial Electric Hub Motor is a high-efficiency series manufactured by Qianjiang Motor and offered at factory-direct prices. As a highly integrated, all-in-one direct-drive power unit, it features an outer-rotor brushless design that consolidates the motor, reduction mechanism, precision encoder, braking system, and wear-resistant wheel body into a single hub assembly.

This product eliminates the need for conventional drive configurations, which typically separate the motor, gearbox, drive shaft, and wheel, offering a simplified structure, high-torque direct drive, precise control, and excellent adaptability. It is ideally suited as a core drive component for AGVs, AMRs, industrial robots, intelligent logistics equipment, and automated mobile platforms.

Product Structure

● Brushless Motor Core

The Industrial Electric Hub Motor utilizes a mature outer-rotor permanent magnet brushless structure, featuring a fixed central stator and a rotating outer rotor.

Leveraging the high-inertia and high-torque characteristics of the outer-rotor design, it delivers ample power without the need for multi-stage gear reduction. It eliminates friction losses associated with carbon brushes, ensuring stable operation and a long service life.

● Precision Reduction Mechanism

It features a built-in miniature planetary gear reduction system. This integrated design saves external space while precisely amplifying output torque and reducing rotational speed. It meets the requirements of industrial applications involving low-speed, heavy-load, and smooth movement, while also providing a cushioning effect during startup and shutdown.

● High-Precision Encoder

Equipped as standard with an industrial-grade Hall or incremental encoder, it provides real-time feedback on rotational speed, position, and travel distance.

It ensures stable signal transmission and accurate counting, supporting precise speed control, fixed-point start/stop, differential steering, and accurate positioning.

● Braking Module

An optional electromagnetic holding brake is available; it instantly locks the hub upon power loss, preventing the equipment from rolling or sliding.

It offers strong static holding force and smooth braking, making it suitable for demanding industrial conditions such as high-rack warehousing, ramp navigation, and heavy-load stationary parking.

● Wear-Resistant Hub and Wheel Body

The product comes standard with an industrial-grade PU (polyurethane) wheel tread that is quiet and wear-resistant. It is non-slip, durable, and crush-resistant, suitable for various industrial surfaces like concrete, epoxy flooring, and anti-slip steel plates. It poses no risk of tire punctures and operates quietly without leaving scratches.

● Sealed Protective Housing

The fully enclosed, integrated die-cast housing features multi-layer sealing technology to protect against dust, water, oil, and debris. It is suitable for complex industrial environments involving workshop dust, humidity, and scattered debris, with a standard protection rating of IP54 or higher.

● Integrated Wiring Harness

A standardized, all-in-one wiring harness integrates power supply, Hall signal, and brake control lines. It offers simple, versatile connectivity compatible with mainstream industrial drives and PLC control systems, facilitating easy installation and commissioning.

Operating Principle

The industrial electric hub motor generates power and enables precise control by combining the principle of permanent magnet electromagnetic induction with integrated direct-drive technology. Its operational logic is as follows:

Upon power-up, the industrial controller outputs precise current signals to regulate the motor's stator windings, generating a uniform rotating magnetic field.

The outer permanent magnet rotor rotates under magnetic force; after torque amplification via an internal reduction mechanism, it directly drives the integrated hub/wheel assembly. This eliminates the need for intermediate transmission components such as drive shafts or differentials, enabling direct propulsion of the equipment.

During operation, a high-precision encoder captures real-time data on hub speed and position, feeding this information back to the control system to establish a closed-loop control mechanism. This facilitates stepless speed regulation, precise positioning, differential steering, and constant-speed travel.

Equipped with an electromagnetic braking module, the system supports dynamic deceleration and static locking, delivering an integrated, closed-loop workflow, encompassing power output, precise regulation, and safe braking, that meets the demands of intelligent industrial automation control.

Product Specifications

Product Applications

● Intelligent Warehousing and Logistics Equipment: AGVs (Automated Guided Vehicles), AMRs (Autonomous Mobile Robots), warehouse sorting robots, and logistics tow carts; enabling precise material handling, autonomous navigation, and fixed-point unloading.

● Industrial Automation Equipment: Mobile work platforms, mobile CNC equipment, assembly line transfer units, and intelligent mobile lifting systems; designed for intelligent mobile operations within automated production lines.

● Intelligent Inspection Robots: Robots for facility, server room, power grid, and security inspections; featuring smooth movement, precise positioning, and all-weather operational capabilities.

● Commercial and Industrial Mobility Equipment: Light-duty industrial forklifts, electric transport carts, factory-floor personnel carriers, and medical transfer equipment; offering quiet, smooth operation and reliable load-bearing capacity.

● Specialized Intelligent Equipment: Disinfection robots, cleaning robots, intelligent harvesting equipment, and compact heavy-duty mobile tooling; suitable for a wide range of customized intelligent mobile application scenarios.

Collaboration Process

1. Requirements Discussion and Business Engagement

Qianjiang Motor's technical sales managers and senior motor engineers will consult with you one-on-one to clarify project requirements and key technical specifications.

2. Engineering Assessment and Design

Electromagnetic Simulation: The R&D team calculates magnetic circuits, coil windings, and slot fill factors based on speed, torque, and voltage requirements.

Structural and Thermal Design: We provide 2D/3D structural drawings and design waterproofing, sealing, and thermal management solutions.

3. Drawing Confirmation and Agreement Signing

We provide detailed product specifications and 3D installation drawings.

Once both parties confirm the drawings, a technical agreement is signed, and we provide quotations for prototyping as well as tiered pricing for mass production.

FAQ

Q: How do I choose the gear reduction ratio?

A: High reduction ratio (1:20–1:30): Delivers high torque, strong climbing ability, and stable operation; suitable for heavy loads, frequent start-stop cycles, and inclined surfaces.

Low reduction ratio (1:10–1:15): Offers higher speeds and greater travel efficiency; suitable for light loads, steady-speed cruising, and flat terrain.

Q: Are different voltages (24V/36V/48V) interchangeable?

A: No, they are not interchangeable; the motor must strictly match the rated voltage.

Connecting a low-voltage motor to a high-voltage source will instantly burn out the coils. Conversely, connecting a high-voltage motor to a low-voltage source results in insufficient power, unstable speed, and frequent shutdowns due to protection triggers. The voltage must align with the controller and power system specifications.

Q: Can the hub motor operate at high speeds?

A: Industrial electric hub motors are designed for low-speed, high-torque, and stable heavy-load operation; they are not suitable for high-speed applications.

The recommended speed for standard industrial safety operations is ≤300 rpm. Excessive speeds can cause severe vibration, positioning inaccuracies, accelerated bearing wear, and increased failure rates, thereby compromising the core requirement for stable industrial equipment operation.