E-Bike Spoke Hub Motor

The E-Bike Spoke Hub Motor is a core drive component for electric bicycles, personal mobility e-bikes, and bicycle-to-electric conversion systems, manufactured and supplied by Qianjiang. It can be assembled directly with standard rims and spokes, eliminating the need to replace the entire wheelset.

The motor features an outer-rotor permanent magnet brushless design, ensuring gearless operation, low noise, high efficiency, stable performance, and a low failure rate. It covers a power range of 350W to 2000W and supports multiple voltage configurations (36V, 48V, and 60V), making it suitable for various applications such as daily commuting, long-distance riding, light-duty hill climbing and hauling, and converting conventional bicycles into e-bikes.

Technical Specifications

Why Choose an E-Bike Spoke Hub Motor?

1. Spoke-Compatible Design

Utilizing a standard 36-hole spoke configuration, this motor fits a wide range of bicycle rims (16–29 inches). It retains the traditional spoked wheel structure, eliminating the need for specialized integrated hub wheels.

It allows for cost-effective electric conversion of vintage bikes, standard mountain bikes, and city commuters. Compared to integrated hub motors, it offers broader compatibility and lower maintenance costs; if the wheel deforms, the rim and spokes can be replaced individually without replacing the entire motor unit.

2. Quiet, Sensorless Brushless Operation

Equipped with a brushless motor featuring pure copper windings, it operates without mechanical friction or high-frequency noise. Acceleration is smooth, linear, and jerk-free, while high-speed riding remains quiet. Power delivery is steady, effectively eliminating the abnormal noises, vibrations, and stuttering starts common in older motor designs.

3. High Efficiency and Energy Savings

Precision optimization of the magnetic circuit and windings achieves an energy conversion efficiency of 85%–90%, resulting in lower energy consumption during low-load commuting.

With the same battery capacity, this product offers superior range compared to standard, less efficient hub motors. It reduces daily power consumption and charging frequency, making it ideal for city commuting, short-distance travel, and daily round-trip rides.

4. Ample Torque

Featuring an outer-rotor design for high torque, it delivers strong low-speed traction, powerful acceleration from a standstill, and robust hill-climbing capability.

It handles urban inclines, steep residential ramps, and slightly bumpy roads with ease, while also supporting light loads—such as carrying a passenger or transporting goods.

5. Water and Dust Resistance

The precision-sealed housing provides excellent water and dust resistance, standing up to rainy conditions, puddles, and flying debris or grit.

Internal components, including coils, magnets, and Hall sensors, are protected from moisture and dust, effectively minimizing the risk of short circuits, electrical leakage, and mechanical jams. Its durability makes it highly suitable for long-term, daily commuting.

6. Simple Maintenance

The brushless design eliminates the need for carbon brush replacements over the motor's lifespan, resulting in fewer wear-prone parts and a lower failure rate. The split-spoke structure facilitates easy maintenance; deformed wheelsets or broken spokes can be repaired or replaced individually, eliminating the need to replace the entire motor assembly.

Suitable Applications

● Electric conversion and upgrades for standard mountain bikes and city bicycles

● OEM components for GB-compliant electric bicycles and lightweight electric scooters

● Campus commuting, short-distance urban travel, and daily local transport

● Powertrain systems for low-speed transport vehicles in residential complexes, shopping centers, and industrial parks

● Light-load hauling, carrying passengers, and riding on routes with frequent inclines

Qianjiang OEM/ODM Services

Qianjiang Motor offers one-stop customization services, spanning from initial concept and blueprint design to mass production, to help you shorten your product development cycle:

Requirement Consultation and Drawing Review ➔ Solution Design and Controller Matching ➔ Prototype Fabrication and Testing ➔ Small-Batch Validation ➔ ISO9001-Standard Mass Production and Delivery

Customization Support: Tailored development based on customer-provided dimensional drawings or functional specifications, covering shaft diameter, gear ratio, mounting hole configuration, and controller compatibility.

Flexible Collaboration: Support for flexible supply chain collaboration models, including component sourcing, OEM contract manufacturing, and consolidated container shipping.

FAQ

Q: What is the difference between a spoke-style hub motor and an integrated hub motor? How should I choose?

A: The core difference lies in structure and serviceability:

Spoke-style hub motors feature a modular, assembly-based design that pairs with standard rims and spokes. They offer high versatility and low modification costs; if the wheel deforms, individual parts can be repaired or replaced. They are ideal for users looking to retrofit bicycles, seeking cost-effectiveness, or wanting hassle-free long-term maintenance.

Integrated hub motors come as a single, unified wheel unit. They offer a sleeker aesthetic and a polished factory finish, but the rim cannot be replaced separately, if damaged, the entire unit must be replaced.

We recommend spoke-style hub motors for retrofitting projects, whereas integrated hub motors are the preferred choice for factory-standard complete bikes.

Q: What rim sizes are compatible with the E-Bike Spoke Hub Motor?

A: This product utilizes the industry-standard 36-hole configuration, making it compatible with all standard bicycle rims ranging from 16 to 29 inches. It is suitable for retrofitting mountain bikes, city commuters, and vintage-style bicycles.

Assembly requires only matching the rim's hole count and spoke length; no frame modifications, drilling, or cutting are needed. It fits the vast majority of consumer two-wheeled bicycles.

Q: Is the spoke-style hub motor noisy during operation?

A: The product features a gearless, brushless, purely electromagnetic drive structure. There is no mechanical friction noise; during normal operation, it produces only a faint, low-frequency electromagnetic hum, ensuring a quiet and pleasant ride.

Unlike geared motors, there is no gear meshing or wear, so issues like gear whining, stuttering, or abnormal noises do not occur over long-term use.

Q: How do I choose between motors of different power ratings?

A: 350W: Best for solo commuting on flat city roads; energy-efficient with long range.

500W: Balances performance on flat roads and gentle slopes; suitable for carrying a passenger or light loads; offers the best value.

800W–1000W (and above): Ideal for steep hills, frequent heavy loads, and long-distance riding; delivers abundant power to meet high-intensity riding demands.