Средний приводной Электродвигатель с звездочкой для электрического велосипеда QS 138 3 кВт V2 72
- Категория: Motorcycle Motors >>>
- Поставщик: Taizhou,Quanshun,Motor,Co.,Ltd.
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Описание и отзывы
Трекер стоимости
| Месяц | Минимальная цена | Макс. стоимость |
|---|---|---|
| Sep-18-2025 | 0.34 $* | 0.35 $* |
| Aug-18-2025 | 0.81 $* | 0.5 $* |
| Jul-18-2025 | 0.11 $* | 0.92 $* |
| Jun-18-2025 | 0.7 $* | 0.27 $* |
| May-18-2025 | 0.26 $* | 0.80 $* |
| Apr-18-2025 | 0.63 $* | 0.10 $* |
| Mar-18-2025 | 0.70 $* | 0.10 $* |
| Feb-18-2025 | 0.54 $* | 0.60 $* |
| Jan-18-2025 | 0.99 $* | 0.63 $* |
Характеристики
QS 138 3kW V2 72V electric bicycle mid drive motor with sprocket
For 138 3000W mid drive motor kit assembly, it could be used for electric scooter, electric motorcycle.
It could be 72V 100KPH.
By the way, new 3kW mid drive motor doesn't have assemble kits, it's only available for separate selling.
It can be designed as belt driven ( default ) and sprocket design ( Customized ).
Kits including
1*QS V2 Motor 3000W 138 70H Mid Drive Motor
1*428 14t sprocket
QS Motor Specification
- Item: QS Motor 3000W 138 70H Mid Drive Motor
- Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor
- Brand: QS Motor, QSMOTOR
- Motor Design: Single axle
- Matched Wheel: 12inch Wheel (as default)
- Magnet Height: 70mm, 60pcs, 5 pole pairs
- Diameter of stator: 138mm
- Rated Power: 3000W
- Rated Voltage: 72V as default
- Speed: 100KPH
- No-load rpm: 3800rpm without flux weakening, 6000RPM with flux weakening.
- Max Torque: approx 56N.m without Reduction ratio, approx 247N.m with 1:4.77 Reduction ratio
- Reduction ratio: 1:4.77 (as default)
- Max Efficiency: 88%
- Continuous Battery Current: pending (72V)
- Peak Battery Current: 120A (72V)
- Suggest Peak Phase Current: 450A
- Thermic Probe: None as default (KTY83/122 is available, if you need, please let sales man know).
- Working Temperature: Pending
- Single Hall Plate with waterproof connectors
- 16mm² Cross Section of Phase Wire (not include insulation layer)
- Hall Sensor Phasing angle: 120 degree
- Waterproof Grade: IP54
- Color: Black
- N.W./G.W.: 10.8kgs/11.5kgs
- Package Dimension: 34cm*34cm*33cm
- Axle matched with 428 sprocket, teeth optional(12T, 13T, 14T...etc) 14T as default.
P.S.: For 3kW 138 new mid drive motor, it can be designed as belt driven.(As default)
If you want to buy such mid drive motor, please kindly click below picture.
Drawing
QS 3kW 138 mid drive motor(new appearance)
Matched controller recommendation:
- Item: EM150SP sine wave controller
- Net weight: 2040g
- Rated current: 180A
- Boost current: 220A
- Peak current: 470A
- Max. Power: 12960W
- Flux Weaking Ratio: 100~250%
- Max. Efficiency: 88~93%
- Degree of protection: IP67
If you're interested in buying motor and controller together, please kindly click below picture.
Application
Performance Test
basic RPM
With flux weakening
With belt ratio 1:4.77
How to Recommend you suitable motors?
Firstly, To customize a suitable electric hub motor for your vehicle, could you please inform the points in below?
1. E-bike, E-scooter, E-tricycle or E-car?
2. Weight of vehicle with battery, loading weight (weight with load only)?
3. Tire model/diameter?
4. Rated voltage and wattage of motor, nominal speed/top speed, and climb angle or torque @ what speed?
5. Battery nominal voltage, peak voltage, capacity and vehicle range?
6. What's the drop-outs/rear fork width of your frame?
Within your details information, we could make assessment and calculation accordingly for your project
Company Information
About US
SIAECOSYS is an union of manufactories in electric driving industry, and belongs to Taizhou SIA Trading Co., Ltd that set from QS Factory in 2013 year.
Currently, more than 80 top factories join SIAECOSYS, and they are willing to provide customized products and service for international customers who has passion in e-scooter/tricycle/car industry.
SIAECOSYS focus on organizing member factories together to customize specific e-driving system solution and products for different requirements from customers in the world.
Nowadays, SIAECOSYS has more than 5000 customers from the world and more than 40 customers send inquiry every day.
SIAECOSYS has sale department, Technology department, Quality inspection department, general accounting department, purchase department and after-sale service department.
FAQ
Q1. Are you trader or manufacture?
A: We're manufacture.
Q2. How long is your production time?
A: Generally, the production period is 12-14 working days(6 working days per week).
The specific delivery time depends on the items and the quantity of your order.
Q3. How long is your warranty time?
A: For motor, the warranty time is one year and three months. For other parts, the warranty time is one year.
Q4. About Customs Clearance
For some special countries with strict customs for import, so pls. confirm it firstly to us that you have ability to do customs clearance, otherwise we will not take on heavy responsibilities for this issue, return money and goods are not support.
Special countries list:
Argentina, Brazil, Egypt, Turkey, Iran,Portugal,Romania, Kazakhstan, Ukraine, Yeman etc.
Some countries name not listed, the salesman will inform you in time if you placed the order online directly. Thank you for your understanding.
05. Does your products with CE certification?
Yes, our motor with Certification (CE, CCC), and our factory with certification of ISO9001, TS86949
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