QS Motor 500W - 3000W 205 14kW peak brushless dc electric bike bicycle spoke hub motor

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Brushless, Brushless DC motor
> 400w
QS Motor
DIY, Two Halls, High-Efficiency
Motor Manufacturer:
Taizhou Quanshun Motor Co., Ltd.
Protect Feature:
Max. speed:

Packaging & Delivery

Selling Units:
Single item
Single package size: 
34X34X33 cm
Single gross weight:
14.0 kg
Package Type:
QS Standard export packing 1. polyfoam + carton box 2. Or according to customer's requirements
Picture Example:
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QS Motor 500W - 3000W 205 14kW peak brushless dc electric bike bicycle spoke hub motor


For 205 spoke hub motor, it could be used for electric bike, high power electric bicycle.

205 motor means the diameter of iron ring of rotor is 205mm, for all 205 motor, e.g. 10inch & 12inch 205 e-scooter hub motor, 205 spoke hub motor, 10inch & 12inch 205 single shaft hub motor, etc., the configuration & performance is the same as 10inch 205 Hub Motor.


It could be E-Bike Standard & Moped Standard.

1.E-Bike Standard, Disc Brake PCD6*44mm, Dropout 135mm-150mm.

For 500W 27H V1 Spoke Hub Motor, it's 135mm dropout for single/3 speed freewheel.

For 800W~3000W motor, it's 150mm~154mm dropout for sinlge/3 speed freewheel.

There are 800W 30H V1 & V2, 1000W 35H V1 & V2, 1000W 40H V1 & V2,

1200W 43H V1 & V2, 1500W 45H V1 & V2, 40H V3, 2000W 50H V1 & V2, 45H V3,

3000W 50H V1 & V2 & V3.

PS. 1000W 205 35H V1 E-bike Hub Motor, 135mm dropouts for 7 speed freewheel is under developing.


2. Moped Standard, Disc Brake 3*80mm, dropout 200mm.

It could be 500W-3000W.


Product List

QS Motor 500W-3000W 205 Electric Bike Spoke Hub Motor
PowerMagnetVersionBattery CurrentSpeed (KPH)Torque2017 Price 2016 Price 
35HV235~40A21-5026-5032-5094N.m /
1200W43HV145A 21-5526-5532-55/ /
43HV240~45A21-6026-6032-60/ /
1500W45HV140~55A21-5526-5532-55129N.m /
40HV355A21-6026-6032-60148N.m /

PS. 1. Above quotation base on 205 electric bike spoke hub motor.

      2. For 205 motor, the voltage is 48V~96V.

      3. Above configuration is suggested for mass production,

for EV enthusiast, V2 & V3 motor could be over-voltaged to gain more speed (customizable).

      4.There are more powerful e-bike standard hub motor, 3000W & 4000W 273 Spoke Hub Motor, 152mm dropout, PDC6*44mm, 12mm axle flats.


QS Motor 500W~3000W 205 Brushless DC Electric Bike Spoke Hub Motor List

Refer to the hyperlink 

QS Motor High Power 500W-16000W Brushless DC Gearless Electric Wheel Hub Motors List

Latest News & more information, Refer to the hyperlink of homepage. 



Product Description



QS Motor Specification (e.g. 3000W 205 50H V3)

Item: QS MOTOR 3000W 205 50H V3 BLDC Electric Bike Bicycle Spoke Hub Motor

  • Motor Type: BLDC Permanent Magnet Outer Rotor In-Wheel Hub Motor With Hall Sensor
  • Brand: QS Motor,QSMOTOR
  • Motor Design: Double axle without rim (not integrated), 36 spoke holes, OD 4.2mm 
  • Matching Rim size: 24inch, 26inch E-Bike Wheel, 17inch, 18inch, 19inch moped wheel.
  • Magnet Height: 50mm, 16 pole pairs
  • Stator: Aluminmum Core
  • Rated Power: 3000W (could be 14000W peak in few seconds) 
  • Rated Voltage: 72V as default (48V-96V, optional)
  • Speed: 80KPH as default (24-120KPH, optional) 
  • kV: 6.3/7.3/8.1/8.3/9.0(as default)/10.6/11.4/13.3/14.3/16.3/17.7 etc.
  • Max Torque: approx 182N.m
  • Max Efficiency: 86-91%
  • Continuous Battery Current: 52A (72V)
  • Peak Battery Current: 104A (72V)
  • Suggest Peak Phase Current: 196-245A (depend on the kV)
  • Thermic Probe: KTY83/122 (as default, optional)
  • Working Temperature: 70-120℃ , peak 150 ℃ 
  • Brake type: Bike Disc brake, PCD6*44mm(as default)
  • Drop-outs/Rear Fork Width for installation: 150-154mm
  • 14mm english thread length for single/3 speed freewheel
  • 10mm axle flats
  • Dual Hall Set with waterproof connectors
  • 10mm² Cross Section of Phase Wire (not include insulation layer)
  • Hall Sensor Phasing angle: 120 degree
  • Waterproof Grade: IP54
  • Color: Black (as default), White/Luminous (extra $5.0)
  • N.W./G.W.: 12.5kg/14.0kg   Package Dimension: 34cm*34cm*33cm/piece

Btw., someone may call it 5000W or 6000W rated hub motor, it's the same.

For the max continuous rating power, the data should be tested in lab, which means no further temp rise at the power (e.g. 100 degree inside of motor at the power). Unluckly, all the continuous power rating is not done yet.

Due to our understanding and feedback of customer, for 205 3000W motor, the max continuous power could be 6000W, peak power 12kW (even 18kW). For EV enthusiastic, they could input more power to enjoy the high performance, but the motor might suffer from over heating or even burnt. For EV Manufacture, we should notice the potential performance of motor, and keep some allowance for the whole e-scooter kits. include motor, controller, battery. to get them as stable as possible & decress the repair rate (consider all the usage environment). E.g. 3000W as continuous rating power.


PS. Temp Sensor Options: KTY84/130, KTY83/122, 10K@25C NTC(model MF58-103F3950).

QS Motor could work 120 ℃ in half an hour without damage. 

Suggestion (Setting of Controller)
When it's 130 ℃ inside of motor (in 30s), the current should be limited 50%.

When it's 150 ℃, the controller shut down. When it drop down to 110℃, the controller work again.


For windings of 205 50H V3.


More QS Motor Informaiton:

Optional Appearance 

Motor Details, drawing, performance curve/test report are available.

For more information, please feel free to contact with us.



For samples, "QSMOTOR" logo is laser print on side cover as default.

Meanwhile, the logo could be customized with below essential document.

· Please provide high definition logo in jpg format.

· Brand Letter of Authorization.

· Certificate of Trademark Registration

· Please advise the position & Size of your logo on side cover.


Buying Guides


How to find suitable hub motor

To customized a suitable motor, could you pls. inform below points: 

  • 1.E-scooter, E-tricycle or E-car, tire model? 
  • 2.Volt and wattage of motor, Speed(kV), and torque/climb angle ?  
  • 3.Your vehicle weight and loading weight?  
  • 4.Lithium or lead-acid Battery?  

We could suggest most suitable motor accordingly, thank you for your cooperation. 

PS. To calculate the speed, v(km/h)=n(r/min)*2rπ(m)*60/1000,   n=load RPM, r=tire radius.

For speed less than 100KPH, consider the Windage Resistance & Rolling resistance.

the load RPM is appr 0.9 * no-load RPM. v(km/h)=0.9*n(r/min)*2rπ(m)*60/1000    

For over 100KPH,  V=0.85*RPM*2rπ*60/1000   


Electric Bike Motor Conversion Kits List

After confirming the motor, we could try to offer suitable motor kits. 

e.g. Motor ControllerWheel RIM, charger, speedometer, throttle, brake, DC-DC converter, etc.

PS. So far, the battery is not avaiable.


QS Motor V1/V2/V3 Type Motor

There are three types, Normal/V1 type (low cost), Export/V2 type (Cost-effective) and Extra/V3 type (Best Performance).

1. Difference between V1 & V2

Holder: Iron(V1), Aluminum (V2)

Hall: One hall with Normal connector(V1), Two halls with Waterproof connector(V2)

Stator: V2 have a stronger configuration, more cooper, thicker section surface, energy saving in usage.

Magnetic Steel Grade: V2 ≥ V1 

Efficiency:  84~87%(V1) 86~88%(V2)

In short, normal type is standard configuration, while export type is high configuration.The price differs because of the cost of raw materials.

2. Difference between V2 & V3

 The raw materials are alike, main difference in inner construction.

For V3 (16 Pole Pairs):  stronger configuration than V2, wider lamination, 
more cooper wire /thicker Cross-sectional area section, bear more current 
in usage. Higher torque at same current, lower temperature rise, more stable in high current.
Magentic Steel: V3 is wider and thicker. 
Efficiency:  86~88%(V2) 88~92%(V3); Thus, V3 have best performance.

PS. for the same V1 steel/iron stator motors, QS Motor performance better on lifetime & stability becasue of good raw material. So the cost is more than normal hub motor in the market.

E.g. 1. Choose C&U bearing which is motorcycle standard, more quiet when riding.

       2. High Coil space factor, better efficiency.

       3. Silicon steel sheet 0.35mm instead of 0.5mm, less current consumption & low temp rise.

       4. Insulation varnish outside of varnished wire, max 180 ℃ than normal 120 ℃. 

       5. Better magnet, demagnetizing less than 1% than normal 3%.  


QS Motor Steel Seal 
We could laser print it on side cover or edge of side cover.
For V3 type motors(e.g. WP20040X140607 7355)
WP= V3 type 200=2000W, 300=3000W
40 means winding X means 32 pieces magnetic steel
140607 means producting date, 07th, June, 2014. 7355, is producing serial number

For V2 type motors(e.g. QSMOTOR 48V3000W 140720 604329)
48V3000W=48V 3000W 140720 means producing date, 20th, July, 2014.
60 means rated speed, 60km/h. 4329 is producing serial number.
P.S.: We define power base on rated output power, rather than peak output power.


How to make the order

·Before-sale,  please advise which motor do you prefer, and advise above expected configuration of EV if possible.

After confirming motor, we could also advise suitable motor kits (e.g. controller).

We suggest to make the payment online, e.g. QS Motor Shop on alibaba;

As it's much convenient to make payment by credit card, easier to follow up & tracking the order.

For delivery cost, please contact with us if it's not reasonable.

We will modify it after place the order on-line (before payment).

When place the order online, please leave the message about the KV and your E-mail address.

Meanwhile, you could place the order offline, we will make PI accordingly (latest price & accurate delivery cost).

·In-sale,  we will informe you once received the payment to start the order & ETD.

Before delivery, we will send some pictures for reference.

·After-sale,  Once got the tracking number, will informed you immediately.  

Manual and software will be sent accordingly, also we will email you after the package delivered.


Payment Term

For Sample,
Generally, we perefer Bank transfer/Wire Transfer/TT 100% in advance (Details of Charges:SHA)
Meanwhile, for less than USD750.0, Money Gram,Western Union, Paypal, Alipay is acceptable.

For Paypal, there will be extra cost for transaction fee: Total cost*4.4%+0.3, withdraw fee: USD 35.0 (we bear USD 35.0).

For Alipay (online),there will be extra cost for transaction fee: Total cost*5.0% (Online quotation already include the cost).

PS. AChina supervision bureau published some new strictly policy in the new year, all payment should go through bank transfer, the customs declare/clearance value should keep the same as the invoice. 

Our company financial rules updated accordingly, the order have to be more orthonormal, only when for really small amount, like USD30 for small kits, other payment term are acceptable. Thank you for your understanding in advance.

For Mass Production, 30% T/T in advance + 70% T/T the balance before shipment.



Produce Time

For normal motors, e.g. e-scooter motor, e-motorcycle, it takes 12-14 business days (6 business per week).
For customzide motor & single shaft motor, it takes 16-18 business days.
In busy season,  the order might be postponed. For mass production, the produce time will be increased accordingly.
PS. For the 3000W 205 50H V3 spoke hub motor, there are some 9.0kV & 11.4kV motors in store.

Standard export packing 1. polyfoam + carton box (for sample) 2. Or according to customer's requirements


Life Time of QS Motor & Warranty of Sample
The Life Time of motor depends on usage.
For general usage, it's about 3-5 years, and it could be 5-7 years if it work in good condition.
For testing and abusing usage, the lifetime will decrease accordingly.
E.g., For 3kW V2/V3 motor, the peak power could be 6kW (2 times of rated power).
Situation 1:
We suggest peak 70-80A battery current for general usage (72V). It's most stable configuration & longest life time.Some EV enthusiast adjust it to be 150A, the output power is far more than 6kW peak. QS Motor could also work,which might not as stable as former situation. For a long time in high current/power, the motor might over heat & even burnt.We strongly suggest to install Thermic Probe (e.g. KTY 83/122), so that controller will protect motor due to the temp inside of motor.
Situation 2:
The peak speed of 1pc 3kW motor is 80KPH in 72V(for e-scooter).Some EV enthusiast adjust it to be 96V, the max speed might be 100KPH, the continuous output power is far more than 3kW rated (maybe equal to 5-6kW).QS Motor could also work, which might not as stable as it in 72V. We call it over voltage/abusing usage, the life time might be shorter, and V3 will work better than V2. 


Warranty period: one year and three months (sincethe date of manufacture) or after riding 15000KM.
For Sample, If it's destructive test/abusing usage due to test purpose, we could not do aftersale issue for free.

If there is some damage during your test, which we could repair. 
After checking your video or pictures, we could deliver some motor parts (e.g. hall sensor) for maintenance.
Also, you could deliver them back to our factory(I'm afraid that you have to bear delivery fee, both way), 
We will make maintenance as possible as we could. For repair fee, we could bear the cost for 1 year. 



Firstly, thank you for your support on QS Motor.
If you tested QS Motor, and interest to be the dealer for better price & service.
Meanwhile, able to do some manitenance of hub motor (e.g. change hall sensors).
Welcome to be QS Motor Dealer.
For QS Motor, there are different grade of dealer as follow.
·Potential Distributors, 
No MOQ limited, annual order above USD 10000.0 (seats limited).
For potential distributors, the price will be much cheaper which base on the Dealer Quotation Regulartion (e.g. offer 20-29pcs quotation for < 20pcs, even for sample). 
We don’t have to sign the dealer contract, the setas limited (5 customers for each saler).
Moreover, we support wholesale, if your customer/friend need motors, we could send the motor from our warehouse & do transaction with you. In this way, you could help your friend to save money.
Validity: 1 Year since 1st order with new price.
1.Better price on Motor & Other Kits we could offer
2.If deliver some motors together by express, air cargo or sea shippment, the delivery cost per motor will be much less than 1pc by express. In this way, you will have better price than us for local market (consider the delivery cost). 
· Official Dealer
The quotation will be much better base on different MOQ & annual quantity, refer to the Dealer Quotation Regulartion for details.
·MOQ 15-29pcs, annual 100pcs
·MOQ 30-49pcs, annual 120pcs
·MOQ 50pcs, annual above 120pcs
·MOQ 50pcs, annual above 500pcs.
Validity: 1 Year
1.Official dealer have all right of the Potential Distributors.  
2.Dealer could leave some motors in our warehouse, if their customer need samples, we could send from our warehouse.
Please don't hestitate to contact with us if any interest!


We're looking forward to cooperate with dealer throughout the word.
Company Information


QS Motor Manufacture

Certification:Business License, Patent Certificatie, ISO9001 Certificate,CCC Certificate, CE Certificate, Brand Certificate.




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