QS 138 4000W 90h 7500W Air Cooled MID Drive Motor Max Continous 72V 100kph 428 Sprocket Adapter

• After-sales Service: Yes
• Warranty: 15 Months
• Type: Motorcycle Engine
• Certification: CE
• Material: Alloy
• Usage: Car, Electric Bicycle, Electric Motorcycle
• Model NO.: QS-138 4KW
• Construction: Permanent Magnet
• Transport Package: Carton with Foam
• Specification: 4000w
• Trademark: QS
• Origin: China
• HS Code: 8711600010
• Production Capacity: 500000pieces/Year

Product Description

QS 138 90H 4KW PMSM MID DRIVE MOTOR

 

For 138 4000W mid drive motor , it could be used for electric light motorcycle, which could be 72V 100KPH.

What's more, we provide chain gear adapters as default.
 

 
 

Motor Type	PMSM Inner Rotor Motor	Motor design	single axle
Brand	QS Motor, QS MOTOR	Matched wheel	17 inch (as default)
Magnet Height	90mm,5 pole pairs	Rated power	4000w(Max continue 7500w)
Peak Power	13.5kw	Rated Torque	32N.m
Rated Voltage	72v	Speed	4800RPM
With flux weakening	7000RPM	Max Torque	150N.M
Cooling method	Air cooling	Max Efficiency	93%
Rated current	60A	Max bus current	200A
Thermic Probe	KTY83/122(as default)	Working temperature	70-120ºC,peak 150ºC
Phase wire	20mm² cross section	Waterproof grade	IP67
Color	Black	N.W/G.W	10.8kgs/11.5kgs
Package Dimension	34cm*34cm*33cm	Hall sensor	Single hall plate with waterproof connectors

 

Axle matched with belt(as default). 428 14T sprocket with adapter is available.
 

 2. Dimension Drawing:

3. Test report