120N.m Powerful 48V 750W 8fun/bafang BBS02 Mid/Center Motor Electric bicycles conversion kits for electrc bike

Design Brushless

Wattage > 400w

Motor Type middle driven motor

Voltage 48V

Rated voltage 48V

Rated power 750W

Rated efficiency >78%

Chain wheel type 48T

Max speed 110--130rpm

Torque 120N.m

Reduction ration 1:22

Weight 4.3Kg

Color Black

Limited current of controller 25A

The Advantage of the mid kits: *****The mid kits is free wheel requested,can be mounted on any standard bike/trike that has 68mm(2.68")/73mm(2.87") bottom bracket! 1.The kits can be installed on standard nomal bike frame easily,no need to change the frame; 2.High starting torque,Max torque is above 120N.m,good performance on climbing; 3.Double cultch is used on drive unit,more safty; 4.High efficiency,low consumption,low noise,long travel distance. Parameters 1) Driver unit 2)Electric control system Driver:Dc brushless controller Assistance Meter:LCD Speed sensor:One signal(four magnets) Assistance Sensor:Inside Assistance Control Mode: Speed control,Power Control, Proportional Control. Diagram of Electrical parts connection Installation 1.Open the package and take out drive unit accessories,And check out the specification whether it is correct. 2.Fix the chain wheel on drive unit with 5 pcs screws M5*10,then fix chain cover on chain wheel wiht 5 pcs screws ST3.9 3.Fix the drive unit axle tube on frame bottom bracket. 4.The surface with teeth of fixing plate inside,then fix the plate on drive unit with 2 pcs M6*10 5.Hold the drive unit near to bicycle fork,force less than 5Kg,tight 1st nut M33 onto axle tube with force:30-40N.m 6.Fix 2nd nut M33 onto axle tube,tightening force:30-40N.m 7.Fix the left crank on the bike with M8 inner hexagon screw.Tightening force:35-40N.m 8.Fix the right crank on the bike with M8 inner hexagon screw.Tightening force 35-40N.m 9.Connect all cables for battery,display,speed detecting sensor and so on. 10.If you have any problem in stalling,you can leave me message,i will help you! kits list: 1.central motor(controller,PAS inside) 2.LCD dispaly 3.Crank 4.brake (including the power-off function) 5.out speed sensor 6.Throttle 7.one for four connection 8.Accessories

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