5PCS 0408 4mm*8mm Mini Coreless Motor DC 15V-42V 37V 65000RPM high Speed Micro Tiny Hollow Cup Engine DIY RC Drone Toy Model _x000D_ _x000D_ _x000D_ Specification: _x000D_ _x000D_ 4mm*8mm motor, very mini, high speed, light weight, low noise, _x000D_ making small model toys and other small technology small production The model is a good choice! _x000D_ _x000D_ _x000D_ Motor outer diameter: 4MM _x000D_ Motor length: 8MM _x000D_ Motor shaft diameter: 0.7 MM _x000D_ Length of output shaft: 3 MM _x000D_ Cable length: about 28MM _x000D_ Weight: about 0.45 g _x000D_ _x000D_ Voltage: DC1.5V _x000D_ No-load current: 25MA _x000D_ No-load speed: 30000 RPM _x000D_ _x000D_ Voltage: DC3V _x000D_ No-load current: 50 MA _x000D_ No-load speed: 53000 RPM _x000D_ _x000D_ Voltage: DC3.7V _x000D_ No-load current: 60 MA _x000D_ No-load speed: 65000 RPM _x000D_ _x000D_ Note: This is a subminiature hollow cup motor. Although it is also made of NdFeB high strength magnet, _x000D_ its torque is very small. After all, its weight is less than 0.5g. _x000D_ The force of such a small motor must be small, and its torque is small. _x000D_ We say it is no-load speed. Therefore, the load speed must also be reduced. _x000D_ It is generally used in precision electrical appliances that require small volume but do not need large torque. _x000D_ _x000D_ Package Include: _x000D_ _x000D_ Motor x 5PCS _x000D_ _x000D_ _x000D_ _x000D_