Emax BL4020/08 520Rpm/V Outrunner Brushless Motor

EMAX BL4020 Brushless motors with neodymium magnets and rotating case are manufactured using advanced technologies from finest materials. Hardened steel shaft supported by three ball bearings and overall robust but lightweight construction ensure very long lifetime. The unique design of the motors gives extremely high torque allowing to rotate large diameter and pitch propellers without need of a gearbox. The optional radial mount set includes: mounting flange, propeller adaptor, securing collar, and screws.

Features

  • Emax BL4020/08 520Rpm/V Outrunner Brushless Motor

  • Model: BL4020/08

  • No. Of cells: 5-7 Li-Poly

  • RPM/V: 520

  • Max. efficiency: 86%

  • Max. efficiency current: 20- 40A (>78%)

  • Current capacity 41 A/60s

  • Dimensions: 41x20 mm

  • Shaft diameter: 6 mm

  • Weight: 248g/8.75oz

  • Recommended model weight: 2000g-4000g

  • Recommended prop without gearbox: 13X8; 12X8

* BL4020 KV=520 Sample data sheet

Model Voltage Propeller RPM Max Current Max Trust
BL4020 21V 13X8 (Thin) 10130 44A 4650g
BL4020 17V 13X8 (Thin) 8200 28A 3345g
BL4020 22V 12X8 (Thin) 10500 41A 4314g
BL4020 17V 14X7 (Thin) 8600 43A 3607g
Emax BL4020/08 520Rpm/V Outrunner Brushless Motor
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  • Item #: EMAXBL4020/08
Price $52.99
Availability Out-of-Stock