Product overview
The FlashHobby BLS4058RP combines a brushless motor, steel gears and digital control in a 40x20x40.50mm body. Its CNC AL6061 aluminum case forms a diamond-cut heat sink shell, with a water-resistant and waterproof enclosure. Dual ball bearings support the output shaft, which carries a 25-tooth spline. The servo weighs 80g±10g without the servo horn and has a 300MM connector wire with a JR plug. Its helical gearing provides low backlash, strong engagement, low noise and smooth operation.
Operating on 6.0 ~ 8.4 Volts DC, the servo delivers 42.0kg-cm/583 oz-in stall torque and 0.17sec/60° speed at 6.0V; 49.0kg-cm/680 oz-in and 0.14sec/60° at 7.4V; and 58.0kg-cm/805 oz-in and 0.12sec/60° at 8.4V. A programmable PWM digital amplifier works with a 32-bit MCU and 14-bit magnetic encoder. Programmable functions cover end points, direction, fail safe, dead band, speed reduction, soft start rate and overload protection, alongside data save/load and program reset. Compatible control modes include Sanwa SSR, NB4 and Futaba.
