MKS Servo Digital Standard HBL669 (0.03s/60°, 5.7kg.cm)
Ultra high speed 63g HV digital narrowband (760µs) brushless standard servo w. metal gears; input voltage 6.0-8.4V, 2xBB. Ideal for tail rotors of 600 class helicopters, compatible with most of 760µs gyro and flybarless systems. Torque 4.2kg.cm, speed 0.05s/60° at 6.0V, torque 5.1kg.cm, speed 0.04s/60° at 7.4V, torque 5.7kg.cm, speed 0.03s/60° at 8.2V. Aluminium mid case for perfect heat dissipation. Dimensions 40x20x40mm, weight 63g. Non-programmable.

Servo dimensions Standard
Servo type Digital
Programmable No
Thrust at 6.0V [kg·cm] 4.2
Thrust at 7.4V [kg·cm] 5.1
Torque at 8.2 V [kg·cm] 5.7
Speed at 6.0V [s/60st.] 0.05
Speed at 7.4V [s/60st.] 0.05
Speed at 8.2 V [s/60st.] 0.03
Control pulse width in neutral [µs] 760
Frame Rate [Hz] 560
Deadband [ms] 0.0005
Servo gears Metal
Ball bearings 2×
High-voltage Yes
Power supply [V] 6 - 8.4
Length [mm] 40
Width [mm] 20
Height [mm] 40
Weight [g] 63
Intended for Helicopters