Power HD D-21HV Servo 21kg 8.4V HV Ultra Premium Digital Servo

Power HD D-21HV Servo 21kg 8.4V HV Ultra Premium Digital Servo

with Metal Gears and Double Bearings

Specifications:
Torque:  17.5 kg-cm (243.0 oz/in) (6.0V); 21.0 kg-cm (291.6 oz/in) (7.4V)
Speed:  0.14sec (6.0V); 0.12sec (7.4V)
Operating Voltage:  6.0 ~ 8.4 V
Weight:  75.0 g (2.64 oz)
Bearing Type:  Double Ball Bearing
Motor Type:  Coreless Motor
Gear Type:  Titanium & Alu
Operating Temperature:  -20~60 centigrade
Working frequency:  1520μs / 333hz
Size:  40.0 x 20.0 x 38.0mm (1.57 x 0.79 x 1.49 in)

Features:
Full aluminum case set
Full titanium shielded aluminum gear set
Up to 8.4 Volts (2s Li-po) supported
Long life coreless motor
Obtain more reliable performance and lower tempreture