Emax ES9251 II Submicro Servo - 0.9Kg.cm 0.08s 3.8g 8mm

The Emax ES9251 II Submicro Servo is a good ultralight servo that is ideal for small models weighting up to 400g. It weighs only 3.8g (see photo) yet has a reasonable 0.9Kg.cm of torque. Unlike most servos in this weight category it has an acceptable dead band, without too much slop in the geartrain.

Despite the minimum specified voltage of 4.0V this servo is often used successfully on a 1S LiPo.

Emax ES9251 II Submicro Servo Specifications
Body dimensions	18.5 mm wide x 8.3 mm thick x 15.3 mm high	0.73" wide x 0.33" thick x 0.60" high
Max dimensions	25.4 mm wide x 8.3 mm thick x 21.0 mm high	1.00" wide x 0.33" thick x 0.83" high
Stall torque (4V)	0.66 Kg.cm	9 oz.in
Stall torque (4.8V)	0.8 Kg.cm	11 oz.in
Stall torque (5.5V)	0.92 Kg.cm	13 oz.in
Weight	3.8 g	0.13 oz
Lead length	18 cm	7.1 in
Operating speed (4V)	0.11 sec/60°
Operating speed (4.8V)	0.09 sec/60°
Operating speed (5.5V)	0.08 sec/60°
Operating voltage	4V to 5.5V
Operating temperature	°C
Bearings	Plain
Gear material	Nylon
Case material	Nylon
Motor type	Corless
Working frequency	Hz
Dead band/resolution	µs
Pulse width for ± 60º	µs
Digital	Yes
Programmable	No
Position feedback	Potentiometer
Supplied accessories	4 servo output arms, 2 arm retaining screw, 3 mounting screws
Optional accessories