This is the Airtronics 94780M Metal Gear Digital High Power Servo. The Airtronics 94780M is the highest-torque servo in a standard case on the market today, and it is as fast as many other servos with much lower torque. Inside and out, this servo is built for reliability and performance.
It is perfect for high-torque applications such as steering for 1/8th vehicles, the rudder on larger aerobatic aircraft, all control surfaces for high-power large jets (not the small park flyers, however!), and all control surfaces on 27% or larger scale planes.
All Airtronics servos are manufactured with rugged heavy duty gear trains and feature custom I.C's, Surface Mount Technology (SMT) construction and splined output shafts for accurate control surface movement. Molded neoprene vibration isolators and injected molded servo cases ensure the superior strength and lasting durability that have made Airtronics products a top choice among competitors world wide.
Torque: 361 Oz/In (26.0 Kg/Cm) @ 4.8V , 423 Oz/In (30.5 Kg/Cm) @ 6.0V
Speed: 0.19 Sec/60 Deg @ 4.8V, 0.15 Sec/60 Deg @ 6.0V
Dimensions: 1.6 x 0.83 x 1.5 In (406 x 211 x 381 mm)
Weight: 2.33 Oz (66 g)