This is the Hitec HSB-9475SH Multi-Purpose Brushless Steel Gear Digital High Voltage Servo.
Pro level hobbyists demand the power and precision found in the Hitec triple threat HSB-94XX servos. Each one is designed with durable steel gears and impressive Neu brushless motors with the HSB-9475SH delivering multi-purpose performance.
Power Efficient Brushless Motor Controller: Energy efficiency is a common interest for all modelers. The HSB-9XXX Series uses the latest control circuit technology including a regenerative braking circuit which puts power back into the battery as the motor slows. This feature, combined with ultralow current draw under sustained loads, allows Hitec brushless servos to consume 1/5 the power of most other brushless servos on the market today.
Programmable 12 Bit Digital Circuit: Using the DPC-10 PC interface and downloadable software, users can program a variety of features in the HSB-9XXX Series including: Fail Safe On/Off and Position, direction, EPA, Speed (Slower), dead Band, and Soft Start.
Custom NeuMotor: Designed by Steve Neu exclusively for the HSB-9XXX Series, these high performance, brushless motors provide longstanding durability and performance.
Constant Torque Output: Thanks to revolutionary circuit and motor designs, the HSB-9XXX Series maintain their speed in a more consistent manner, regardless of load.
Hybrid MPD 1st Gear: Hitecs unique ultra-durable Metal/Plastic/duralumin hybrid first gear prevents inadvertent electrical noise from affecting other components within your aircraft or vehicle.
Industry-Leading Titanium Gear Train: Hitec was the first manufacturer to utilize low wear Titanium gears in their servos and continue to be the leader in Titanium gear technology.
25-Tooth Standard Spline: Hitec Brushless servos utilize a standard 25 tooth output spline for maximum compatibility with the large variety of aftermarket horns available on the market.
Specifications:
Speed @ 6.0V: 0.13sec/60deg
Speed @ 7.4V: 0.10sec/60deg
Torque @ 6.0V: 268 oz-in (19.4kg-cm)
Torque @ 7.4V: 269 oz-in (19.4kg-cm)
Dimensions: 40x20x37mm
Gear: Steel
Output Shaft: 25T Spline
Applications: 1/8 scale Buggy/Truggy, Large Planes
Weight: 62g
Product Notice Regarding Hitec Brushless Servos with Certain RC Devices: While compatible with most radio control devices, the regenerative braking feature of the HSB-9XXX series servos may cause a problem if the device cannot accept a backflow of current. The types of devices that cannot accept this backflow are: Voltage Regulators, Power Safe Receivers and certain BEC circuits whether stand alone or integrated within an Electronic Speed Control. Check with the manufacturer or the Hitec website for a list of compatible models. If your device cannot accept a current backflow, then you must install a PAD (Power Absorbing Device).