The BF-PR Performance Series Standard size, full metal, digital OMG-ST-40BF servo is a powerful, accurate, ultra torque digital servo with a full metal aluminum case, long wear Ti and 304 Stainless gears, a precision brushless motor and improved electronics, incorporating RCOMG's legendary quality. It can be capable for 4.8 to 8.4 volt operation, with a maximum ouptut of 556oz/in torque The OMG-ST-40BF-PR takes you to a whole new galaxy of performance. RC OMG provide legendary digital precision with higher torque and faster speed servos. Specification Operating Voltage Range: 6.0-8.4Volts DC Bushing or Bearing: Bearing Bearing Type: Dual Ball Bearings Speed/Torque at: 7.4v - 0.078/60° 36kgf.cm (500Oz/in) 8.4v - 0.065/60° 40kgf.cm (556Oz/in) Maximum Travel: 150° Size in Inches: 1.57 x 0.79 x 1.46 Size in Millimeters: 40 x 20 x 37.2 Weight oz: 2.79 Weight g: 79 Motor Type: Brushless motor Control System: +Pulse Width Control 1500µsec Neutral Required Pulse: 3-5 Volt Peak to Peak Square Wave Operating Temperature Range(°F): 14° - 122° Operating Temperature Range(°F): -10° - +50° Idle Current (@6.0V/7.4V/8.4V): 4mA/5mA No Load Running Current (6.0V/7.4V/8.4V): 180mA/220mA Stall Current (6.0V/7.4V/8.4V): 3800mA/4700mA Dead Band Width: 2µs Potentiometer Type: Rotating(Max.220°) Connector Wire Length: 11.8 in. / 300 mm. OMG wire Connector Wire Gauge: 22 AWG Connector Type: JR Gear Type: Stainless SteelGears Frequency: 330Hz Shaft: 5.90mm 25T Warranty This Brushless servo is warranted for three years from the date of purchase to be free from manufacturing or component defects. During the warranty period RC OMG will repair or replace (at itsdiscretion) any defective products. Please keep your original order receipt as proof of the date of purchase. This warranty does not cover abuse, neglect, or damage due to incorrect wiring, over voltage, overloading, misuse, crash damage, improper installation or damages caused by alteration by unauthorized persons. RC OMG Part No: RCOMG -ST-40-BF-PR