This is the Hitec High Votage D645MW High Torque Metal Gear Servo. The metal D-645MW is part of Hitec's D-Series servo line. All Hitec D-Series servos have been designed using Hitec's redesigned, cutting edge, custom engineering. Combining industry leading high-resolution, state-of-the-art ultra-response technology with a 32-bit MCU and 12-bit ADC for unprecedented programmability and flexibility, these servos deliver significantly smoother movement. The speedy, powerful line operates on a wide 4.8 ~ 8.4 voltage range, allowing use with any common battery chemistry without the need for adapters or regulators. Featuring Hitec’s industry standard 25-tooth output spline with 3mm hex screw, each D-Series servo brings monster performance never known before in the market.

Features:
Programmable Functions:
Specifications:
Operating Voltage Range (Volts DC): 4.8V - 8.4V
Speed/Torque Value Voltages (Volts DC): 4.8V ~ 6.0V ~ 7.4V
Speed (Second @ 60°): 0.28 ~ 0.20 ~ 0.17
Maximum Torque Range oz./in.: 115 ~ 158 ~ 180
Maximum Torque Range kg./cm.: 8.3 ~ 11.3 ~ 12.9
Current Draw at Idle: 30 mA
No Load Operating Current Draw: 500 mA
Stall Current Draw: 2,650 mA
Dead Band Width: 2 µs
Dimensions (Inches): 1.59 x 0.77 x 1.48
Dimensions (Metric): 40.6 x 19.8 x 37.8
Weight (Ounces): 2.11
Weight (Gram): 57.0
Circuit Type: 32bit Programable Digital
Motor Type: 3 Pole Metal Brush Ferrite
Gear Material: Metal
Bearing Type: Dual Ball Bearing
Output Shaft (type / Ømm): H25T
Case Material: Plastic
Dust/Water Resistance: N/A
Connector Gauge (AWG)/Strand Count: 22/60

Accessories:
Limited Warranty:
Hitec Servo Warranty: Each Hitec servo is backed by a limited two-year warranty from the date of purchase. Hitec RCD USA, INC. shall REPAIR OR REPLACE, at Hitec RCD, INC., defective equipment covered by this warranty, otherwise the purchaser and/or consumer is responsible for any charges for the repair or replacement of the product.