Product description:
The metal D-645MW is part of our D-Series dynamo servo line. All Hitec D-Series servos have been designed using our brand new, 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.

Specifications:
Special Features:
- Wide Voltage Range: DC 4.8-8.4V
- 2 cell Li-Pi (6 cell Ni-MH) compatible
- Programmable digital amplifier with MOSFET drive
- Gold plated connector
- Narrow dead band width & high standing torque
- Applied H25T horn gear
- 3mm horn screw (‘+’ & HEX socket screw included)
- 32bit MCU / 12bit ADC

Dimensions 1.59” x 0.77” x 1.48” (40.6 x 19.8 x 37.8mm)
Product Weight 2.11oz (60g)
Output Shaft Style 25 tooth (H25T) spline
Voltage Range 4.8V - 8.4V
No-Load Speed (4.8V) 0.28 sec/60°
No-Load Speed (6.0V) 0.20 sec/60°
No-Load Speed (7.4V) 0.17 sec/60°
Stall Torque (4.8V) 115.3 oz/in. (8.3 kg.cm)
Stall Torque (6.0V) 157.8 oz/in. (11.3 kg.cm)
Stall Torque (7.4V) 180.1 oz/in. (12.9 kg.cm)
Max PWM Signal Range (Standard) 750-2250μsec
Travel per µs (out of box) .080°/μsec
Max Travel (out of box) 120°
Pulse Amplitude 3-5V
Operating Temperature -20°C to +60°C
Continuous Rotation Modifiable Yes
Direction w/ Increasing PWM Signal Clockwise
Deadband Width 2µs
Motor Type 3 Pole Ferrite
Internal Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearings
Gear Type Straight Cut Spur
Gear Material Metal
Wire Length 11.81" (300mm)