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Hitec D645MW Wide Voltage Super Torque Servo

Hitec D645MW Wide Voltage Super Torque Servo

Brand: Hitec

Part No: 2221055

£38.25 RRP £42.50

In Stock: Usually ships same day

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The Hitec D645MW Wide Voltage Super Torque Servo combines smooth, precise control with robust construction. Part of Hitec’s D-Series, it leverages a 32-bit MCU and 12-bit ADC for ultra-responsive operation and extensive programmability. Its wide 4.8–8.4V operating range supports common battery chemistries without external regulators, while metal gears and quality components deliver dependable performance. Part number 2221055.

Built around Hitec’s industry-standard 25-tooth output spline with a 3mm hex screw, the D645MW provides refined movement, impressive holding power, and long service life in a standard-size footprint.

Key Features

  • 32-bit MCU and 12-bit ADC for high-resolution, ultra-response control
  • Wide 4.8–8.4V operating range for flexible power options
  • Metal gear train for durability and smooth operation
  • Programmable digital amplifier with MOSFET drive
  • Long life (1M cycles) indirect potentiometer
  • Narrow dead bandwidth and high standing torque
  • Gold-plated contacts
  • 25-tooth output spline with 3mm hex screw

Tech Specs

  • Servo size: Standard
  • Weight: 57g (2.01oz)
  • Product length: 41mm (1.59in)
  • Product width: 20mm (0.77in)
  • Product height: 38mm (1.48in)
  • Shipping weight: 0.13kg (0.29lbs)

Part of Hitec's D-Series servo range, the metal gear D-645MW features industry leading high-resolution, state-of-the-art ultra-response technology, a 32-bit MCU, and a 12-bit ADC for unprecedented programmability and flexibility. The result is a significantly smoother movement and a 4.8 - 8.4 volt 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 offers true value for money with the promise of durability, quality and a monster performance

Hitec D645MW Wide Voltage Super Torque Servo Key Features:

  • Part of Hitec's D-Series servo range, the metal gear D-645MW features industry leading high-resolution, state-of-the-art ultra-response technology, a 32-bit MCU, and a 12-bit ADC for unprecedented programmability and flexibility. The result is a significantly smoother movement and a 4.8 - 8.4 volt 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 offers true value for money with the promise of durability, quality and a monster performance.

  • Programmable digital amplifier with MOSFET drive
  • Long life (1M cycles) indirect potentiometer
  • Narrow dead bandwidth and high standing torque
  • Gold-plated contacts

Hitec D645MW Wide Voltage Super Torque Servo Tech Specs:

  • Weight: 57g / 2.01oz
  • Shipping Weight: 0.13kg / 0.29lbs
  • Product Height: 38mm / 1.48in
  • Product Width: 20mm / .77in
  • Product Length: 41mm / 1.59in
  • Application: Array
  • Servo Size: Standard


    Key Info:
    • Brand: Hitec
    • Part No: 2221055
    • Barcode: 669962366458
    • Max Voltage: 7.4v+ (LiPo)
    • Gear Material: Metal
    Standard Shipping

    £3.95 to most of the UK

    Express Shipping

    £6.95 to most of the UK

    Worldwide Shipping

    Available at checkout

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    Questions & Answers
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    Will this fit in a HPI Blitz Flux
    David Williams / 10th May 2018

    Yes, standard size so should fit your blitz fine.

    Ben @ Wheelspin Models
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