Hitec HS-322HD - Standard Heavy Duty Servo


Modulation: Analog
Torque: 4.8V: 42.00 oz-in (3.02 kg-cm)
6.0V: 51.00 oz-in (3.67 kg-cm)
Speed: 4.8V: 0.19 sec/60°
6.0V: 0.15 sec/60°
Weight: 1.51 oz (42.8 g)
Dimensions: Length:1.57 in (39.9 mm)
Width:0.78 in (19.8 mm)
Height:1.43 in (36.3 mm)
Motor Type: 3-pole
Gear Type: Plastic
Rotation/Support: Bushing
Rotational Range: (add)
Pulse Cycle: 20 ms
Pulse Width: 900-2100 µs
Connector Type: (add)
Hitec HS-322HD
Brand: Hitec
Product Number: 33322S
Typical Price: 9.95 USD
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Reviews of Hitec HS-322HD (3)

  • Rating:

    Application(s): Light robotics

    Comments: Allegedly 'heavy duty', with 'Karbonite' gears -- BUT both descriptors are misleading. Has 2 Karbonite and 2 nylon gears and in light use they both break easily. It's not a heavy duty servo by any means.

    With a full range of input pulse widths, 544-2400 uS., its rotational range is ~190 deg. With more usual RC input range of 900-2100 uS. it will output ~155 deg. of rotation.

  • Rating:

    Application(s): used as leg servos in a small hexapod robot, 3 dof per leg.

    Comments: I would absolutely not recommend these for robotic applications or anything that experiences high mechanical shock. The resin gears do not stand up to the stress of walking impact. I've had 3 of these fail in the last month.

    Great for low stress areas but they cannot handle any shock,
    do not fall for resin gear advertisement.

  • Rating:

    Application(s): 4 Channel R/C Aircraft - 4.8V

    Comments: I had 1, maybe 2 of these brand new servo's fail on my aircraft's maiden flight. All things tested fine on the ground, but one of them, mainly the elevator servo, failed during flight. I had to send all 4 in the plane to Hitec for service. I sent 4 more that I purchased, back to the dealer for upgrade to Futaba 3004's. No more Hitec for me!

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