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Hitec HS-322HD
Standard

Hitec HS-322HD

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-09-14
Identity
Brand Hitec
Product Number 33322S
Category Hobby
Performance
Torque
6.0V 51.00 oz-in
4.8V 42.00 oz-in Below Average
Speed
6.0V 0.15 sec/60°
4.8V 0.19 sec/60° Average
Running Current
6.0V 0.180 A
4.8V 0.160 A Above Average
Stall Current 0.7–0.8 ATop 10%
Physical
Weight 1.52 ozAbove Average
Dimensions L 1.57 in
W 0.78 in
H 1.43 in
Case Material Plastic
Drivetrain
Motor Type 3-pole
Gears Plastic
Gear Spline/Teeth 24 T
Shaft Size 6.0 mm
Rotation Mode Positional
Rotation/Support Bushing
Backlash 0.500°
Control & Signal
Modulation Analog
Direction Clockwise
Rotational Range 120°
Pulse Cycle 20 ms
Pulse Width 900-2100 µs
Neutral Position 1500 µs
Dead Band 5 µs
Refresh Rate 50 Hz
Angle Sensor Potentiometer
Control System PWM
Programmable No
Signal Voltage 3-5V
Electrical & Environment
Operating Voltage 4.8–6 V
Temperature -20–60 °C
Water Rating IP40
Idle Current 0.008 A
Connectivity
Connector S
Wire Length 300 mm

Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Class Comparison

TorqueBelow Average
Stronger than 14% of 198 Analog Standard servos at 4.8V
SpeedAverage
Faster than 43% of 195 Analog Standard servos at 4.8V
WeightAbove Average
Lighter than 73% of 448 Analog Standard servos
Running CurrentAbove Average
Lower draw than 79% of 49 Analog Standard servos at 4.8V
Stall CurrentTop 10%
Lower draw than 94% of 63 Analog Standard servos

Performance Analysis

Shaft Power 0.41–0.63 W
Power Density0.359 W/in³
More power-dense than 24% of 433 Analog Standard servos
Torque Density0.9767 oz-in/g
Stronger than 13% of 198 Analog Standard servos
Torque-to-Volume Ratio23.98 oz-in/in³
Denser torque than 17% of 198 Analog Standard servos
Speed-to-Weight0.12240 (1/sec·g)
Faster than 65% of 195 Analog Standard servos
Speed-Torque Trade-off7.98
Better balanced than 13% of 195 Analog Standard servos
Current-per-Torque Ratio0.0190 A/oz-in
More efficient than 45% of 54 Analog Standard servos
Idle-to-Running Current Ratio0.050
Lower idle draw than 46% of 38 Analog Standard servos
No-Load vs Stall Current Spread5.00
Narrower current spread than 85% of 35 Analog Standard servos
Torque Gain per Volt17.86%/V
More voltage-responsive (torque) than 66% of 156 Analog Standard servos
Speed Gain per Volt22.22%/V
More voltage-responsive (speed) than 86% of 156 Analog Standard servos
Voltage Range Width1.2 V
Wider voltage range than 61% of 240 Analog Standard servos
Backlash-to-Range Ratio0.00417
Tighter backlash than 43% of 43 Hitec servos
Dead-Band-to-Pulse-Width Ratio0.0042
Finer dead band than 51% of 56 Analog Standard servos

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Reviews (7)

Includes 4 reviews aggregated from around the web.

Users call it dependable and long-lived and recommend it as a standard sport servo for 40-65 inch planes and basic robots. They note it is analog and slow, so it is not suited to demanding loads.

  • alexM

    March 8, 2016

    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.

  • JBruce

    July 8, 2010

    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.

  • jason.hodge

    November 7, 2009

    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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