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HobbyPark HD0521MG
Micro

HobbyPark HD0521MG

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-10
Identity
Brand HobbyPark
Product Number (add)
Category Hobby
Performance
Torque
8.4V 81.94 oz-in
7.4V 76.38 oz-in
6.0V 62.49 oz-in
5.0V 52.77 oz-in
Speed
8.4V 0.07 sec/60°
7.4V 0.08 sec/60°
6.0V 0.09 sec/60°
5.0V 0.11 sec/60°
Running Current
8.4V 0.063 A
7.4V 0.056 A
6.0V 0.053 A
5.0V 0.046 A
Stall Current 1–1.6 A
Physical
Weight 0.42 oz
Dimensions L 0.94 in
W 0.47 in
H 1.05 in
Case Material Plastic
Drivetrain
Motor Type Coreless
Motor Drive (add)
Gears Metal
Gear Spline/Teeth 25 T
Shaft Size 4.9 mm
Rotation Mode (add)
Rotation/Support Single Bearing
Backlash (add)
Control & Signal
Modulation Digital
Direction (add)
Rotational Range 180°
Mechanical Limit (add)
Pulse Cycle 333 ms
Pulse Width 500-2500 µs
Neutral Position 1520 µs
Dead Band 2 µs
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable Yes
Signal Voltage (add)
Electrical & Environment
Operating Voltage 4.8–8.4 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating Waterproof
Certification (add)
Idle Current (add)
Connectivity
Connector JR (Universal)
Wire Length 245 mm
Origin
Country of Origin (add)

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.

Performance Analysis

Torque Density4.3975 oz-in/g
Torque-to-Volume Ratio113.76 oz-in/in³
Speed-to-Weight0.75758 (1/sec·g)
Speed-Torque Trade-off5.80
Current-per-Torque Ratio0.0303 A/oz-in
No-Load vs Stall Current Spread34.78
Voltage Range Width3.6 V
Wider voltage range than 77% of the 405 Digital Micro servos in the database
Dead-Band-to-Pulse-Width Ratio0.0010
Finer dead band than 45% of the 117 Digital Micro servos in the database

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