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Mini Discontinued

JR 3321

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand JR
Category Hobby
Discontinued Yes
Performance
Torque
4.8V59.80 oz-in
Speed
4.8V0.36 sec/60°
Physical
Weight 0.95 ozBelow Average
Dimensions L 1.30 in
W 0.58 in
H 1.30 in
Drivetrain
Motor Type Coreless
Gears Plastic
Gear Spline/Teeth 23 T estimate
Rotation/Support Dual Bearings
Control & Signal
Modulation Analog
Connectivity
Connector JR (Universal)

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

WeightBelow Average
Lighter than 18% of 165 Analog Mini servos

Performance Analysis

Shaft Power 0.31 W
Power Density0.313 W/in³
More power-dense than 2% of 163 Analog Mini servos
Torque Density2.2231 oz-in/g
Torque-to-Volume Ratio61.01 oz-in/in³
Speed-to-Weight0.10326 (1/sec·g)
Speed-Torque Trade-off21.52

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