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TowerPro SG91R
Mini Discontinued

TowerPro SG91R

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-09-16
Identity
Brand TowerPro
Category Hobby
Discontinued Yes
Performance
Torque
4.8V25.00 oz-inBelow Average
Speed
4.8V0.10 sec/60°Top 10%
Physical
Weight 0.32 ozTop 10%
Dimensions L 0.91 in
W 0.48 in
H 1.14 in
Drivetrain
Gears Plastic
Gear Spline/Teeth 21 T estimate
Rotation/Support Bushing
Control & Signal
Modulation Analog
Dead Band 10 µs
Control System PWM
Programmable No
Electrical & Environment
Operating Voltage 4.8–6 V
Temperature 0–55 °C
Certification RoHS
Connectivity
Connector JR (Universal) estimate

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 80 Analog Mini servos at 4.8V
SpeedTop 10%
Faster than 93% of 81 Analog Mini servos at 4.8V
WeightTop 10%
Lighter than 99% of 165 Analog Mini servos

Performance Analysis

Shaft Power 0.46 W
Power Density0.928 W/in³
More power-dense than 60% of 163 Analog Mini servos
Torque Density2.7778 oz-in/g
Stronger than 92% of 80 Analog Mini servos
Torque-to-Volume Ratio50.21 oz-in/in³
Denser torque than 43% of 80 Analog Mini servos
Speed-to-Weight1.11111 (1/sec·g)
2nd-highest speed-to-weight of 81 Analog Mini servos
Speed-Torque Trade-off2.50
Better balanced than 15% of 80 Analog Mini servos
Voltage Range Width1.2 V
Wider voltage range than 55% of 88 Analog Mini servos

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