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Robbe FS 550 BB MG
Mini Discontinued

Robbe FS 550 BB MG

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-11-05
Identity
Brand Robbe
Product Number 8522
Category Hobby
Discontinued Yes
Performance
Torque
6.0V 58.30 oz-in
4.8V 48.60 oz-in Average
Speed
6.0V 0.16 sec/60°
4.8V 0.21 sec/60° Bottom 10%
Physical
Weight 0.75 ozAbove Average
Dimensions L 1.18 in
W 0.51 in
H 1.24 in
Drivetrain
Gears Metal
Gear Spline/Teeth 25 T estimate
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Control System PWM
Electrical & Environment
Operating Voltage 4.8–6 V
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

TorqueAverage
Stronger than 37% of 290 Digital Mini servos at 4.8V
SpeedBottom 10%
Faster than 3% of 293 Digital Mini servos at 4.8V
WeightAbove Average
Lighter than 68% of 505 Digital Mini servos

Performance Analysis

Shaft Power 0.43–0.67 W
Power Density0.903 W/in³
More power-dense than 15% of 482 Digital Mini servos
Torque Density2.2925 oz-in/g
Stronger than 48% of 286 Digital Mini servos
Torque-to-Volume Ratio65.13 oz-in/in³
Denser torque than 40% of 288 Digital Mini servos
Speed-to-Weight0.22462 (1/sec·g)
Faster than 17% of 289 Digital Mini servos
Speed-Torque Trade-off10.21
Better balanced than 71% of 288 Digital Mini servos
Torque Gain per Volt16.63%/V
More voltage-responsive (torque) than 51% of 257 Digital Mini servos
Speed Gain per Volt26.05%/V
More voltage-responsive (speed) than 92% of 262 Digital Mini servos
Voltage Range Width1.2 V
Wider voltage range than 29% of 405 Digital Mini servos

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