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Robbe FS 40
Slim Discontinued

Robbe FS 40

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand Robbe
Product Number 8433
Category Hobby
Discontinued Yes
Performance
Torque
6.0V 27.80 oz-in
4.8V 25.00 oz-in
Speed
6.0V 0.15 sec/60°
4.8V 0.18 sec/60°
Running Current (add)
Stall Current (add)
Physical
Weight 0.32 oz
Dimensions L 0.94 in
W 0.35 in
H 0.94 in
Case Material (add)
Drivetrain
Motor Type (add)
Motor Drive (add)
Gears (add)
Gear Spline/Teeth 25 T estimate
Shaft Size (add)
Rotation Mode (add)
Rotation/Support (add)
Backlash (add)
Control & Signal
Modulation Analog
Direction (add)
Rotational Range (add)
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position (add)
Dead Band (add)
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 4.8–6 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector JR (Universal) estimate
Wire Length (add)
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

Shaft Power 0.26–0.34 W
Torque Density2.7778 oz-in/g
Stronger than 74% of the 39 Robbe servos in the database
Torque-to-Volume Ratio80.84 oz-in/in³
Denser torque than 72% of the 40 Robbe servos in the database
Power Density1.108 W/in³
More power-dense than 43% of the 54 Robbe servos in the database
Speed-to-Weight0.61728 (1/sec·g)
Faster than 55% of the 39 Robbe servos in the database
Speed-Torque Trade-off4.50
Better balanced than 41% of the 40 Robbe servos in the database
Torque Gain per Volt9.33%/V
More voltage-responsive (torque) than 17% of the 31 Robbe servos in the database
Speed Gain per Volt16.68%/V
More voltage-responsive (speed) than 40% of the 31 Robbe servos in the database
Voltage Range Width1.2 V
Wider voltage range than 35% of the 49 Robbe servos in the database

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