Futaba BLS551

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*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-09-14

Identity
Brand
Product Number	FUTM0564
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 128.00 oz-in 4.8V 102.00 oz-in
Speed	6.0V 0.10 sec/60° 4.8V 0.13 sec/60°
Physical
Weight	1.55 ozAbove Average
Dimensions	L 1.61 in W 0.79 in H 0.98 in
Drivetrain
Motor Type	Brushless
Gears	Metal
Gear Spline/Teeth	25 T estimate
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Neutral Position	1520 µs
Refresh Rate	200 Hz
Connectivity
Wire Length	200 mm

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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.

Compatible Hardware

Amazon eBay

*Spec is estimated from brand data.

Class Comparison

Weight

Above Average

Lighter than 81% of 251 Digital Low Profile servos

Performance Analysis

Shaft Power	1.45–2.37 W
Power Density	1.899 W/in³ More power-dense than 26% of 215 Digital Low Profile servos
Torque Density	2.3182 oz-in/g
Torque-to-Volume Ratio	81.83 oz-in/in³
Speed-to-Weight	0.17483 (1/sec·g)
Speed-Torque Trade-off	13.26