Feetech SM80BL

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Technical Specifications

Last Updated: 2026-10-24

Identity
Brand
Product Number	SM-80BL-C001
Category	Hobby
Performance
Torque	12.0V1,111.20 oz-in
Speed	12.0V0.16 sec/60°
Running Current	12.0V0.280 A
Stall Current	≤5.9 ABottom 10%
Physical
Weight	3.44 ozBelow Average
Dimensions	L 1.831 in W 1.122 in H 1.339 in
Case Material	Aluminum
Drivetrain
Motor Type	Brushless
Gears	Steel
Gear Spline/Teeth	25 T
Rotation Mode	Multi-turn
Rotation/Support	Single Bearing
Backlash	0.500°
Control & Signal
Modulation	Digital
Rotational Range	360°
Angle Sensor	Magnetic Encoder
Control System	RS485
Electrical & Environment
Operating Voltage	9–12.6 V
Temperature	-20–80 °C
Certification	CE \| ROHS
Idle Current	0.045 A
Connectivity
Connector	5264-4P
Wire Length	400 mm
Origin
Country of Origin	China

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*Based on known specs.

Class Comparison

Weight	Below Average Lighter than 35% of 145 Digital Large servos
Stall Current	Bottom 10% Lower draw than 10% of 92 Digital Large servos

Performance Analysis

Shaft Power	12.84 W
Power Density	4.670 W/in³ 3rd-highest power density of 112 Digital Large servos
Torque Density	11.3969 oz-in/g
Torque-to-Volume Ratio	404.14 oz-in/in³
Speed-to-Weight	0.06410 (1/sec·g)
Speed-Torque Trade-off	177.79
Current-per-Torque Ratio	0.0053 A/oz-in
Idle-to-Running Current Ratio	0.161
No-Load vs Stall Current Spread	21.07
Voltage Range Width	3.6 V Wider voltage range than 60% of 124 Digital Large servos
Backlash-to-Range Ratio	0.00139 Tighter backlash than 25% of 25 Digital Large servos