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Feetech SM45BL
Robotics

Feetech SM45BL

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-22
Identity
Brand Feetech
Product Number SM-45BL-C002
Category Robotics
Performance
Torque
24.0V625.05 oz-in
Speed
24.0V 0.14 sec/60°
12.0V 0.29 sec/60°
Running Current
24.0V 0.160 A
12.0V 0.120 A
Stall Current 1.3–2.3 AAverage
Physical
Weight 3.53 ozBelow Average
Shape Boxed
Dimensions L 1.831 in
W 1.122 in
H 1.339 in
Case Material Aluminum
Drivetrain
Motor Type Brushless
Gears Steel
Gear Ratio 353:1
Gear Spline/Teeth 25 T
Rotation Mode Multi-turn
Rotation/Support Dual Bearings
Backlash 0.500°
Control & Signal
Modulation Digital
Rotational Range 360°
Angle Sensor Magnetic Encoder
Control System RS485
Programmable Yes
Electrical & Environment
Operating Voltage 9–24 V
Temperature -20–80 °C
Water Rating IP54
Certification RoHS
Connectivity
Baud Rate 38.4 Kbps–1 Mbps
Origin
Country of Origin China

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

WeightBelow Average
Lighter than 33% of 145 Digital Large servos
Stall CurrentAverage
Lower draw than 57% of 92 Digital Large servos

Performance Analysis

Shaft Power 8.26 W
Power Density3.002 W/in³
More power-dense than 91% of 112 Digital Large servos
Torque Density6.2505 oz-in/g
Torque-to-Volume Ratio227.33 oz-in/in³
Speed-to-Weight0.03509 (1/sec·g)
Speed-Torque Trade-off178.16
Current-per-Torque Ratio0.0037 A/oz-in
No-Load vs Stall Current Spread19.17
Voltage Range Width15.0 V
3rd-highest voltage range width of 124 Digital Large servos
Backlash-to-Range Ratio0.00139
Tighter backlash than 33% of 25 Digital Large servos

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