DESCRIPTION
The FEETECH SM24BL is a 24V brushless serial bus servo designed for AGVs, shuttle systems, mobile robots, robotic mechanisms, and industrial automation applications.
It combines a brushless motor, 12-bit magnetic encoder, 241:1 gear reduction, RS485 communication, and 360° position control in a compact metal housing.
At 24V, the SM24BL provides 6 kg·cm (0.6 N·m) rated torque and up to 24 kg·cm stall torque, with a maximum no-load speed of 120 RPM.
The servo supports position, motor, and stepper operating modes. Protocol options include FEETECH Protocol and Modbus-RTU, depending on the selected version.
Dual RS485 connectors support convenient daisy-chain connections for multi-servo robotic and automation systems.
KEY FEATURES
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24V brushless serial bus servo
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8–26V operating voltage range
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6 kg·cm / 0.6 N·m rated torque at 24V
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24 kg·cm stall torque at 24V
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Up to 120 RPM no-load speed
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360° position control
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12-bit high-precision magnetic encoder
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0.088° position resolution
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241:1 gear reduction
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RS485 communication
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FEETECH Protocol / Modbus-RTU options
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Dual RS485 connectors
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Daisy-chain connection capability
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Position, motor, and stepper control modes
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333 Hz control frequency
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All-metal housing
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Suitable for AGVs, mobile robots, robotics, and automation
SPECIFICATIONS
| Specification | Value |
|---|---|
| Model | SM24BL |
| Product Type | Brushless Serial Bus Servo |
| Motor Type | Brushless Motor |
| Communication | RS485 |
| Protocol | FEETECH Protocol / Modbus-RTU |
| Operating Voltage | 8–26V |
| Typical Voltage | 24V |
| Position Range | 0–360° |
| Position Resolution | 0.088° |
| Encoder | 12-bit Magnetic Encoder |
| Rated Torque | 6 kg·cm / 0.6 N·m @ 24V |
| Stall Torque | 24 kg·cm @ 24V |
| Maximum No-Load Speed | 120 RPM @ 24V |
| Speed | 0.08 sec/60° @ 24V |
| Static Current | 25 mA |
| No-Load Current | 90 mA |
| Stall Current | 1300 mA |
| Gear Ratio | 241:1 |
| Control Frequency | 333 Hz |
| Baud Rate | 38,400–1,000,000 bps |
| Operating Temperature | -40°C to +70°C |
| Control Modes | Position / Motor / Stepper |
| Dimensions | 40 × 28 × 47.8 mm |
| Weight | 89.6 ± 1 g |
| Connector | TJC25020-4P |
| Cable Length | 40 cm |
COMMUNICATION
The SM24BL uses an RS485 serial communication interface and is available with FEETECH Protocol or Modbus-RTU.
Dual RS485 connectors make it easy to connect multiple servos in series for multi-axis robotic systems.
RS485 Interface
| Pin | Definition |
|---|---|
| G | GND |
| V | Power |
| B | RS485 B |
| A | RS485 A |
CONTROL MODES
| Mode | Application |
|---|---|
| Position Mode | Angular positioning and servo control |
| Motor Mode | Continuous rotation applications |
| Stepper Mode | Step-based positioning applications |
DIMENSIONS
| Parameter | Value |
|---|---|
| Length | 40 mm |
| Width | 28 mm |
| Height | 47.8 mm |
| Weight | 89.6 ± 1 g |
PERFORMANCE
| Parameter | Value |
|---|---|
| Rated Torque | 6 kg·cm / 0.6 N·m @ 24V |
| Stall Torque | 24 kg·cm @ 24V |
| Maximum No-Load Speed | 120 RPM |
| No-Load Current | 90 mA |
| Stall Current | 1300 mA |
APPLICATIONS
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AGV systems
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Shuttle systems
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Autonomous mobile robots
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Robot joints
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Robotic mechanisms
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Automated transport systems
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Industrial automation
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Multi-axis robotic systems
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Research robots
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Educational robotics
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Automated positioning mechanisms
WHAT'S INCLUDED
Package contents vary by selected configuration.
SM24BL-C001
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1 × SM24BL-C001 Servo
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Cables and accessories
SM24BL-C001 + Debugger
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1 × SM24BL-C001 Servo
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1 × Debugger
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Cables and accessories
SM24BL-C015
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1 × SM24BL-C015 Servo
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Cables and accessories
SM24BL-C015 + Debugger
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1 × SM24BL-C015 Servo
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1 × Debugger
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Cables and accessories
FAQ
What voltage does the SM24BL operate at?
The operating voltage range is 8–26V, with a typical operating voltage of 24V.
What is the rated torque?
The rated torque is 6 kg·cm (0.6 N·m) at 24V.
What is the stall torque?
The stall torque is 24 kg·cm at 24V.
What type of encoder does it use?
The SM24BL uses a 12-bit high-precision magnetic encoder with 0.088° position resolution.
Does it support 360° control?
Yes. The position control range is 0–360°.
What communication interface does it use?
The SM24BL uses RS485 serial communication.
Which protocols are available?
FEETECH Protocol and Modbus-RTU versions are available.
Can multiple servos be connected together?
Yes. Dual RS485 connectors support convenient daisy-chain connections for multi-servo systems.
