ST-3250-C002 - 12V 50kg.cm Copper Metal Gear Digital Servo Motor

Resources:
Datasheet

ST-3250-C002 High-Torque Smart Servo with 50 kgcm Torque, Steel Gears, Coreless Motor and Magnetic Encoder

The ST-3250-C002, also identified as STS3250-C002, is a high-torque TTL serial-bus smart servo designed for robotic arms, humanoid robots, quadrupeds, automation equipment, and heavy-load multi-servo mechanisms. It operates from 6V to 12V and delivers up to 50 kg.cm stall torque at 12V. The STS3250 platform provides approximately 0.133 sec/60deg no-load speed at 12V, combining substantial torque with responsive motion for demanding robotic joints.

The servo uses a 12-bit magnetic encoder for 360deg absolute position sensing and supports multi-turn continuous movement, step operation, configurable centre position, and acceleration-controlled start and stop. Its steel gear train, aluminium housing, coreless motor, ball bearings, dual-shaft mechanical design, and 25T spline provide a robust mechanical platform. Half-duplex TTL serial communication enables addressable multi-servo control and feedback for position, speed, voltage, current, temperature, and load.

Key Features

• 50 kg.cm Stall Torque at 12V: Provides high peak torque for robotic joints and heavy-load mechanisms.
• 6-12V Operating Range: Supports integration into a range of robotic power architectures.
• 360deg Position Control: Provides programmable absolute positioning throughout a complete rotation.
• 12-Bit Magnetic Encoder: Enables high-resolution contactless shaft-position sensing.
• 4096-Step Position Resolution: Supports approximately 0-4095 position values over 360deg.
• Approximately 0.088deg Resolution: Provides fine electronic position resolution for robotic motion control.
• Multi-Turn Operation: Supports multi-revolution movement for suitable robotic mechanisms.
• TTL Serial-Bus Interface: Uses digital packet communication for command, configuration, and feedback.
• Half-Duplex Communication: Allows bidirectional data exchange over a shared TTL signal line.
• Addressable Servo IDs: Supports multiple individually controlled servos on the same bus.
• 38400bps To 1Mbps: Supports configurable communication speeds for different control systems.
• 1/345 Gear Ratio: The C002 configuration is identified with a 1/345 transmission ratio.
• Steel Gear Train: Provides strong mechanical transmission for high-torque robotic applications.
• Coreless Motor: Provides responsive drive performance and smooth servo operation.
• Dual-Shaft Construction: Provides mechanical output on both sides of the same rotational axis.
• Ball Bearings: Support smooth shaft rotation and improved mechanical stability.
• Aluminium Case: Provides rigid construction and assists heat dissipation.
• 25T Output Spline: Uses a 25T spline with approximately 5.9 mm outside diameter.
• One-Key Centre Setting: Allows the current shaft position to be configured as the servo centre.
• Acceleration Control: Supports gradual acceleration and deceleration for smoother robotic movement.
• Real-Time Position Feedback: Allows monitoring of actual servo position.
• Speed Feedback: Reports current rotational speed to the host controller.
• Voltage Feedback: Enables monitoring of servo supply voltage.
• Current Feedback: Supports current monitoring for load and fault detection.
• Temperature Feedback: Provides internal temperature information during operation.
• Load Feedback: Allows monitoring of mechanical loading.
• Electronic Protection: Supports overload and over-current protection through smart-servo monitoring.

Applications

• Robotic arms
• Humanoid robots
• Quadruped robots
• Heavy-load robot joints
• Multi-axis robotic systems
• Industrial automation
• Automated positioning systems
• Research robotics
• Educational robotics
• AGV mechanisms
• Pan-and-tilt platforms
• Smart mechanical systems
• Embedded motion control
• Multi-servo networks
• Robot prototypes
• SO-ARM projects
• Leader-follower robotic arms