Servo Motors

A servo motor is a rotary actuator that allows for precise control of angular or linear position, velocity, and acceleration. It operates on the principle of a closed-loop control system, where feedback from the motor is continuously compared with the desired position. This feedback loop ensures accurate and controlled movement.

Price of Servo Motors

The price of servo motors varies based on factors like torque, size, and brand. Higher torque and larger-sized servo motors generally come at a higher cost. It's advisable to consider your project requirements and budget constraints when choosing a servo motor.

Tips for Buying Servo Motors

• Torque Requirements: Determine the required torque for your application. Servo motors come in various torque ratings, so selecting one with the appropriate torque ensures optimal performance.
• Size and Weight: Consider the physical dimensions and weight of the servo motor. Ensure it fits within the constraints of your project, especially if space is a critical factor.
• Feedback System: Choose a servo motor with the appropriate feedback system. Common types include encoder feedback and resolver feedback, each offering specific advantages in terms of precision and reliability.
• Speed and Acceleration: Evaluate the speed and acceleration requirements of your application. Different servo motors have varying speed capabilities, so select one that aligns with your project's needs.
• Power Supply Compatibility: Check the compatibility of the servo motor with your power supply. Ensure that the voltage and current requirements match the available power source.

Types of Servo Motors

• Analog Servo Motors: Analog servo motors operate based on an analog control signal. They are known for their simplicity and cost-effectiveness, making them suitable for applications with moderate precision requirements. Common models include Hitec HS-311 and Futaba S3003.
• Digital Servo Motors: Digital servo motors utilize digital control signals, providing enhanced precision, accuracy, and rapid response. They are ideal for applications demanding high performance. Popular models include Savox SC-1258TG and Hitec HS-5645MG.
• Brushless DC Servo Motors: Brushless DC servo motors offer improved efficiency and longevity compared to their brushed counterparts. They are commonly used in applications requiring continuous rotation. Notable models are Tekin T-360 and Castle Creations 1512.
• High-Torque Servo Motors: High-torque servo motors are designed to deliver greater force, making them suitable for applications with demanding torque requirements. Examples include TowerPro MG996R, Power HD Storm-4 and Savox SV-1270TG.
• Micro Servo Motors: Micro servo motors are compact and lightweight, ideal for small-scale applications where space is limited. Common models include TowerPro SG90, SG92R and EMAX ES08AII.
• Industrial Servo Motors: Industrial servo motors are engineered for heavy-duty applications, providing robust performance in challenging environments. Notable models are Siemens 1FK7 and Yaskawa SGM7D.
• Robotics Servo Motors: Robotics servo motors are tailored for precise control in robotic systems. They offer the necessary accuracy for intricate movements. Examples include Dynamixel AX-12A and Kollmorgen AKM2G.
• Low-Cost Servo Motors: Low-cost servo motors provide budget-friendly options for applications with basic positioning requirements. Common models include TowerPro MG90S, SG92R and EMAX ES08MAII.
• Waterproof Servo Motors: Waterproof servo motors are designed to resist water ingress, making them suitable for outdoor or marine applications. Examples include Savox SW-1210SG and Traxxas 2085X.
• Metal Gear Servo Motors: Metal gear servo motors feature gears made of metal, providing increased durability and strength. They are suitable for high-stress applications. Noteworthy models are TowerPro MG995, Hitec HS-7950TH and Futaba S9373SV.