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    Servo Motors

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    3000W 48V DC Servo Motor, 19 Nm, 1500 rpm

    $1,384.62
    SKU: ATO-SERVO-DC3000
    Affordable price BLDC servo motor with 3000W high power rating, 130 mm compact flange size, 2500 PPR incremental encoder, allowing for a high torque of 19 Nm and low speed of 1500 rpm. Its no-load speed is 1700 rpm and peak torque is 57 Nm, designed for 48V DC voltage.

    20 kg·cm (2 Nm) RC Servo Motor, 6V/ 7.4V

    $78.98
    SKU: ATO-SERVO-RC20
    Micro radio control servo motor, a full copper gear standard servo with 20 kg·cm (2 Nm) stall torque, 6V or 7.4V operating voltage available, compact size and high torque. Internal Hall Effect position sensor, excellent linearity and precision control.

    25 kg·cm (2.5 Nm) RC Servo Motor, 6V/ 7.4V

    $125.99
    SKU: ATO-SERVO-RC25
    Micro RC servo motor for sale at favorable price, with 25 kg·cm (2.5 Nm) stall torque, optional 6V or 7.4V operating voltage, waterproof grade IP54. It comes with steel gear and double ball bearings, compact design and high precision.

    30 kg·cm (3 Nm) RC Servo Motor, 6V/ 7.4V

    $168.99
    SKU: ATO-SERVO-RC30
    Low cost micro RC servo motor is coreless motor with 30 kg·cm (3 Nm) stall torque, 220° angle sensor, steel gear and double ball bearings, selectable 6V or 7.4V operating voltage. High torque radio control servo is compact and waterproof, best for RC planes and other steering equipment.

    35 kg·cm (3.5 Nm) RC Servo Motor, 6V/ 7.4V

    $179.99
    SKU: ATO-SERVO-RC35
    35 kg·cm (3.5 Nm) torque RC servo motor is a small gear servo motor with high precision non-contact magnetic encoder position sensor and double ball bearings. Selectable 6V or 7.4V operating voltage, waterproof grade IP54, used for model planes, submarines, remote-controlled robots, etc.

    40 kg·cm (4 Nm) RC Servo Motor, 6V/ 7.4V

    $259.69
    SKU: ATO-SERVO-RC40
    Economical price 40kg·cm (4 Nm) torque RC servo motor for sale online, optional 6V or 7.4V operating voltage, input voltage 4V – 8.4V. Radio control servo is designed with PVC connector and 360 degree angle sensor, which has high torque and long life span.

    60 kg·cm (6 Nm) RC Servo Motor, 6V/ 7.4V

    $299.99
    SKU: ATO-SERVO-RC60
    Cheap micro RC servo motor with 60 kg·cm (6 Nm) high torque, 6V and 7.4V operating voltage available. This radio control servo motor is a core motor designed with 2 ball bearings and metal gear, best for RC planes, submarines and remote-controlled robots.

    85 kg·cm (8 Nm) RC Servo Motor, 12V

    $379.99
    SKU: ATO-SERVO-RC85
    Brushless high torque RC servo motor, 85kg·cm stall torque, 12V operating voltage, is used for steering, vehicle, robot joints and arms, etc., and can control continuous rotation in forward and reverse directions at constant speed. It is a core motor with steel gear, small size and high precision.

    400W Linear Servo Motor, 1.27Nm, 1.02 kN, 800mm

    $1,336.51
    SKU: ATO-LCM-400W
    Cheap price linear servo actuator online for sale, with rated power 400 watt, rated voltage 220V, two connection types for selection, max. stroke 800mm, reduction ration 1:1, rated torque 1.27 Nm, rated thrust 0.68 kN, max. thrust 1.02 kN. Linear servo motor is widely used in the paper industry, chemical industry, automobile industry, electronics industry, mechanical automation industry, welding industry, etc.

    1hp (750W) Linear Servo Motor, 2.39Nm, 1.91 kN, 800mm

    $1,378.89
    SKU: ATO-SERVO-L750
    Economical price linear servo actuator with 750W rated power, reduction ratio 1:1, rated torque 2.39 Nm, rated thrust 1.28 kN, max. thrust 1.91 kN, max. stroke 800mm, 16mm diameter. Linear servo motor has the advantages of low noise, energy saving, clean, high rigidity, impact resistance, long service life.

    1kW Linear Servo Motor, 3.18Nm, 34.8 kN, 1500mm

    $3,197.46
    SKU: ATO-SERVO-L1000
    Good price linear servo motor with rated voltage 220V, 1000W rated power, reduction ratio 4, rated torque 3.18 Nm, rated thrust 23.2 kN, max. thrust 34.8 kN, max. stroke 1500mm, diameter 25mm. Linear servo actuator is widely used in the paper industry, chemical industry, automobile industry, electronics industry, mechanical automation industry, welding industry, etc.

    2hp (1.5kW) Linear Servo Motor, 7.16Nm, 24.3kN, 1500mm

    $3,299.68
    SKU: ATO-SERVO-L1500
    Cost-effective linear cylinder with rated voltage 220V, 2hp linear servo motor with reduction ratio 1:1, rated torque 7.16 Nm, rated thrust 16.2 kN, maximum thrust up to 24.3 kN,  maximum stroke 1500mm. The linear servo actuator has the advantages of low noise, energy saving and long service life.

    1500W Linear Servo Motor, 7.16Nm, 31.8kN, 1500mm

    $3,299.68
    SKU: ATO-SERVO-L1500w
    1.5kW linear servo actuator with rated voltage 220V, max. stroke 1500mm , rated torque 7.16 Nm, rated thrust 21.2 kN, maximum thrust up to 31.8 kN, two connections for selection. High speed linear servo motor is widely used in the paper industry, chemical industry, automobile industry, electronics industry, mechanical automation industry, welding industry, etc.

    6hp (4.5kW) Linear Servo Motor, 29Nm, 34kN, 1800mm

    $9,353.73
    SKU: ATO-SERVO-L4500
    Lower cost linear servo actuator with rated power 4500 watt, 220 volt rated voltage, max. stroke 1800mm, rated torque 29 Nm, rated thrust 22.96 kN, max. thrust can up to 34 kN, in-line/ reentrant two connection for needs. The linear sevo motor offers advantages of stable performance, low failure rate, and high reliability.

    5.5kW Linear Servo Motor, 35Nm, 56kN, 1800mm

    $9,496.59
    SKU: ATO-SERVO-L5500
    5500 watt linear cylinder offers two connections to choose, with rated voltage 220 volt, rated torque 35 Nm, rated thrust 37.42 kN, maximum thrust up to 56 kN, lead 10mm, reduction ratio 2:1, maximum stroke 1800mm. The linear servo actuator has the advantages of low noise, energy saving and long service life.

    50W AC High Speed Servo Motor, 3000 rpm

    $384.15
    SKU: ATO-SERVO-40S50W
    50W AC servo motor for sale at cheap price, features 3000 rpm high speed, 1-phase or 3-phase 220V AC voltage, 0.16 Nm rated torque, peak torque values up to 0.32 Nm.

    100W Brushless AC Servo Motor, 3-phase 220V

    $416.54
    SKU: ATO-SERVO-40S100W
    Three phase 100 watt AC electric servo motor at affordable price, brushless design, rated torque of 0.32 Nm, 220V rated voltage, rated speed of 3000 rpm, IP65 for body, long life and high precision.

    200W High precision AC Servo Motor, 0.64 Nm

    $458.43
    SKU: ATO-SERVO-60S200W
    200W power rating AC brushless servo motor for sale, with 3000 rpm speed, 1.2 apms, 0.64 Nm, 4 pole pairs, peak torque up to 1.91 Nm.

    400W Brushless AC Servo Motor, Three phase

    $464.38
    SKU: ATO-SERVO-60S400W
    400W (1/2 hp) 3 phase AC servo motor for sale, rated speed of 3000 rpm, maximum speed up to 3600 rpm, single or three phase 220V input voltage, 2.8 amps, 1.27 Nm torque, equipped with 2,500 PPR incremental/ absolute encoder.

    600W High Torque AC Servo Motor, 1.9 Nm, 3000 rpm

    $476.63
    SKU: ATO-SERVO-60S600W
    Low price 600W AC brushless servo motor for sale, 1.9 Nm rated torque, 3000 rpm rated speed. Single or three phase 220V AC input voltage, 3.5A rated current. IP54 for body, long life and high precision.

    Servo motor is a rotating actuator that controls the operation of mechanical components in the servo system, making the control speed and position very accurate. It can be divided into two main categories: AC and DC servo motors.

    The speed of the servo motor rotor is controlled by the input signal and can react quickly. In automatic control systems, servo motors can be used as actuators. Servo motor has the characteristics of small electromechanical time constant and high linearity, and it can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft.

    ATO gives you unprecedented choice and flexibility from a wide range of standard servo motors and servo drives, you can select the best one for your applications. We offer different types of servo motors:  Brushless AC servo motors, brushless DC servo motors, RC servo motors, linear servo motors, and gear servo motors. They feature compact structure, best price, good performance, fast response, smooth rotation and high torque.

    Servo Motor Advantages

    • High output: Power in relation to the servo motor size and weight.
    • Encoder: Determines the accuracy and resolution of the servo motor.
    • High-efficiency: The servo motor can approach 90% efficiency at light loads.
    • High Torque to Inertia Ratio: The servo motor can rapidly accelerate loads.
    • A servo motor has 2-3 times continuous power for short periods.
    • No autorotation when the signal voltage is zero, and the speed decreases at a uniform speed with the increase of torque.


    Basic Explanations on Types of Servo Motors

    AC Servo Motors

    110mm ac servo motorsAC servo motors are also brushless motors, which are divided into synchronous and asynchronous motors. At present, synchronous motors are generally used in motion control. They have a large power range and can achieve great power. Large inertia, low maximum rotation speed, and rapid decrease as the power increases. Therefore, it is suitable for low-speed and smooth-running machines. The structure of AC servo motor can be divided into two parts, namely stator part and rotor part. The stator structure is basically the same as that of the rotary transformer, and the two phase windings with 90 degrees of electric angle are placed in the stator core. One group is the exciting winding and the other group is the control winding. ATO AC brushless servo motors provides higher torque, come with 40mm to 180mm different square flange size, power rating from 50W to 7.5kW and speed range from 1000 rpm to 3000 rpm. Spindle AC servo motor with power rating from 50W to 15kW (20 hp) and wide range holding torque from to 0.16 Nm to 96 Nm.

    DC Servo Motors

    DC servo motors 24v 48vDC servo motors generally have a separate DC source in the field of winding and armature winding. Control can be archived by controlling the armature current or the field current. Depending on the application, the control shall be applied to the DC servo motor. Due to low armature inductance, dc servo motors provide very accurate and fast response to start or stop command signals. DC servo motors are used in similar equipment and computer numerical control machines. Actuators in various digital control systems. Power drives that require precise control of constant speed or require precise control of speed change curves. ATO DC brushless servo motors are designed to used at 24V/48V DC voltage, feedback with 2500 PPR increment encoder, with brake option available and achieve higher accuracy and resolution.

    RC Servo Motors

    RC servo motorsRC servo motor, short for radio control servo motor, can also be regarded as a DC servo motor, but its characteristics and application fields are different from DC servo motors. RC servo motors can accurately control speed and position accuracy, and can also convert voltage signals into torque and speed to drive control objects. Servo motor rotor speed is controlled by the input signal, and can respond quickly. In the automatic control system, RC servo motor used as an executive element, and has the characteristics of small electromechanical time constant, high linearity, starting voltage, can convert the electrical signals received into the angular displacement or angular velocity output on the motor shaft. When the signal voltage is zero, there is no rotation phenomenon, and the speed decreases uniformly with the increase of torque. ATO provide large selection of micro RC servo motor for remote control and different steering equipment, 6V, 7.4V or 12V operating voltage, stall torque from 20, 30, 40, 60 kg·cm to high torque 85 kg·cm to meet your needs.

    Linear Servo Motors

    Linear servo motorsLinear servo motor is a kind of motor similar to position rotation servo motor. But it has additional mechanisms to change the output back and forth from the direction of the circle. The working principle likes torque motors, but they are turned on and pushed flat. Electrical energy is converted into linear mechanical energy with high efficiency through electromagnetic interaction between coil assembly (main part) and permanent magnet assembly (minor part). Other common names for major components are motor, moving part, slide or slide, while minor components are also called magnetic circuits or tracks. ATO linear servo motors with rated power from 400W to 5.5kW, wide range rated torque from 1.27 Nm to 35 Nm, maximun thrust from 1.27 kN to 56 kN, maximum stroke 800mm, 1500mm, 1800mm for selection.

    Gear Servo Motors

    Gear servo motorsGear servo motor is a kind of motor which can produce high torque when the low speed motor output. This type of motors are used in many different applications and are commonly found in homes and workplaces. A gear servo motor can run on either AC or DC motors. The output range of a gear motor can be between 1200 and 3600 revolutions per minute or RPM. The purpose of the gearbox is to reduce the speed and thus produce a different torque at the end of the shaft. Torsional stiffness is the torsional resistance generated when torque is applied to motor shaft, transmission element and load. An infinitely rigid system can transfer torque to the load without angular deflection around the axis of rotation. However, even the strongest steel shafts can warp slightly under heavy load. The deflection varies with the applied torque, the material of the transmission element and its shape. It makes intuitive sense that long, thin parts are more flexible than short, thick ones.

    How to Choose a Right Servo Motor?

    Each type of servo motor has parameters such as rated torque, maximum torque, and servo motor inertia in its specifications. There must be a correlation between each parameter and the load torque and load inertia. The output torque of the servo motor must meet the requirements of the motion conditions of the load mechanism such as the acceleration and weight of the mechanism. The motion conditions of the mechanism (horizontal and vertical rotation) are not directly related to the output of the servo motor, but in general, the higher the output of the servo motor, the higher the relative output torque.

    The choice of servo motor is not only influenced by the weight of the mechanism, but also the equipment motion conditions will change the choice of servo motor. The greater the inertia, the greater the acceleration and deceleration torque, and the shorter the acceleration and deceleration time, the greater the servo motor output torque. When selecting servo motor specifications, follow the steps below.

    AC servo motors

    1. When the maximum output power torque of the initial selection of the servo motor must be greater than the acceleration torque + load torque, other models must be selected for verification until the symbol meets the requirements.
    2. The load torque is calculated based on the load weight, structure, coefficient of friction and operating efficiency.
    3. The load inertia of the mechanism is calculated by selecting the appropriate load inertia correction formula according to the requirements of the operating conditions.
    4. According to the load inertia amount and servo motor inertia, choose the appropriate false selected servo motor specification.
    5. Calculates the continuous instantaneous torque based on the load torque, acceleration torque, deceleration torque and holding torque.
    6. Clarify the motion conditions of the load mechanism, i.e. acceleration and deceleration speed, motion speed, mechanism weight, mechanism motion, etc.
    7. The acceleration torque and deceleration torque are calculated by combining the inertia of the servo motor and the load inertia.

    How to Control a Servo Motor?

    Servo motors generally have three control modes, namely: Speed control mode, torque control mode and position control mode. Both speed control and torque control are controlled by analog, while position control is controlled by sending pulses.

    Servo Motor Position Control

    The position control method generally determines the rotation speed by the frequency of externally input pulses, and determines the rotation angle by the number of pulses. There are also some servo drives that can directly assign speed and displacement through communication. Because the position mode can have very strict control on speed and position, it is generally used in positioning devices, such as CNC machine tools, printing machinery and so on.

    Servo Motor Speed Control

    The rotation speed can be controlled by analog input or pulse frequency. When there is outer loop PID control of the upper computer control device, the speed mode can also be used for positioning. However, the position signal of the motor or the position signal of the direct load must be fed back to the upper computer for calculation. Speed mode also supports direct load outer loop detection position signal. At this time, the encoder at the motor shaft end only detects the motor speed, and the position signal is provided by the direct detection device at the final load end. This has the advantage of reducing errors in the intermediate transmission process and increasing the positioning accuracy of the entire system.

    Servo Motor Torque Control

    The specific method is to set the external output torque of the servo motor shaft through the input of the external analog quantity or the assignment of the direct address. The specific performance is: For example, if 10V corresponds to 5Nm, when the external analog quantity is set to 5V, the motor shaft output is 2.5Nm. If the motor shaft load is lower than 2.5Nm, the servo motor rotates in a clockwise direction; when the external load is equal to 2.5Nm, the servo motor does not rotate; when the external load is greater than 2.5Nm, the motor rotates in an anticlockwise direction. The setting torque can be changed by instantly changing the analog setting. It can also be achieved by changing the value of the corresponding address through communication. Its application is mainly in winding and unwinding devices that have strict requirements on the force of the material, such as winding devices or fiber optic equipment.