China supplier Kah-40cl3ne AC Servo Actuator for Collaborative Robots Premium Quality Harmonic Drive Actuator Joint Actuator Motor for Robot vacuum pump oil near me

Product Description

Product Description

Hollow shaft rotary actuators

                                                                                           KAH series hollow shaft rotary actuators
Main features

1.KAH series hollow shaft rotary actuator provides large-torque and high-precision rotary actuation. With integrated design, processing and assembly technique, it is provided with high precision speed reducer, framework torque motor, hollow shaft high resolution absolute encoder, brake and intelligent sensor.
2.It provides high torque output and torque density, for example, the torque of KAH-40 rotary actuator can reach 800N·m.
3.The positioning precision of rotary actuator is within 30 Arc sec.
4.An internal through hole is set to facilitate threading wires, gas pipe and laser beams and simplify system structure.
5.Dozens of product models are provided to meet diversified needs, and the products with 220 VAC, 110 VAC and 48 VAC voltages are available.
6.The high protection grade (IP67) makes the product applicable to severe working environment.
8.It can be used by matching with KDE series EtherCAT bus servo drives to realize ultra-low vibration controland reliable and stable operation. It provides an integrated drive control solution.


The products have been widely used in such fields as electronic and semiconductor equipment, precision machine tool, factory automation systems, precision laser processing device, LED equipment, detection device, medical apparatus and instruments, robot and special mechanical arm, printing machinery, spray painting equipment, glass processing equipment, precision measuring instrument and other fields.




KAH-40 encoder Specification parameter
Series KAH40
Model KAH 40A 40B 40C 40D 40E
Deceleration ratio 1:51 1:81 1:101 1:121 1:161
Maximum torque starting &stopping(N·M) 497 641 702 762 800
Instantaneous maximum torque(N·M) 242 351 460 557 557
AC voltage 220VAC Maximum speed RPM 76.5 48.1 38.6 32.2 24.2
Rated speed RPM 43.1 27.2 21.8 18.2 13.7
Maximum current Arms 22.79 18.51 16.26 14.73 11.62
Rated current Arms 8.67 7.92 8.32 8.41 6.32
Torque constant N·M/Arms 27.91 44.32 55.26 66.23 88.09
Motor phase resistance Ohms 1.571
Motor phase inductance mH 3.026
Motor Back EMF Vrms/kRPM 50.87
AC voltage 1100VAC Maximum speed RPM 52.9 33.3 26.7 22.3 16.8
Rated speed RPM 35.3 22.2 17.8 14.9 11.2
Maximum current Arms 35.85 29.12 25.58 23.17 18.29
Rated current Arms 14.55 13.29 13.97 14.11 10.61
Torque constant N·M/Arms 16.63 26.41 32.93 9.47 52.5
Motor phase resistance Ohms 0.53
Motor phase inductance mH 1.207
Motor Back EMF Vrms/kRPM 44.96
AC voltage 480VAC Maximum speed RPM 35.30 22.20 17.80 14.90 11.20
Rated speed RPM 29.40 18.50 14.90 12.40 9.30
Maximum current Arms 72.66 75.06 51.81 46.98 37.05
Rated current Arms 35.38 41.10 33.95 34.34 25.82
Torque constant N·M/Arms 6.84 8.54 13.55 16.22 21.59
Motor phase resistance Ohms 0.139
Motor phase inductance mH 0.207
Motor Back EMF Vrms/kRPM 17.48
Absolute Encoder Encoder Type Hollow absolute multiturn encoders ,Single-loop 19,22or24, multiturn16
Encoder resolution Motor(1time)rotation 219(524,288),222(4,194.304)or224(16777216)
Motor multiple rotation counter 215(65.536)
Incremental Encoder resolution Hollow incremental encoder,40000impulse/rpm(4 time signal)
encoder Output shaft resolution pulse/rev 2040000 3240000 4040000 4840000 6440000
uniderection positioning accuracy Arc Sec 60 40 40 40 40
Bidirectional positioning accuracy Arc Min 2 1.5 1 1 1
Overturning stiffness ×104 N·m /rad 120.5 157.4
Torsional stiffness ×104 N·m /rad 14 18.6
Moment of inertia without Brake Kg*m2 3.91 9.86 15.36 22.68 39.86
with Brake Kg*m2 4.62 12.03 18.39 26.35 47.50
Weight without Brake Kg 9.1
with Brake Kg 9.7
Motor Grade 16
Motor insulation Heat resistance grade :F(155ºC)
Insulation resistance:above200MΩ(DC500V)
Dielectric Strength:AC1500V/1min
Protection grade Fully closed self cooling type(IP65/IP67 degree)

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Application: Motor, Machinery
Hardness: Hardened Tooth Surface
Installation: Vertical Type
US$ 3000/Piece
1 Piece(Min.Order)


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servo motor

How are servo motors used in CNC machines and other precision machining equipment?

Servo motors play a crucial role in CNC (Computer Numerical Control) machines and other precision machining equipment. They provide precise and dynamic control over the movement of various axes, enabling high-accuracy positioning, rapid speed changes, and smooth motion profiles. Here’s a detailed explanation of how servo motors are used in CNC machines and precision machining equipment:

1. Axis Control:

CNC machines typically have multiple axes, such as X, Y, and Z for linear movements, as well as rotary axes for rotational movements. Servo motors are employed to drive each axis, converting electrical signals from the CNC controller into mechanical motion. The position, velocity, and acceleration of the servo motors are precisely controlled to achieve accurate and repeatable positioning of the machine’s tool or workpiece.

2. Feedback and Closed-Loop Control:

Servo motors in CNC machines are equipped with feedback devices, such as encoders or resolvers, to provide real-time information about the motor’s actual position. This feedback is used in a closed-loop control system, where the CNC controller continuously compares the desired position with the actual position and adjusts the motor’s control signals accordingly. This closed-loop control ensures accurate positioning and compensates for any errors, such as mechanical backlash or load variations.

3. Rapid and Precise Speed Changes:

Servo motors offer excellent dynamic response, allowing CNC machines to achieve rapid and precise speed changes during machining operations. By adjusting the control signals to the servo motors, the CNC controller can smoothly accelerate or decelerate the machine’s axes, resulting in efficient machining processes and reduced cycle times.

4. Contouring and Path Tracing:

CNC machines often perform complex machining tasks, such as contouring or following intricate paths. Servo motors enable precise path tracing by accurately controlling the position and velocity of the machine’s tool along the programmed path. This capability is crucial for producing intricate shapes, smooth curves, and intricate details with high precision.

5. Spindle Control:

In addition to axis control, servo motors are also used to control the spindle in CNC machines. The spindle motor, typically a servo motor, rotates the cutting tool or workpiece at the desired speed. Servo control ensures precise speed and torque control, allowing for optimal cutting conditions and surface finish quality.

6. Tool Changers and Automatic Tool Compensation:

CNC machines often feature automatic tool changers to switch between different cutting tools during machining operations. Servo motors are utilized to precisely position the tool changer mechanism, enabling quick and accurate tool changes. Additionally, servo motors can be used for automatic tool compensation, adjusting the tool’s position or orientation to compensate for wear, tool length variations, or tool offsets.

7. Synchronized Motion and Multi-Axis Coordination:

Servo motors enable synchronized motion and coordination between multiple axes in CNC machines. By precisely controlling the servo motors on different axes, complex machining operations involving simultaneous movements can be achieved. This capability is vital for tasks such as 3D contouring, thread cutting, and multi-axis machining.

In summary, servo motors are integral components of CNC machines and precision machining equipment. They provide accurate and dynamic control over the machine’s axes, enabling high-precision positioning, rapid speed changes, contouring, spindle control, tool changers, and multi-axis coordination. The combination of servo motor technology and CNC control systems allows for precise, efficient, and versatile machining operations in various industries.

servo motor

What is the significance of closed-loop control in servo motor operation?

Closed-loop control plays a significant role in the operation of servo motors. It involves continuously monitoring and adjusting the motor’s behavior based on feedback from sensors. The significance of closed-loop control in servo motor operation can be understood through the following points:

1. Accuracy and Precision:

Closed-loop control allows servo motors to achieve high levels of accuracy and precision in positioning and motion control. The feedback sensors, such as encoders or resolvers, provide real-time information about the motor’s actual position. This feedback is compared with the desired position, and any deviations are used to adjust the motor’s behavior. By continuously correcting for errors, closed-loop control ensures that the motor accurately reaches and maintains the desired position, resulting in precise control over the motor’s movements.

2. Stability and Repeatability:

Closed-loop control enhances the stability and repeatability of servo motor operation. The feedback information enables the control system to make continuous adjustments to the motor’s inputs, such as voltage or current, in order to minimize position errors. This corrective action helps stabilize the motor’s behavior, reducing oscillations and overshoot. As a result, the motor’s movements become more consistent and repeatable, which is crucial in applications where the same motion needs to be replicated accurately multiple times.

3. Compensation for Disturbances:

One of the key advantages of closed-loop control is its ability to compensate for disturbances or variations that may occur during motor operation. External factors, such as friction, load changes, or variations in the operating environment, can affect the motor’s performance and position accuracy. By continuously monitoring the actual position, closed-loop control can detect and respond to these disturbances, making the necessary adjustments to maintain the desired position. This compensation capability ensures that the motor remains on track despite external influences, leading to more reliable and consistent operation.

4. Improved Response Time:

Closed-loop control significantly improves the response time of servo motors. The feedback sensors provide real-time information about the motor’s actual position, which allows the control system to quickly detect any deviations from the desired position. Based on this feedback, the control system can adjust the motor’s inputs promptly, allowing for rapid corrections and precise control over the motor’s movements. The fast response time of closed-loop control is crucial in applications where dynamic and agile motion control is required, such as robotics or high-speed automation processes.

5. Adaptability to Changing Conditions:

Servo motors with closed-loop control are adaptable to changing conditions. The feedback information allows the control system to dynamically adjust the motor’s behavior based on real-time changes in the operating environment or task requirements. For example, if the load on the motor changes, the control system can respond by adjusting the motor’s inputs to maintain the desired position and compensate for the new load conditions. This adaptability ensures that the motor can perform optimally under varying conditions, enhancing its versatility and applicability in different industrial settings.

In summary, closed-loop control is of significant importance in servo motor operation. It enables servo motors to achieve high levels of accuracy, stability, and repeatability in position and motion control. By continuously monitoring the motor’s actual position and making adjustments based on feedback, closed-loop control compensates for disturbances, enhances response time, and adapts to changing conditions. These capabilities make closed-loop control essential for achieving precise and reliable operation of servo motors in various industrial applications.

servo motor

Can you explain the difference between a servo motor and a regular electric motor?

A servo motor and a regular electric motor are both types of electric motors, but they have distinct differences in terms of design, control, and functionality.

A regular electric motor, also known as an induction motor or a DC motor, is designed to convert electrical energy into mechanical energy. It consists of a rotor, which rotates, and a stator, which surrounds the rotor and generates a rotating magnetic field. The rotor is connected to an output shaft, and when current flows through the motor’s windings, it creates a magnetic field that interacts with the stator’s magnetic field, resulting in rotational motion.

On the other hand, a servo motor is a more specialized type of electric motor that incorporates additional components for precise control of position, speed, and acceleration. It consists of a regular electric motor, a sensor or encoder, and a feedback control system. The sensor or encoder provides feedback on the motor’s current position, and this information is used by the control system to adjust the motor’s behavior.

The key difference between a servo motor and a regular electric motor lies in their control mechanisms. A regular electric motor typically operates at a fixed speed based on the voltage and frequency of the power supply. In contrast, a servo motor can be controlled to rotate to a specific angle or position and maintain that position accurately. The control system continuously monitors the motor’s actual position through the feedback sensor and adjusts the motor’s operation to achieve the desired position or follow a specific trajectory.

Another distinction is the torque output of the motors. Regular electric motors generally provide high torque at low speeds and lower torque at higher speeds. In contrast, servo motors are designed to deliver high torque at both low and high speeds, which makes them suitable for applications that require precise and dynamic motion control.

Furthermore, servo motors often have a more compact and lightweight design compared to regular electric motors. They are commonly used in applications where precise positioning, speed control, and responsiveness are critical, such as robotics, CNC machines, automation systems, and remote-controlled vehicles.

In summary, while both servo motors and regular electric motors are used to convert electrical energy into mechanical energy, servo motors offer enhanced control capabilities, precise positioning, and high torque at various speeds, making them well-suited for applications that require accurate and dynamic motion control.

China supplier Kah-40cl3ne AC Servo Actuator for Collaborative Robots Premium Quality Harmonic Drive Actuator Joint Actuator Motor for Robot   vacuum pump oil near me		China supplier Kah-40cl3ne AC Servo Actuator for Collaborative Robots Premium Quality Harmonic Drive Actuator Joint Actuator Motor for Robot   vacuum pump oil near me
editor by CX 2024-02-02