What is a Servo Feeder?

A servo feeder is a machine used in metal forming processes, specifically in the press industry, to feed material into a stamping press. The servo feeder accurately positions the material for the press, ensuring precise and efficient production. Servo feeders are driven by servo motors, which offer superior control, accuracy, and speed compared to other types of feeders.

Advantages of Servo Feeders

Servo feeders offer several benefits over traditional mechanical or pneumatic feeders. They provide high accuracy, repeatability, and flexibility in feeding operations. Their programmable nature allows for quick setup and changeovers, making them ideal for short production runs or applications with a variety of part sizes. Additionally, servo feeders are energy-efficient, as they only consume power when actively feeding material.

Understanding Press Feeding Systems

Types of Press Feeders:

1.Servo Feeders
As mentioned earlier, servo feeders use servo motors to drive their feeding mechanism. They offer high precision, speed, and flexibility, making them the preferred choice for many applications.

2.Mechanical Feeders
Mechanical feeders use mechanical linkages and cams to drive the feeding mechanism. These feeders are typically less expensive than servo feeders but lack the same level of control and accuracy.

3.Pneumatic Feeders
Pneumatic feeders use compressed air to power the feeding mechanism. They are relatively simple and affordable but can have limitations in terms of speed and precision compared to servo feeders.

Mechanical Feeder

Mechanical Feeder

servo feeder

Servo Feeder

Working Principle of Servo Feeders

Servo Motor and Drives
The key component of a servo feeder is the servo motor, which provides precise control and movement. Servo motors are electric motors with built-in feedback systems that allow for closed-loop control. The motor is connected to a drive, which receives signals from a controller, dictating the desired position, speed, and acceleration of the motor.

Feeding Mechanism
The feeding mechanism in a servo feeder consists of a set of rollers or grippers that hold and move the material through the feeder. The servo motor drives the feeding mechanism, providing the necessary force and movement to position the material accurately. As the material moves through the feeder, it is guided by a series of straighteners and guides to maintain the correct alignment before entering the press.

Selecting the Right Servo Feeder for Your Application

Factors to Consider
When choosing a servo feeder for your press operation, there are several factors to consider:

1.Press Compatibility
It is crucial to select a servo feeder that is compatible with your press machine. This includes factors such as the maximum press speed, stroke length, and available mounting space.

2.Material Type and Thickness
The servo feeder you choose should be capable of handling the type and thickness of the material you will be processing. This may require different roller or gripper designs, as well as adjustments to the feeding force and speed.

3.Feed Length and Speed
Depending on your application, you may require a servo feeder that can handle specific feed lengths and speeds. Some applications may necessitate short feed lengths at high speeds, while others may need long feed lengths at lower speeds.

Servo Feeder Maintenance Tips

To ensure the longevity and optimal performance of your servo feeder, it is essential to follow a proper maintenance routine:

1.Regular Cleaning
Keep the feeder clean and free from debris, as dirt and dust can cause wear and reduce the accuracy of the feeding process. Regularly inspect and clean the rollers, grippers, and other components.

Proper lubrication of the feeder’s moving parts is critical for smooth operation and reduced wear. Follow the manufacturer’s recommendations for lubrication intervals and types of lubricants to use.

3.Drive System Inspection
Regularly inspect the servo motor, drive, and controller for signs of wear or damage. Ensure all connections are secure and that the motor and drive are functioning properly.


Servo feeders are a versatile and efficient solution for feeding material into a press. With their precise control, high accuracy, and flexibility, they have become the preferred choice for many applications in the metal forming industry. By understanding the different types of press feeders, their working principles, and the factors to consider when selecting a servo feeder, you can make an informed decision that best suits your needs. Regular maintenance and proper care will ensure the longevity and optimal performance of your servo feeder.

servo feeder