Electric servo balancers are designed to assist operators when lifting and positioning workpieces repeatedly.

They can be useful when manual handling is physically demanding but the application still requires an operator to control the movement.

What Does a Servo Balancer Do?

A servo balancer uses an electric drive system to assist with lifting and positioning.

Instead of requiring the operator to support the full weight of the workpiece, the balancer provides lifting assistance while the operator guides the load.

This approach can be useful for repetitive handling and assembly tasks.

1. Determine the Load

The first step is to determine the actual weight of the workpiece.

The maximum load should be considered rather than selecting equipment based only on the average weight.

The weight of the tooling or gripping device should also be included when evaluating the total handling load.

2. Define the Working Range

Consider how far the workpiece needs to move.

Important dimensions may include:

• Lifting height

• Horizontal movement

• Required reach

• Rotation or positioning range

• Distance between workstations

The balancer configuration should provide sufficient working range for the intended operation.

3. Consider the Handling Frequency

A balancer may be particularly useful when the same lifting operation is repeated many times during a production shift.

Higher operating frequency makes operator assistance and handling ergonomics more important considerations.

4. Consider the Tooling

The connection between the balancer and the workpiece is critical.

Depending on the application, the tooling may involve:

• Hooks

• Clamps

• Vacuum devices

• Mechanical grippers

• Application-specific tools

The tooling should securely support the workpiece while allowing the operator to perform the required movement.

5. Consider the Installation

The available supporting structure and installation space also need to be considered.

A balancer may be installed using a suitable crane structure, support arm or track system depending on the application.

Conclusion

Selecting an electric servo balancer is not simply a matter of choosing a lifting capacity.

Load, working range, operating frequency, tooling and installation conditions should all be evaluated together.

A properly configured balancer can provide useful lifting assistance while allowing operators to maintain control of the handling process.