HA-CO Rigid Shaft Couplings

Torsionally rigid and maintenance-free couplings for precise shaft connections

When two shafts need to be connected without shaft movement or misalignment, a rigid shaft coupling provides a reliable solution. HA-CO rigid couplings are designed for applications where high torsional stiffness and direct torque transmission are important.

These couplings, also known as clamp couplings or shell couplings, completely surround the shaft and provide a highly rigid connection between two shafts. Thanks to their construction, high torque can be transmitted without necessarily requiring machining of the shaft.

HA-CO offers both one-piece and two-piece versions. The split or two-piece version is particularly advantageous when simple installation and removal are required.

What is a HA-CO rigid shaft coupling?

A rigid coupling is a mechanical connection used to directly connect two shafts. Unlike flexible couplings, it is not designed to compensate for shaft misalignment or movement.

The coupling is used when both shafts are accurately aligned with respect to each other.

A rigid coupling provides:

• A direct connection between two shafts.

• Torsionally rigid torque transmission.

• High mechanical stability.

• A compact construction.

• A reliable connection without a keyway or extensive shaft machining, depending on the version.

The coupling surrounds the shaft and provides reliable power transmission through a clamping connection.

German quality from HA-CO

The rigid couplings from HA-CO GmbH are designed for applications in industrial drive technology and mechanical engineering.

HA-CO focuses on high-quality mechanical precision components and drive technology solutions for industrial applications. Precise construction, reliable torque transmission and long service life are key considerations in the development of these components.

The rigid couplings are designed for applications where a rigid and compact connection between shafts is required.

OpenSupply supplies high-quality HA-CO couplings to companies looking for reliable solutions for industrial drive systems.

Key benefits

HA-CO rigid couplings combine a compact construction with a highly rigid mechanical connection.

The main benefits include:

• High torsional stiffness – provides direct and precise torque transmission.

• Full shaft enclosure – the coupling completely surrounds the connected shaft.

• Compact construction – suitable for applications where limited installation space is important.

• No extensive shaft machining required – depending on the version, the coupling can be used without a keyway or other extensive shaft machining.

• Easy installation – the coupling can be mounted quickly and securely onto the shaft.

• Easy removal – especially the two-piece version can be removed without dismantling other machine components.

• Vibration-resistant screw connection – the fastening screws are designed to prevent unwanted loosening caused by vibrations.

• Wear-resistant – designed for long-term industrial use.

• Maintenance-free – the construction does not require regular maintenance.

• Reliable torque transmission – suitable for applications where high torsional stiffness is required.

One-piece and two-piece versions

HA-CO offers different versions of rigid shaft couplings.

An important difference is the construction of the coupling.

One-piece rigid coupling

The one-piece version consists of a single body and is installed onto the respective shafts. This version provides a compact and highly rigid connection.

Two-piece rigid coupling

The two-piece version consists of two separate parts that are installed around the shaft.

An important advantage is the simple removal. The coupling can be removed without completely dismantling other machine or drive components.

This can be particularly practical for machines where maintenance, inspection or replacement of drive components is regularly required.

Torsionally rigid torque transmission

One of the most important characteristics of a rigid coupling is its high torsional stiffness.

While flexible couplings allow certain movements between shafts, a rigid coupling is designed to transmit movement and torque as directly as possible.

This makes the coupling suitable for applications where:

• Direct torque transmission is important.

• Minimal torsional flexibility is required.

• High positioning accuracy is necessary.

• The shafts are correctly aligned with respect to each other.

The rigid connection ensures that the applied torque is effectively transmitted between the connected shafts.

No shaft machining required

An important advantage of the HA-CO shell coupling is that extensive shaft machining is often not required.

Depending on the version, the coupling can be secured using a clamping connection. This means that a keyway or other shaft machining may not be necessary.

This can simplify installation and provide greater flexibility when designing a drive system.

A clamping connection can also provide an even distribution of forces over the contact surface of the shaft.

Easy removal with the two-piece version

When maintenance and accessibility are important, the two-piece version provides a practical advantage.

Because the coupling consists of two separate parts, it can be installed and removed around the shaft.

This means the shaft does not necessarily have to be removed from the machine and other components can remain in position.

This can reduce maintenance time and makes the coupling particularly suitable for machines where easy access to drive components is important.

Reliable screw connection

In industrial machines, vibrations during operation can affect mechanical connections.

HA-CO rigid couplings feature secured screw connections designed to prevent unwanted loosening of the screws caused by vibrations.

This helps maintain a reliable connection during long-term operation, provided that the coupling is installed correctly and the screws are tightened according to the specified requirements.

Wear-resistant and maintenance-free

HA-CO rigid couplings are designed for long-term use in industrial applications.

The mechanical construction does not contain moving or flexible wear components that require regular replacement. As a result, the couplings are maintenance-free under normal operating conditions.

This makes them suitable for machines where a reliable and low-maintenance shaft connection is required.

Compact construction

In many industrial machines, the available space around the drive system is limited. A compact coupling is therefore important.

HA-CO shell couplings feature a compact construction while providing high torsional stiffness.

This allows them to be used in drive systems where installation space is limited, without requiring a large or complex coupling.

Correct installation is essential

To achieve the maximum transferable torque of a rigid coupling, correct installation is essential.

The shafts must be accurately prepared and correctly aligned. In addition, the correct coupling size and version must be selected based on the technical requirements of the application.

Important factors include:

• Required torque.

• Shaft diameter.

• Maximum rotational speed.

• Shaft material.

• Available installation space.

• Shaft alignment.

• Required torsional stiffness.

• Operating conditions.

Correct sizing and proper installation ensure that the coupling can operate reliably and that the available maximum torque can be transmitted effectively.

Applications of HA-CO rigid couplings

HA-CO rigid couplings can be used in various industrial machines and drive systems where a rigid and reliable connection between shafts is required.

Examples include:

• Mechanical engineering.

• Industrial drives.

• Automation systems.

• Servo and positioning systems.

• Production machinery.

• Conveyor and transport systems.

• Precision drives.

• Industrial pumps and machinery.

• Mechanical drive systems.

• Compact machine designs.

The couplings are particularly suitable for applications where the connected shafts are accurately aligned and compensation of shaft misalignment is not required.

Easy integration into your drive system

HA-CO rigid couplings can be integrated into various types of drive systems.

When designing a drive system, it is important to first determine whether a rigid coupling is suitable for the specific application. Since these couplings do not compensate for shaft misalignment or movement, the connected shafts must be correctly aligned.

When selecting the right coupling, factors such as the following can be considered:

• Shaft diameter.

• Required torque.

• Maximum speed.

• Available installation space.

• Mounting method.

• One-piece or two-piece construction.

• Material and operating conditions.

Buy HA-CO rigid shaft couplings from OpenSupply

With a HA-CO rigid shaft coupling, you choose a compact and torsionally rigid solution for directly connecting two correctly aligned shafts.

OpenSupply supplies HA-CO rigid couplings for various industrial applications and can assist you in selecting the correct version for your machine or drive system.

Do you have a specific shaft diameter, torque requirement or mounting requirement? The technical specialists at OpenSupply can help you select the right coupling for your application.

Choose reliable rigid drive technology with HA-CO

A correctly selected rigid coupling provides a direct, rigid and reliable connection between two shafts.

HA-CO rigid couplings combine high torsional stiffness, compact construction, easy installation and maintenance-free operation for a wide range of industrial applications.

HA-CO rigid couplings – high-quality German drive technology for torsionally rigid torque transmission, compact installation and reliable shaft connections.

Order your HA-CO rigid shaft coupling from OpenSupply or contact our technical specialists for advice on the right version for your application.