Magnetically Applied Clutches

Magnetically Applied Clutches are a critical component in motion control systems. Designed to reliably transmit torque and connect or disconnect a drive to its load, they provide precise, electrically actuated engagement for demanding applications. These clutches are power-on clutches, meaning they engage and transfer torque when electrical current is applied to the coil.

At SEPAC, we don’t just supply clutches – we partner with engineers to design application-specific solutions that balance torque, response time, and reliability. Whether you’re optimizing a process or updating critical devices, our magnetically applied solutions are engineered to maximize your system’s performance and consistency under real-world conditions.

Selection Considerations for Magnetically Applied Clutches

Selecting the right magnetically applied clutch for a given application depends on four key considerations:

Function and Torque. The first step is to identify your application’s function and required torque. Magnetically applied clutches connect or disconnect shafts by transferring torque when power is applied to the coil. Consider your application’s speed, load, and operating conditions to determine your torque requirements.

Speed and Heat Dissipation. All clutches must deliver efficient operation within a system’s speed specifications without excessive heat generation. High-speed applications require clutches with maximum rotational speeds.

Environment. A clutch’s operating environment has a significant impact on its performance and longevity. Magnetically applied clutches must be designed to accommodate your application’s humidity, temperature, and vibration levels.

Torque Transmission Type. Magnetically applied tooth clutches are offered with both tooth and friction-based torque transmission types. Tooth designs offer greater torque in a smaller outer diameter, and friction designs offer dynamic engagement capabilities.

Types of Magnetically Applied Clutches

SEPAC offers multiple product series, accommodating a wide range of operating needs.

Tooth Clutches

Tooth clutches feature interlocking teeth that provide powerful static torque. This design is an ideal option for applications that require extremely high torque within a compact space. Some of the most common applications of tooth clutches include heavy machinery, defense vehicles, robotics, and test benches.

SEPAC offers several series of tooth clutches, including:

RFTC

SFTC

STCC

WMTC

Friction Clutches

Friction clutches transmit torque using friction plates and are designed to operate under dry conditions as well as in oil, for maximum flexibility.
Our friction clutches come in two series: SFDC and RFDC. SFDC clutches are stationary field multiple disk clutches that feature permanently lubricated, sealed bearings. RFDC series clutches are rotating field multiple-disc clutches that do not use bearings.

Performance Considerations and Troubleshooting

To maximize the longevity of your electromagnetic clutches, it’s important to select the proper product for your needs, perform installation correctly, and schedule routine preventative maintenance. Some of the most common issues that affect magnetically applied clutch performance are overheating, coil failure, and torque loss. To avoid these challenges, familiarize yourself with the following common mistakes:

Incorrect Sizing. Undersized clutches are prone to overheating and will often fail prematurely.

Misalignment. Lack of proper alignment leads to increased stress and vibrations.

Improper Voltage. An incorrect voltage supply will result in decreased torque.

Vibrations. Any type of vibration, whether operational or environmental, can lead to premature wear and damage to clutches.

If you’re experiencing performance issues with your magnetically applied clutch, one of the simplest troubleshooting steps is to look for signs of contamination in the air gap or damage to the seal, which can allow grease to escape from the bearings.

Choose SEPAC for Magnetically Applied Clutches

SEPAC offers an extensive range of magnetically applied clutches, engineered for high-performance applications. With decades of experience serving demanding industries, our experts can help you identify your ideal solution and adapt existing designs to your exact performance requirements. All of our solutions are manufactured to the highest quality standards within our AS9100 and ISO 9001-certified facility. To get started, request a quote today or get in touch with any questions.