ACH5ST Reich Arcusaflex Drive Coupler

The ACH5ST Reich Arcusaflex Drive Coupler is a heavy-duty flexible coupling designed for industrial power-transmission applications where drivetrain protection, vibration control, and long-term reliability are critical. As part of the Arcusaflex ACH-series, the ACH5ST is engineered to provide stable torque transfer while absorbing torsional shock and compensating for shaft misalignment that occurs during normal machine operation.

Reich Arcusaflex couplers are widely specified in rotary screw air compressors, generator sets, pumps, and engine-driven machinery due to their proven elastomeric design and extended service life. The ACH5ST functions as a mechanical buffer between the prime mover and the driven component, reducing the transmission of harmful vibration and transient torque spikes into the drivetrain.

This coupling is intended for continuous-duty operation in industrial environments where vibration, load variation, and thermal expansion are common.

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Key Features and Benefits

• Genuine Reich Arcusaflex OEM Coupler – Manufactured to Reich engineering standards

• ACH-Series Industrial Design – Built for dependable torque transmission in demanding applications

• Elastomeric Flexible Element – Absorbs torsional vibration and shock loads

• Smooth Torque Transfer – Stable, backlash-free power transmission

• Misalignment Compensation – Accommodates angular, axial, and parallel shaft misalignment

• Robust Construction – Designed for continuous industrial service

• Low Maintenance Operation – No lubrication required; extended service intervals

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Functional Design and Performance

The ACH5ST Arcusaflex coupler utilizes a resilient elastomer element combined with precision-machined metal components to form a torsionally flexible shaft connection. This construction allows the coupling to isolate vibration and transient torque fluctuations before they are transmitted into the drive system.

In applications such as compressors and generator sets, torsional oscillations are a frequent source of mechanical wear, noise, and alignment stress. The elastomer element within the ACH5ST reduces these forces, helping stabilize the drivetrain and extend the service life of shafts, bearings, and connected equipment.

The flexible design also compensates for installation tolerances and thermal expansion that occur during operation, maintaining proper alignment without introducing excessive mechanical stress into the system.

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Applications and Compatibility

The ACH5ST Reich Arcusaflex Drive Coupler is commonly used across a wide range of industrial and power-transmission systems, including:

• Rotary screw and piston air compressors

• Generator sets and engine-driven equipment

• Industrial pumps and motor assemblies

• Gearbox-driven power-transmission systems

• Heavy industrial and processing machinery

This coupling is suitable for OEM installations and replacement applications where a Reich Arcusaflex ACH-series coupling is specified.

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Technical Specifications (General)

• Model: ACH5ST

• Manufacturer: Reich

• Product Line: Arcusaflex ACH-Series

• Coupler Type: Flexible elastomeric drive coupler

• Function: Torque transmission with vibration damping

• Misalignment Capability: Angular, axial, and parallel

• Operating Environment: Industrial and power-transmission systems

• Maintenance: Lubrication-free; inspect during routine service

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Performance Advantages

The ACH5ST Reich Arcusaflex Coupler delivers consistent, vibration-controlled torque transfer that enhances reliability throughout the drive system. By isolating torsional vibration, it reduces mechanical noise, minimizes wear on bearings and shafts, and helps prevent premature component failure.

Compared to rigid couplings or generic flexible couplers, Reich Arcusaflex couplings are engineered with elastomer characteristics optimized for industrial drive requirements. This ensures predictable damping behavior, stable torque transmission, and long-term durability under fluctuating loads.

Using the correct ACH-series coupling helps preserve original equipment performance, alignment accuracy, and overall operational efficiency.

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Why Choose Stark Industrial Products

Stark Industrial Products supplies OEM and OEM-spec industrial couplers used in compressors, generators, and power-transmission systems. Every coupling we offer is selected for durability, performance, and real-world application compatibility.

• OEM and OEM-spec Reich Arcusaflex couplers

• Fast order processing and secure packaging

• Knowledgeable technical support

• Trusted supplier for industrial power-transmission components

If you need help confirming hub styles, shaft sizes, or configuration options for the ACH5ST, our team is ready to assist.