2657903494 Atlas Copco OEM Drive Coupler | Compressor Motor-to-Air-End Coupling

The 2657903494 Atlas Copco OEM Drive Coupler is an original equipment coupling engineered specifically for use in Atlas Copco rotary screw air compressor drive assemblies. This component connects the electric motor or engine to the compressor air-end, allowing rotational power to be transmitted efficiently while absorbing torsional vibration and compensating for minor shaft misalignment.

In rotary screw compressors, the drive coupler is a critical mechanical interface. Improper elastomer characteristics, incorrect damping performance, or dimensional inaccuracies can lead to excessive vibration, accelerated bearing wear, shaft damage, and premature air-end failure. The 2657903494 coupler is manufactured to Atlas Copco’s OEM engineering standards to ensure proper fitment, balance, and long-term reliability in demanding industrial environments.

This coupler is designed for continuous-duty compressor operation where equipment is subjected to variable loads, temperature fluctuations, and extended run cycles.

Key Features and Benefits

• Genuine Atlas Copco OEM Part – Manufactured and specified by Atlas Copco

• Exact Fit & Function – Direct replacement for the original factory-installed drive coupler

• Elastomeric Flexible Design – Absorbs torsional vibration and dampens shock loads

• Smooth Torque Transmission – Provides stable, backlash-free power transfer between motor and air-end

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

• Heavy-Duty Construction – Designed for continuous-run industrial compressor service

• OEM Reliability – Preserves original compressor performance and service life

Functional Design and Performance

The 2657903494 OEM drive coupler utilizes a resilient elastomer element bonded to precision-machined metal hubs. This construction allows the coupler to act as a torsional buffer, isolating vibration and transient torque spikes before they are transmitted into the compressor drive train.

During startup, shutdown, and load changes, rotary screw compressors generate torsional shock that can place excessive stress on shafts, bearings, and seals. The elastomer element within the 2657903494 absorbs these forces, helping maintain alignment, reduce mechanical noise, and protect adjacent components.

Because this is a genuine OEM Atlas Copco component, the elastomer hardness, bonding process, and hub geometry are matched exactly to compressor operating characteristics. This ensures predictable damping behavior and consistent performance throughout the service life of the coupler.

Applications and Compatibility

The 2657903494 Atlas Copco OEM Drive Coupler is commonly used in:

• Atlas Copco rotary screw air compressors

• Industrial compressed air systems

• Motor-to-air-end drive assemblies

• Compressor rebuilds and scheduled maintenance programs

This coupler is intended as a direct OEM replacement for the original factory-installed unit. Using the correct OEM coupler helps maintain proper alignment, vibration control, and protection of critical compressor components.

Technical Specifications

• OEM Part Number: 2657903494

• Manufacturer: Atlas Copco

• Component Type: Flexible elastomeric drive coupler

• Material: Steel hubs with bonded elastomer element

• Function: Torque transmission with vibration damping

• Misalignment Capability: Designed to accommodate angular, axial, and parallel misalignment

• Operating Environment: Industrial rotary screw air compressors

• Maintenance: Lubrication-free; inspect during routine compressor service

Performance Advantages of Using OEM

Using the 2657903494 genuine Atlas Copco OEM coupler ensures your compressor drive system operates exactly as designed. Aftermarket couplers may appear similar but often differ in elastomer stiffness, balance, or dimensional tolerances, which can introduce excessive vibration, reduce efficiency, and shorten air-end life.

This OEM coupler delivers consistent torque transmission, reduces mechanical stress on connected components, and helps extend the service life of bearings, shafts, and air-ends. For mission-critical compressed air systems, genuine OEM components are essential to maintaining uptime and reliability.

Why Choose Stark Industrial Products

Stark Industrial Products supplies verified genuine OEM compressor components, including original Atlas Copco drive couplers. We do not substitute aftermarket equivalents when OEM parts are specified.

• Genuine OEM compressor parts

• Fast order processing and secure packaging

• Knowledgeable technical support

• Trusted supplier for industrial air compressor components

If you need help confirming compatibility with a specific Atlas Copco compressor model or serial range, our team is ready to assist.