36774321 Ingersoll Rand OEM Drive Coupler | Compressor Motor-to-Air-End Coupling

The 36774321 Ingersoll Rand OEM Drive Coupler is an original equipment flexible coupling engineered specifically for use in Ingersoll Rand 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 during operation.

In rotary screw air compressors, the drive coupler is one of the most critical mechanical interfaces in the entire system. If the coupler does not meet OEM specifications for elastomer composition, dimensional accuracy, or balance, excessive vibration and shock loads can be transferred into the drivetrain. This can lead to accelerated bearing wear, shaft damage, seal failure, and premature air-end issues. The 36774321 coupler is manufactured to Ingersoll Rand’s OEM engineering standards to ensure proper fitment, smooth operation, and long-term reliability.

This coupler is designed for continuous-duty compressor environments where equipment operates under fluctuating loads, temperature variation, and extended run cycles.

Key Features and Benefits

• Genuine Ingersoll Rand OEM Part – Factory-specified original equipment component

• 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 – Stable, backlash-free power transfer from motor to air-end

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

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

• OEM Reliability – Preserves original compressor performance and service life

Functional Design and Performance

The 36774321 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 transitions, rotary screw compressors generate torsional shock loads that place significant stress on shafts, bearings, and seals. The elastomer element within the 36774321 absorbs these forces, helping maintain alignment, reduce mechanical noise, and protect adjacent components from damage.

Because this is a genuine OEM Ingersoll Rand component, the elastomer compound, bonding process, and hub geometry are matched precisely to compressor operating characteristics. This ensures predictable damping behavior, stable torque transmission, and consistent performance throughout the service life of the coupler.

Applications and Compatibility

The 36774321 Ingersoll Rand OEM Drive Coupler is commonly used in:

• Ingersoll Rand rotary screw air compressors

• Industrial compressed air systems

• Motor-to-air-end drive assemblies

• Compressor rebuilds and preventative maintenance programs

This coupler is intended as a direct OEM replacement for the original factory-installed unit referenced by part number 36774321.

Technical Specifications

• OEM Part Number: 36774321

• Manufacturer: Ingersoll Rand

• Component Type: Flexible elastomeric drive coupler

• Material: Steel hubs with bonded elastomer element

• Function: Torque transmission with vibration damping

• Misalignment Capability: Angular, axial, and parallel

• Operating Environment: Industrial rotary screw air compressors

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

Advantages of Using a Genuine Ingersoll Rand OEM Coupler

Using the 36774321 genuine Ingersoll Rand OEM drive coupler ensures your compressor drive system operates exactly as designed. Non-OEM or incorrect couplers may 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, minimizes mechanical stress on connected components, and helps extend the service life of bearings, shafts, and compressor air-ends. For mission-critical compressed air systems, genuine OEM components are essential for maintaining uptime and reliability.

Why Choose Stark Industrial Products

Stark Industrial Products supplies verified genuine OEM compressor components and understands the importance of correct fitment and performance in industrial air systems.

• Genuine OEM Ingersoll Rand parts

• No aftermarket substitutions

• Fast order processing and secure packaging

• Knowledgeable technical support

If you need assistance confirming compatibility with a specific Ingersoll Rand compressor model or serial range, our team is ready to help.