51957751 Ingersoll Rand OEM Drive Coupler | Compressor Motor-to-Air-End Coupling

The 51957751 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 to the compressor air-end, transmitting rotational power efficiently while absorbing torsional vibration and accommodating minor shaft misalignment during normal operation.

In rotary screw air compressors, the drive coupler is a critical component of the drivetrain system. Excessive vibration, shock loads, and alignment variation can cause accelerated wear on bearings, shafts, and air-end components. The 51957751 coupler is manufactured to Ingersoll Rand’s OEM engineering standards to ensure correct dimensional tolerances, material integrity, and balance for reliable operation in demanding industrial environments.

Designed for continuous-duty applications, this coupler supports compressor performance in facilities where compressed air systems operate for extended cycles under variable load conditions.

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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 shock loads

• Smooth Torque Transmission – Stable, backlash-free power transfer

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

• Heavy-Duty Construction – Designed for industrial compressor service

• OEM Reliability – Maintains original compressor performance and service life

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Functional Design and Performance

The 51957751 OEM drive coupler incorporates a resilient elastomer element bonded to precision-machined metal hubs. This configuration allows the coupler to act as a torsional isolation device, reducing the transmission of vibration and transient torque spikes throughout the compressor drivetrain.

During startup and shutdown, compressors generate torsional forces that can place significant stress on connected components. The elastomer element within the 51957751 absorbs these forces, helping maintain alignment between the motor and air-end while reducing mechanical noise and drivetrain stress.

Because this is a genuine OEM Ingersoll Rand component, the elastomer compound and geometry are engineered specifically for Ingersoll Rand compressor operating characteristics. This ensures consistent torque delivery, predictable damping behavior, and reliable performance over long service intervals.

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Applications and Compatibility

The 51957751 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 maintenance and rebuild programs

This coupler is intended as a direct OEM replacement for systems referencing part number 51957751.

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Technical Specifications

• OEM Part Number: 51957751

• 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 scheduled service intervals

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Advantages of Using a Genuine Ingersoll Rand OEM Coupler

Using the 51957751 genuine Ingersoll Rand OEM drive coupler ensures the compressor drivetrain operates exactly as designed. Non-OEM substitutes may vary in elastomer hardness, dimensional tolerance, or bonding quality, potentially introducing excess vibration and reducing system reliability.

This OEM coupler delivers dependable torque transmission, minimizes stress on shafts and bearings, and supports extended service life of the air-end assembly. For industrial compressed air systems where uptime is critical, genuine OEM components help maintain performance and protect equipment investment.

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Why Choose Stark Industrial Products

Stark Industrial Products supplies verified genuine OEM compressor components and understands the importance of precision fitment 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 for part number 51957751, our team is ready to help.