309142 Boss OEM Drive Coupler | Compressor Motor-to-Air-End Coupling

The 309142 Boss OEM Drive Coupler is an original equipment flexible coupling engineered specifically for use in Boss compressor drive assemblies. This component connects the prime mover—typically an 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.

Boss compressors are commonly used in demanding industrial and mobile applications where vibration, load changes, and extended run cycles are expected. In these environments, the drive coupler plays a critical role in protecting high-value rotating components from shock loads and alignment-related stress. The 309142 coupler is manufactured to Boss OEM engineering standards to ensure correct fitment, balance, and long-term operational reliability.

This coupler is designed for continuous-duty compressor environments where uptime and drivetrain protection are essential.

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Key Features and Benefits

• Genuine Boss 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

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Functional Design and Performance

The 309142 OEM drive coupler utilizes a resilient elastomer element bonded to precision-machined metal hubs. This construction allows the coupler to function 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, compressors generate torsional shock that can place significant stress on shafts, bearings, and seals. The elastomer element within the 309142 absorbs these forces, helping maintain alignment, reduce mechanical noise, and protect adjacent components from damage.

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

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Applications and Compatibility

The 309142 Boss OEM Drive Coupler is commonly used in:

• Boss industrial and rotary screw air compressors

• Motor-to-air-end drive assemblies

• Industrial compressed air systems

• 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 309142.

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Technical Specifications

• OEM Part Number: 309142

• Manufacturer: Boss Industries

• 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 compressor drive systems

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

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Advantages of Using a Genuine Boss OEM Coupler

Using the 309142 genuine Boss 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 component 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.

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Why Choose Stark Industrial Products

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

• Genuine OEM Boss parts

• Fast order processing and secure packaging

• Knowledgeable technical support

• Trusted supplier for industrial air compressor components

If you need assistance confirming compatibility with a specific Boss compressor model or drive configuration, our team is ready to help.