{E} Airend Rebuild, Sullair LS20

Keep your air compressor operating efficiently with a high-quality replacement airend from Edmac Compressor Parts. The airend is the core compression component in a rotary screw air compressor, responsible for compressing incoming air and delivering the compressed air output required for industrial operations.

In rotary screw compressors, the airend contains precision-machined rotors that compress air as they rotate. Because the airend performs the primary compression function, it is one of the most critical components within the compressor package. Over time, airends can experience wear due to continuous operation, contamination, lubrication issues, heat, and normal mechanical stress. A worn or damaged airend may contribute to reduced airflow, increased energy consumption, abnormal noise, decreased efficiency, or unplanned downtime.

Edmac offers OEM and replacement airends for a wide range of rotary screw air compressor makes and models. Find the correct replacement using your compressor model, serial number, airend information, or OEM part number.

• Provides the primary compression function within a rotary screw air compressor
• Supports reliable compressed air production and system performance
• May help restore airflow and operating efficiency when replacing a worn airend
• Supports dependable operation of the compressor package
• Designed for compatibility with specific compressor models and applications

• Suitable for major repairs, rebuild projects, and airend replacement
• May help reduce unplanned downtime associated with airend wear or failure
• Available for a wide range of industrial rotary screw air compressor makes and models

An airend is the main compression assembly used in a rotary screw air compressor. It contains a pair of precision-engineered rotors that compress incoming air as they rotate. The compressed air produced by the airend is then delivered through the compressor system for industrial use. The airend is often considered the heart of a rotary screw compressor because it performs the actual compression process.

The airend operates continuously under demanding conditions and is subject to wear over time. Internal wear, contamination, lubrication issues, and extended operating hours may affect airend performance and efficiency. Replacing a worn or damaged airend helps restore reliable compressor operation and supports continued compressed air production.

Common signs that an airend may require inspection or replacement include reduced airflow, difficulty maintaining pressure, increased energy consumption, elevated operating temperatures, unusual noise, excessive vibration, lubricant carryover concerns, or declining compressor performance. These conditions should be evaluated as part of routine maintenance and troubleshooting procedures.

Airend service life varies depending on compressor design, operating conditions, maintenance practices, lubricant quality, contamination levels, and overall equipment usage. Many airends provide years of service when properly maintained. Always follow the manufacturer's recommendations regarding maintenance, inspection, rebuild intervals, and replacement guidelines.

In some applications, airends may be rebuilt using appropriate overhaul procedures and replacement components. The feasibility of rebuilding depends on the airend design, condition, and manufacturer's recommendations. Some operators choose airend replacement, while others may pursue rebuild options depending on their maintenance strategy and equipment requirements.

The correct replacement airend can typically be identified using the compressor manufacturer, model number, serial number, airend model information, or OEM part number. Selecting the proper replacement helps ensure compatibility and reliable performance within the compressor system.

Not exactly. In a rotary screw compressor, the airend is the compression element that contains the screw rotors. In reciprocating compressors, the comparable compression component is typically referred to as the compressor pump. Both perform the function of compressing air, but they use different compression technologies.