Product Overview

The Ingersoll Rand 39911631 Oil Filter is a replacement filtration component designed for the lubrication systems of compatible industrial air compressors. It helps remove solid particles, accumulated debris, and other contaminants from circulating compressor oil before the oil returns to important internal components.

In an oil-injected rotary screw air compressor, lubricating oil performs several essential functions. It helps lubricate moving components, assists with heat removal, contributes to sealing between the rotors, and supports stable compressor operation. During normal operation, the oil can collect particles generated by equipment wear, environmental contamination, and long-term use.

The 39911631 oil filter helps maintain oil cleanliness by retaining contaminants within its filtration media. This reduces the circulation of unwanted particles through the lubrication circuit and helps protect components such as the compressor airend, bearings, and oil cooler.

This filter is associated with selected Ingersoll Rand compressor models, including certain EP and Nirvana series applications. However, compatibility is not universal across all compressors in these product families. The correct filter must be confirmed using the compressor model, serial number, and applicable parts documentation.

The product information supplied for this listing includes the associated reference number 47560110001, which should be checked against the original equipment documentation before being treated as an interchangeable part number.

Technical Specifications

Note: Dimensions and weight are supplied listing specifications. Confirm the physical product and packaging measurements before using them for installation or shipping calculations. Verify the associated reference number and equipment compatibility against the original compressor documentation.

Function and Working Principle

The 39911631 oil filter works as part of the compressor lubrication circuit. Its primary purpose is to remove suspended contaminants from the oil while allowing the required lubricant flow to continue through the system.

1. Oil Contaminant Removal

During compressor operation, oil may collect dust, metal particles, carbon deposits, and other contaminants. If these materials continue circulating, they can contribute to component wear and affect lubrication performance.

The oil filter provides a physical filtration barrier that captures particles as oil passes through the filter media.

2. Protection of Internal Compressor Components

The compressor airend contains rotating components that depend on appropriate lubrication and operating conditions. Contaminated oil can increase wear and contribute to premature deterioration.

By helping maintain oil cleanliness, the 39911631 supports the protection of internal components and helps maintain the intended lubrication conditions.

3. Maintaining Oil Circulation

The filter is designed to operate within a specified lubrication circuit. Its filtration characteristics and flow resistance must be suitable for the compressor in which it is installed.

Using the correct filter helps maintain the balance between contaminant retention and oil circulation. An unsuitable replacement may create excessive pressure drop or fail to provide the intended filtration performance.

4. Supporting Heat Management

In oil-injected rotary screw compressors, oil also plays a role in transferring heat away from operating components. Clean oil can help maintain the intended lubrication and heat-transfer process.

The oil filter does not replace the oil cooler or other cooling components, but it supports the condition of the circulating lubricant.

5. Supporting Stable Compressor Operation

A properly maintained filtration system helps reduce contamination-related operating problems. It is one part of a broader maintenance strategy that also includes oil replacement, air filtration, separator inspection, and monitoring of operating conditions.

Role in Industrial Air Compressor Systems

The 39911631 is a maintenance component rather than an electronic control module. Its function is directly related to the lubrication and protection of the compressor’s mechanical system.

Lubrication Circuit Protection

The filter helps remove contaminants from circulating oil before they can continue through the lubrication system. This supports the condition of the airend and other oil-dependent components.

Airend Maintenance

The airend is one of the most important assemblies in a rotary screw compressor. Its rotating elements require suitable lubrication and controlled operating conditions.

Maintaining the oil filtration system can help reduce contamination-related wear and support long-term airend reliability.

Oil Cooler Support

The oil cooler helps regulate lubricant temperature during compressor operation. Clean oil supports the intended circulation and heat-transfer process, while excessive contamination can affect the overall condition of the lubrication system.

Preventive Maintenance

Replacing the oil filter at the appropriate maintenance interval helps prevent excessive contaminant accumulation. It also provides an opportunity to inspect the filter housing, sealing surfaces, and surrounding connections.

Industrial Applications

The Ingersoll Rand 39911631 is intended for compatible industrial air compressor installations where the corresponding oil filtration specification is required.

1. Industrial Manufacturing Facilities

Manufacturing plants depend on compressed air for pneumatic tools, production machinery, automated handling systems, and process equipment.

A properly maintained compressor lubrication system helps support reliable compressed-air production and reduce unexpected maintenance interruptions.

2. Rotary Screw Air Compressors

Oil-injected rotary screw compressors use circulating lubricant for lubrication, sealing, and heat management. The 39911631 is associated with selected Ingersoll Rand rotary screw compressor applications.

Its suitability must be confirmed using the exact compressor model and serial number.

3. Automotive Production Lines

Automotive manufacturing facilities use compressed air for pneumatic tools, assembly equipment, material handling, and various production processes.

Maintaining the compressor oil filtration system helps support the availability of compressed air for these operations.

4. Industrial Machinery and Equipment

Many industrial machines depend on compressed air for actuators, control valves, pneumatic cylinders, and other equipment.

The oil filter contributes to compressor maintenance by helping maintain the condition of the lubrication circuit.

5. Continuous Production Environments

Facilities operating compressors for extended periods require a consistent preventive maintenance program. Correct oil filtration helps reduce contamination-related risks and supports equipment availability.

Installation and System Integration

Correct installation is important for filtration performance, oil circulation, and compressor reliability.

1. Verify the Filter Model

Before installation, confirm that 39911631 matches the compressor’s required filter specification.

Check the equipment model, serial number, original filter reference, and parts manual. Do not assume that all compressors within the same product family use the same oil filter.

2. Shut Down and Isolate the Compressor

Stop the compressor and follow the manufacturer’s maintenance procedure. Isolate the electrical supply and allow the equipment to cool.

Compressor lubrication circuits may retain pressure and hot oil after shutdown. Release pressure using the prescribed procedure before opening the filter housing or removing the existing filter.

3. Remove the Existing Filter

Remove the old filter according to the compressor service instructions. Inspect the filter mounting area and sealing surface for contamination, damage, or remaining gasket material.

Avoid allowing dirt or foreign objects to enter the lubrication circuit during replacement.

4. Install the Replacement Filter

Check the new filter for visible damage and verify that the sealing surfaces are clean.

Install the filter according to the manufacturer’s instructions. Apply the specified tightening procedure and avoid excessive force that could damage the housing or sealing components.

5. Inspect for Leakage

After installation, restore the system according to the service procedure. Check the filter connection and surrounding components for oil leakage.

Monitor the compressor’s operating conditions and confirm that the lubrication system is functioning normally.

6. Record Maintenance Information

Record the replacement date, compressor operating hours, filter part number, and maintenance observations.

Maintaining accurate service records helps identify recurring problems and supports future filter replacement planning.

Compatible System Components

The 39911631 operates as part of a complete compressor lubrication and filtration system.

These components are examples of equipment within a compressor system. They are not necessarily included with the 39911631 oil filter.

Alternative Models and Replacement Considerations

When replacing the 39911631, engineers and maintenance personnel should verify the original filter specification rather than relying only on physical appearance.

Before selecting an alternative, compare:

• Overall dimensions and installation geometry.
• Thread size and connection design.
• Filter media and filtration characteristics.
• Maximum operating pressure.
• Pressure-drop characteristics.
• Seal material and dimensions.
• Oil compatibility and operating temperature.
• Compressor model and serial-number requirements.

A filter that physically fits may still have different filtration performance or pressure characteristics. Always confirm technical compatibility before installation.

Key Advantages

Effective Oil Contaminant Control

The filter helps retain particles and debris in the compressor oil, supporting cleaner lubricant circulation.

Protection of Compressor Components

Maintaining oil cleanliness helps reduce contamination-related wear in the airend and other lubrication-dependent assemblies.

Support for Preventive Maintenance

The replaceable filter element provides a practical maintenance point for monitoring and maintaining compressor lubrication quality.

Industrial Compressor Application

The 39911631 is associated with selected Ingersoll Rand industrial compressor models and can support maintenance programs when correctly matched to the equipment.

Support for Lubrication-System Reliability

Proper filtration helps maintain the intended condition of the circulating oil and supports the overall lubrication process.

Replacement-Part Identification

The dedicated part number makes it easier for maintenance teams and purchasing departments to identify the required filter when checking equipment documentation.

Technical FAQs

1. What is the Ingersoll Rand 39911631?

The 39911631 is an oil filter used in the lubrication systems of compatible Ingersoll Rand air compressors. It helps remove contaminants from circulating compressor oil.

2. What is the main function of this oil filter?

Its primary function is to capture particles and debris in the compressor lubricant. This helps protect lubrication-dependent components and maintain oil cleanliness.

3. Which compressors use the 39911631?

The part is associated with selected Ingersoll Rand EP and Nirvana compressor applications, among other documented configurations. Exact compatibility depends on the compressor model and serial number.

4. Is the 39911631 suitable for every Ingersoll Rand compressor?

No. Ingersoll Rand uses different oil filter designs across its compressor ranges. Always verify the required part number using the equipment parts manual or original filter identification.

5. How often should the oil filter be replaced?

The replacement interval depends on the compressor model, operating hours, oil condition, and service environment. Some documented applications specify replacement at approximately 2,000 operating hours or annually, but the applicable compressor maintenance schedule should take priority.

6. Can a clogged oil filter affect compressor performance?

Yes. Excessive filter restriction can affect oil circulation and may cause abnormal pressure conditions. Follow the manufacturer’s maintenance instructions and investigate any filter-related alarms or abnormal pressure readings.

7. Can I use an aftermarket replacement?

An aftermarket filter may be suitable if it meets the required dimensions, filtration performance, pressure rating, sealing requirements, and equipment compatibility. Physical similarity alone is not sufficient.

8. What should be checked before installation?

Confirm the part number, filter dimensions, connection design, sealing surface, and compatibility with the compressor model. Also inspect the filter and packaging for damage.

9. Does the oil filter need to be replaced when changing compressor oil?

Follow the compressor manufacturer’s service procedure. In many preventive maintenance programs, the oil filter is replaced during scheduled oil service to help prevent contaminants from the previous operating period from entering the fresh lubrication system.

10. Why should the compressor serial number be checked before ordering?

Different production versions of the same compressor model may use different filter configurations. The serial number helps identify the correct parts specification and reduces the risk of ordering an incompatible replacement.

Procurement and Maintenance Recommendations

When purchasing the Ingersoll Rand 39911631, confirm the complete part number and compare it with the original compressor documentation. The additional reference number 47560110001 supplied for this listing should also be verified before being used as a formal cross-reference.

For critical compressor installations, check the compressor model, serial number, filter connection, dimensions, and filtration requirements. If purchasing from a third-party supplier, confirm whether the product is an original Ingersoll Rand component or an aftermarket replacement.

During maintenance, inspect the filter mounting area and sealing surfaces. Keep the lubrication circuit clean during replacement and follow the required shutdown, pressure-release, and restart procedures.

Maintain records of operating hours, oil changes, filter replacements, and abnormal pressure conditions. These records can help maintenance teams identify contamination problems and plan service activities before they affect production.

Conclusion

The Ingersoll Rand 39911631 Oil Filter is a replacement filtration component for compatible industrial air compressor lubrication systems. By removing particles and contaminants from circulating oil, it helps protect internal compressor components and supports stable lubrication-system operation.

Its application in selected Ingersoll Rand EP and Nirvana compressor configurations makes accurate model and serial-number verification important. For maintenance and procurement projects, confirming the complete part number and filtration requirements helps ensure that the replacement filter matches the original equipment specification.