Product Overview

The Ingersoll Rand 39911631 Oil Filter Element is a replacement filtration component designed for industrial air compressor lubrication systems. It helps remove solid particles, dirt, and other contaminants from compressor oil before the oil circulates through critical components of the compressor.

In oil-injected rotary screw air compressors, lubricating oil performs several important functions. It helps lubricate moving components, supports heat removal, assists with sealing inside the compression chamber, and protects internal surfaces against excessive wear. Maintaining oil cleanliness is therefore essential for reliable compressor operation.

The 39911631 oil filter is designed to help maintain the cleanliness of the circulating lubricant. By retaining contaminants before they can continue through the lubrication circuit, the filter supports the protection of the compressor airend, oil cooler, and other oil-contact components.

This part number is associated with selected Ingersoll Rand compressor applications. Published cross-reference information identifies it for certain compressor models, including selected Nirvana series configurations. However, compatibility can vary by compressor model and serial number, so the original equipment documentation should always be checked before ordering.

The product information supplied for this listing also includes reference number 47560107001. This reference is retained as an associated listing number and should be confirmed against the original equipment parts documentation.

Technical Specifications

Note: Dimensions and weight are the supplied listing specifications. Published filter drawings and cross-reference catalogs may use different dimensional conventions. Confirm the actual filter dimensions, thread, sealing arrangement, and net weight before installation or shipment.

Function and Working Principle

The Ingersoll Rand 39911631 oil filter element operates as part of the compressor lubrication circuit. Its primary purpose is to capture contaminants carried by the circulating oil and help maintain the cleanliness required for compressor operation.

1. Removal of Oil Contaminants

During compressor operation, oil can collect particles generated by normal mechanical wear, environmental contamination, and oil degradation.

The filter media provides a filtration barrier that retains suitable particles as oil passes through the element. This helps reduce the amount of contamination entering downstream components.

Effective filtration is important because accumulated particles can contribute to abrasive wear, restricted oil passages, and reduced equipment reliability.

2. Protection of Compressor Components

Compressor oil circulates through several parts of the lubrication and cooling system. Contaminated oil may accelerate wear on internal surfaces and affect the performance of oil-contact components.

The 39911631 filter helps protect the lubrication circuit by retaining contaminants before the oil continues through the system.

Maintaining a clean oil supply supports the operating condition of the airend, oil cooler, bearings, and other components that depend on proper lubrication.

3. Support for Oil Circulation

A filter must provide suitable filtration while allowing the compressor lubrication system to maintain the required oil flow.

As contaminants accumulate, the pressure drop across a filter can increase. A filter that is excessively restricted may affect lubrication performance and should be replaced according to the compressor manufacturer’s maintenance instructions.

Using the correct filter specification helps maintain the intended balance between filtration performance and oil-flow requirements.

4. Support for Compressor Temperature Management

In oil-injected rotary screw compressors, oil also helps remove heat generated during compression. Maintaining an effective lubrication circuit supports the compressor’s overall thermal management.

The oil filter does not directly cool the compressor, but it contributes to maintaining oil cleanliness and circulation, both of which are important to the normal operation of the lubrication and cooling system.

5. Reduction of Maintenance Risks

Replacing the oil filter at the appropriate service interval helps prevent excessive contamination buildup. It also provides an opportunity for maintenance personnel to inspect the filter housing, sealing surfaces, and surrounding connections.

The correct replacement interval depends on the compressor model, operating hours, oil condition, environment, and manufacturer maintenance schedule.

Role in Industrial Air Compressor Systems

The 39911631 oil filter element is a maintenance component rather than an electrical control module. Its role is to support the mechanical and lubrication functions of an industrial air compressor.

Compressor Lubrication Circuit

The filter is installed in the compressor’s oil filtration arrangement. As oil circulates through the system, the filter captures contaminants that could otherwise continue through the lubrication circuit.

The exact installation position and oil-flow direction depend on the compressor design.

Airend Protection

The airend is one of the most important assemblies in a rotary screw compressor. It contains precision components that require suitable lubrication and operating conditions.

Maintaining clean compressor oil helps reduce the risk of contamination-related wear and supports the airend’s operating reliability.

Oil Cooler and Lubrication Components

The compressor oil system also supports heat transfer and lubrication for other components. Contamination can affect oil passages and contribute to maintenance problems.

A correctly specified filter helps maintain the cleanliness of the oil circulating through these components.

Preventive Maintenance Programs

Industrial compressors often operate for extended periods and may support critical production processes. Scheduled oil-filter replacement is therefore an important part of preventive maintenance.

Maintenance teams should record filter replacement dates, operating hours, oil condition, and any unusual pressure or temperature readings.

Industrial Applications

The Ingersoll Rand 39911631 is intended for compatible industrial compressor lubrication systems. Its application should be confirmed against the compressor model and serial number.

1. Industrial Air Compressor Stations

Manufacturing facilities commonly use rotary screw compressors to provide compressed air for pneumatic equipment, production machinery, and utility systems.

The oil filter helps maintain lubricant cleanliness during continuous or intermittent compressor operation.

2. Manufacturing and Processing Plants

Compressed air is used in production lines, material handling, pneumatic actuators, and automated machinery.

In these environments, compressor availability can influence production continuity. Maintaining the lubrication system through correct filter replacement helps support reliable compressor operation.

3. Industrial Utility Systems

Large facilities may operate multiple compressors as part of a central compressed-air network. Each compressor requires suitable filtration and lubrication maintenance.

The 39911631 can be considered for compatible Ingersoll Rand equipment where the specified filter arrangement matches the original part.

4. Heavy-Duty Compressor Installations

Industrial compressors operating under demanding conditions may experience extended running hours, elevated ambient temperatures, and changing load conditions.

Oil filtration is an important part of maintaining the lubrication system under these operating conditions. The replacement filter must meet the required pressure, flow, and filtration specifications.

5. Maintenance and Equipment Refurbishment

During compressor overhauls and scheduled servicing, oil filters are commonly replaced together with other maintenance items.

Using the correct filter helps restore the intended filtration arrangement and reduces the risk of installation problems caused by incorrect dimensions or connections.

Installation and Replacement Guidelines

Correct installation is important for maintaining oil circulation and preventing leaks in the compressor lubrication system.

1. Verify the Original Part Number

Before purchasing or installing the 39911631 filter, check the compressor’s parts manual, original filter label, and equipment serial number.

Do not rely exclusively on the compressor family name. Different production versions may use different filter part numbers.

2. Confirm Physical Dimensions and Connections

Check the filter’s outside diameter, length, mounting thread, sealing arrangement, and installation clearance.

The supplied listing dimensions are 290 × 50 × 119 mm. Since published technical references may describe the filter using different dimensional orientations, compare the replacement with the original element before installation.

Thread compatibility and sealing dimensions are particularly important. A filter that appears similar may not fit the original filter head correctly.

3. Shut Down and Isolate the Compressor

Before replacing the filter, stop the compressor and isolate the electrical supply according to the equipment’s maintenance procedures.

Allow the system to depressurize and cool where necessary. Follow the manufacturer’s safety instructions before opening any part of the lubrication circuit.

4. Remove the Used Filter

Carefully remove the existing filter using the appropriate tools and procedures. Be prepared for residual oil and dispose of the used filter and oil in accordance with applicable environmental requirements.

Inspect the mounting surface and filter head for dirt, damage, or remaining gasket material.

5. Install the Replacement Filter

Confirm the replacement part number and sealing arrangement before installation.

Follow the manufacturer’s instructions for seal preparation, installation, and tightening. Avoid excessive tightening, which may damage the sealing surface or filter housing.

Where the compressor manufacturer specifies a particular priming or filling procedure, follow that procedure before restarting the machine.

6. Check for Leaks and Abnormal Conditions

After replacement, restart the compressor according to the approved commissioning procedure.

Inspect the filter connection for oil leakage and monitor relevant operating conditions, including oil pressure and temperature.

If abnormal pressure readings, leakage, or alarms occur, stop the equipment and investigate before returning it to normal operation.

Compatible System Components

The 39911631 oil filter operates as part of a wider compressor lubrication and maintenance system.

The components listed above are typical parts of an industrial rotary screw compressor system. They are not necessarily supplied with the 39911631 oil filter.

Alternative Models and Replacement Considerations

Several Ingersoll Rand oil filter part numbers may appear in cross-reference catalogs. However, filters should not be substituted solely because they have similar dimensions or belong to the same compressor family.

Before selecting an alternative, compare:

• Original equipment part number.
• Compressor model and serial number.
• Filter outside diameter and overall length.
• Mounting thread and sealing dimensions.
• Filtration media and efficiency.
• Maximum working pressure.
• Differential-pressure characteristics.
• Oil compatibility and temperature range.
• Manufacturer replacement recommendations.

A filter that physically fits may still have different filtration performance or pressure characteristics. For critical compressor installations, use a replacement that meets the original equipment requirements.

Key Advantages

Effective Oil Contamination Control

The filter helps remove particles and contaminants from circulating compressor oil, supporting the cleanliness of the lubrication system.

Support for Compressor Component Protection

By reducing the circulation of solid contaminants, the filter helps protect oil-contact components against contamination-related wear.

Support for Lubrication System Reliability

Suitable filtration contributes to the normal operation of the compressor lubrication circuit.

Convenient Maintenance Replacement

The filter is a replaceable maintenance component that can be incorporated into scheduled compressor servicing.

Industrial Compressor Application

The 39911631 part number is documented in Ingersoll Rand compressor filter references and is associated with selected industrial compressor configurations.

Equipment Lifecycle Support

Correct replacement filtration components help maintenance teams continue servicing existing compressor installations and managing spare-parts requirements.

Technical FAQs

1. What is the Ingersoll Rand 39911631?

The 39911631 is an Ingersoll Rand oil filter element designed for compatible industrial air compressors. It removes contaminants from compressor oil to support lubrication-system cleanliness.

2. What does this oil filter do?

It captures particles and other contaminants carried by the compressor oil before the oil continues through the lubrication circuit.

3. Which compressors use the 39911631 oil filter?

Published filter references associate 39911631 with selected Ingersoll Rand compressor models, including certain Nirvana configurations. Compatibility must be checked against the compressor’s exact model and serial number.

4. Is 39911631 an air filter?

No. It is an oil filter element. An air filter removes contaminants from incoming air, while an oil filter cleans the lubricant circulating through the compressor.

5. How often should the oil filter be replaced?

The replacement interval depends on the compressor model and operating conditions. Some service information for specific Ingersoll Rand compressor applications recommends replacement at approximately 2,000 operating hours or annually. Always follow the maintenance schedule for the exact compressor model.

6. Can I replace 39911631 with 39911615?

Do not assume that these part numbers are interchangeable. Compare the compressor application, filter dimensions, thread, sealing arrangement, and filtration specifications before selecting a substitute.

7. What happens if the oil filter becomes blocked?

A heavily restricted filter can increase pressure drop and affect oil circulation. Depending on the compressor design, this may lead to abnormal operating conditions or maintenance alarms.

8. Does the oil filter improve compressor performance?

The filter does not increase the compressor’s rated capacity. Its purpose is to maintain oil cleanliness and help protect the lubrication system, which supports reliable equipment operation.

9. What should be checked before purchasing?

Confirm the part number, compressor model, serial number, filter dimensions, mounting thread, sealing arrangement, and supplier product condition. For replacement filters, also check the filtration and pressure specifications.

10. Is 47560107001 an alternative part number for 39911631?

The relationship between 47560107001 and 39911631 should be confirmed through the original equipment parts documentation. Do not treat the two references as verified interchangeable part numbers without manufacturer confirmation.

Procurement and Maintenance Recommendations

When purchasing the Ingersoll Rand 39911631 oil filter element, begin by checking the compressor’s original parts documentation. Confirm the complete part number and identify the compressor model and serial number to avoid ordering a filter intended for a different production configuration.

For industrial spare-parts procurement, verify the filter’s dimensions, mounting thread, sealing arrangement, filtration specifications, and product condition. If the item is supplied as an original equipment part or an aftermarket replacement, make sure the product description clearly identifies its status.

For maintenance planning, record operating hours and filter replacement dates. Inspect the used filter and surrounding lubrication circuit for unusual contamination, metal particles, leakage, or abnormal pressure-drop conditions. Repeatedly contaminated filters may indicate a broader lubrication or equipment issue that requires investigation.

When replacing the filter, follow the compressor manufacturer’s shutdown, depressurization, installation, and restart procedures. Correct installation and scheduled replacement help maintain oil cleanliness and reduce avoidable maintenance problems.

Conclusion

The Ingersoll Rand 39911631 Oil Filter Element is a replacement filtration component for compatible industrial air compressor lubrication systems. By removing contaminants from circulating compressor oil, it helps maintain lubrication-system cleanliness and supports the protection of internal compressor components.

For maintenance and procurement applications, accurate part-number identification is essential. Buyers should confirm the compressor model and serial number, compare the filter’s physical dimensions and connections, and verify that the replacement meets the required filtration and pressure specifications.