Product Overview

The Ingersoll Rand 47588693001 39911631 Oil Filter is a compressor lubrication-system filter used to remove contaminants from the circulating compressor oil. It is a service component rather than a control or electrical device, and its condition directly affects the cleanliness of the lubricant flowing through the compressor.

During normal operation, compressor oil can collect fine particles, wear debris, and other contaminants generated within the lubrication and compression system. The oil filter captures these contaminants before the oil continues through the circuit, helping maintain suitable lubrication conditions for internal components.

For an industrial air compressor, the oil filter should be considered together with the compressor oil, oil cooler, oil separator, and other lubrication-system components. A restricted or incorrectly installed filter can affect oil circulation and should therefore be addressed as part of routine compressor maintenance.

The 47588693001 / 39911631 identification should be checked against the specific compressor configuration before ordering a replacement, particularly when servicing older equipment or machines that have undergone previous maintenance modifications.

Technical Specifications

Product Features

The 47588693001 / 39911631 oil filter is intended to maintain cleaner circulating lubricant within compatible compressor systems.

Key characteristics include:

• Ingersoll Rand compressor oil filter
• Part numbers 47588693001 and 39911631
• Designed for compressor lubrication systems
• Removes contaminants from circulating compressor oil
• Helps protect oil-lubricated internal components
• Suitable for scheduled compressor maintenance
• Intended as a replacement service component
• Used within the compressor oil circuit
• Supports cleaner lubricant circulation
• Suitable for industrial compressed-air equipment

Oil filtration is only one part of compressor maintenance. The condition and specification of the compressor oil, separator, oil cooler, seals, and related components should also be considered when evaluating lubrication-system performance.

Working Principle

The oil filter is installed in the compressor’s lubrication circuit:

Oil Reservoir / Separator → Oil Filter → Lubricated Compressor Components → Oil Return → Oil Circuit

During compressor operation, circulating oil passes through the filter element. Contaminants suspended in the oil are retained by the filter media while the filtered lubricant continues through the intended oil circuit.

The purpose is not simply to make the oil visually cleaner. Maintaining appropriate oil cleanliness helps reduce the amount of abrasive contamination reaching components that depend on continuous lubrication.

As contamination accumulates, the pressure difference across the filter can increase. A filter that has reached its service limit may therefore affect oil circulation and should be replaced according to the compressor’s maintenance requirements.

This is why an oil filter should not be evaluated in isolation. Unusual filter loading may indicate excessive contamination, oil degradation, internal wear, or another underlying compressor condition.

Role in a Compressor Lubrication System

The 47588693001 / 39911631 serves as a filtration stage within the compressor oil circuit.

A simplified arrangement is:

Oil Circuit → Oil Filter → Compressor Lubrication Points → Compression System → Oil Return

The filter helps keep circulating oil within the required cleanliness condition as the compressor operates.

This is particularly important in oil-injected compressor systems, where lubricant performs several functions beyond basic lubrication. Depending on the compressor design, the oil may also participate in cooling and sealing during the compression process.

For maintenance engineers, this means an oil-filter problem can have consequences beyond the filter itself. Abnormal oil pressure, elevated temperature, unusual filter loading, or changes in compressor performance may require inspection of the wider lubrication circuit.

Industrial Applications

The Ingersoll Rand 47588693001 / 39911631 is intended for compatible industrial compressor maintenance applications.

Actual service requirements depend on compressor operating hours, oil condition, ambient environment, load profile, and the maintenance schedule used for the equipment.

Installation and Maintenance

Oil-filter replacement should be carried out with the compressor safely shut down and isolated. Because the oil circuit can remain hot and pressurized after operation, sufficient time should be allowed for the equipment to reach a safe service condition.

Recommended maintenance checks include:

• Confirm the complete 47588693001 / 39911631 part number.
• Verify compatibility with the compressor model.
• Shut down and isolate the compressor.
• Allow oil temperature and pressure to reach a safe service condition.
• Inspect the removed filter for abnormal contamination.
• Check the filter sealing surface.
• Inspect the filter housing for debris.
• Verify the replacement filter and seal are correctly positioned.
• Use the specified installation procedure.
• Check for oil leakage after startup.
• Monitor oil pressure after replacement.
• Check compressor operating temperature.
• Record filter replacement date and operating hours.
• Inspect the removed filter if abnormal contamination is suspected.

A filter that becomes heavily contaminated before the expected maintenance interval should not simply be replaced repeatedly without investigation. Excessive debris can indicate oil degradation, internal component wear, contamination entering the circuit, or an underlying compressor problem.

Related Components

The oil filter forms part of a larger compressor lubrication and air-treatment system.

Correct operation depends on the complete lubrication circuit rather than the oil filter alone.

Recommended Related Models

When selecting replacement compressor filters, the compressor model and original service-part identification should take priority over physical similarity.

A replacement oil filter should not be selected solely by external dimensions. Thread configuration, sealing arrangement, filtration characteristics, pressure requirements, and compressor compatibility are all important.

Key Advantages

• Ingersoll Rand compressor oil filter.
• Part numbers 47588693001 / 39911631.
• Intended for compressor lubrication-system filtration.
• Helps remove contaminants from circulating compressor oil.
• Supports cleaner lubricant circulation.
• Helps protect oil-lubricated compressor components.
• Suitable for scheduled compressor maintenance.
• Applicable to industrial compressed-air equipment.
• Useful for replacement and service applications.
• Dimensions of 290 × 50 × 119 mm.
• Weight of 2.27 kg.

Technical FAQs

What is the function of the 39911631 oil filter in a compressor?

The 39911631 oil filter is used to filter circulating compressor lubricant, retaining contaminants before the oil continues through the lubrication circuit. Its function is different from an intake air filter or an air/oil separator.

What could cause an oil filter to load with contaminants unusually quickly?

Rapid contamination can be associated with degraded oil, excessive internal wear, contamination within the lubrication circuit, unsuitable service conditions, or an abnormal compressor operating condition. Replacing the filter without investigating the cause may only provide a temporary solution.

Why should the compressor be allowed to cool and depressurize before oil-filter service?

The lubrication circuit can contain hot oil and residual pressure immediately after operation. Servicing the filter before the system reaches a safe condition can create burn, pressure-release, and oil-spill hazards. The compressor’s established isolation and maintenance procedure should be followed.

Can the 47588693001 39911631 oil filter be replaced using another filter with the same physical dimensions?

Not necessarily. Physical dimensions alone do not establish compatibility. The replacement must also match the compressor’s filter interface, sealing arrangement, filtration requirements, pressure conditions, and service specification.