Product Overview

The Ingersoll Rand 47588445001 48958201 Air Filter is an intake filtration component used in compatible rotary screw air compressor systems. It removes airborne dust and particulate contaminants before they enter the compressor, helping protect the air end and reduce contamination throughout the compressed air equipment.

In an industrial compressor installation, intake air quality directly affects the cleanliness of the internal compression system. Dust entering with ambient air can accumulate on internal surfaces, contribute to abrasive wear, and contaminate the compressor’s oil and air separation circuits. The intake filter acts as the first protective barrier against these particles.

The 48958201 element is identified in Ingersoll Rand maintenance parts listings as an air filter element and is included in certain compressor maintenance kits. Its radial-seal configuration is an important selection detail because the element must form the correct sealing interface with the intake housing. A filter that fits loosely or has an incompatible seal may allow unfiltered air to bypass the media.

As the compressor operates, the filter gradually collects airborne contaminants. In dusty production environments, the accumulation rate may increase, causing greater resistance to airflow. A heavily restricted filter can affect intake conditions and contribute to additional operating losses, making regular inspection and replacement part of routine compressor maintenance.

For example, a compressor supplying pneumatic tools in a metalworking facility may operate near machining processes that generate fine airborne particles. The intake filter helps prevent these contaminants from entering the screw air end, supporting the condition of internal components and reducing the likelihood of contamination-related maintenance.

The 47588445001 and 48958201 references should be checked against the compressor’s parts identification and installed filter arrangement before ordering. Filter media, sealing geometry, and housing compatibility matter alongside the part number. During replacement, the intake housing and sealing surface should also be inspected to ensure that the new element can perform its intended filtration function.

Technical Specifications

Product Features

• Intake air filtration: Captures airborne dust and particulate contaminants before they enter the compressor.
• Radial-seal configuration: Uses a sealing arrangement that must match the corresponding intake housing.
• Air-end protection: Helps reduce contamination-related wear on internal compression components.
• Controlled airflow: Allows incoming air to pass through the filtration media while retaining captured particles.
• Maintenance kit compatibility: The 48958201 element is listed among components used in certain Ingersoll Rand compressor maintenance kits.
• Contamination management: Helps limit the amount of dust entering the compressor’s internal circuits.
• Replacement serviceability: Supports scheduled filter replacement without automatically requiring replacement of the complete intake assembly.
• Housing interface: Requires correct seating and sealing to prevent unfiltered air bypass.
• Condition-based maintenance: Filter servicing can be assessed using operating hours, visible condition, and restriction indications where fitted.
• Part identification: Provides a specific reference for maintenance planning and replacement selection.

Working Principle

The 48958201 air filter works by passing incoming air through filtration media that captures airborne particulate matter. It is installed upstream of the compressor’s air end, where it reduces the amount of dust and debris entering the compression process.

Ambient Air → 48958201 Air Filter → Intake Valve → Rotary Screw Air End → Oil Separation System → Compressed Air Outlet

As air passes through the filter media, particles are retained within or on the surface of the material. The filtered air then travels through the intake system toward the screw elements. Captured contaminants remain in the filter until the element is replaced according to the applicable maintenance procedure.

Filter resistance changes as particulate matter accumulates. A relatively clean element allows air to pass with less resistance, while a heavily loaded element may produce a higher pressure drop. The effect on compressor performance depends on the degree of restriction, the compressor’s capacity, and its control arrangement.

The sealing interface is equally important. In a radial-seal design, the element must seat correctly against the corresponding housing connection. If the seal is damaged, incorrectly positioned, or incompatible with the housing, unfiltered air may enter downstream of the media. This can undermine the protection provided by an otherwise serviceable filter.

The filter should be selected according to the compressor’s specified configuration rather than dimensions alone. Filtration characteristics, sealing geometry, airflow requirements, and housing design all influence compatibility. The 48958201 reference is also associated with certain maintenance kits, but that association does not establish suitability for every Ingersoll Rand compressor.

During servicing, the removed element should be examined for uneven loading, deformation, moisture exposure, or media damage. The intake housing should be cleaned carefully so that accumulated dust does not enter the clean side of the system. After installation, the housing must be secured and the sealing interface checked before the compressor returns to normal operation.

Role in an Ingersoll Rand Compressor Intake System

The 48958201 air filter is positioned at the beginning of the compressor airflow path. It protects downstream components by reducing particulate contamination before air enters the screw compression stage.

Ambient Air → Intake Filter Housing → Air Filter Element → Intake Valve → Screw Air End → Oil Separator → Minimum Pressure Valve → Aftercooler

Industrial Applications

Installation and Maintenance

1. Verify the part reference: Confirm 47588445001 and 48958201 against the compressor identification, maintenance records, and installed intake filter.
2. Check the intake configuration: Confirm that the replacement uses the correct radial-seal arrangement and matches the housing connection.
3. Review filter condition: Check available restriction indications, operating hours, and maintenance history before determining whether replacement is required.
4. Isolate the compressor: Stop the equipment and follow the applicable site safety procedure before opening the intake assembly.
5. Document the original installation: Record the element orientation and sealing arrangement before removing the existing filter.
6. Remove the used element carefully: Prevent accumulated dust from falling into the clean side of the intake housing or downstream ducting.
7. Inspect the housing: Check for contamination, damage, corrosion, or deformation that could affect airflow or the filter’s seating.
8. Examine the sealing interface: Ensure that the radial-seal contact area is clean and free from defects that could permit air bypass.
9. Inspect the replacement element: Confirm the part number and check the filtration media and sealing surfaces for damage before installation.
10. Fit and secure the element: Follow the applicable service instructions to ensure correct seating and closure of the intake housing.
11. Check the intake system after servicing: Where permitted, verify that the assembly is secure and that available restriction indicators or operating readings are within the expected range.
12. Record maintenance findings: Document the installed part number, operating hours, observed contamination, restriction readings, and any housing or sealing defects.

Related Components

Recommended Related Models

Key Advantages

• Helps reduce airborne particulate contamination entering the compressor.
• Supports protection of internal compression components against dust-related wear.
• Uses a radial-seal configuration for the corresponding intake housing.
• Supports scheduled maintenance through a clearly identified replacement part.
• Helps maintain intended airflow when the filter remains within its service limits.
• Supports effective filtration when correctly seated and sealed.

Technical FAQs

Why is the radial-seal configuration important when selecting the 48958201 filter?

The radial seal must match the corresponding intake housing so that air cannot bypass the filtration media. An element with a different sealing arrangement may appear similar but fail to establish the required seal.

Is the 48958201 element included in any Ingersoll Rand maintenance kits?

The part number appears in certain Ingersoll Rand compressor maintenance kit listings. Kit contents and equipment compatibility vary, so the maintenance kit reference should be checked against the compressor model and service interval.

What can cause a new air filter to become restricted prematurely?

Heavy airborne dust, an unsuitable service interval, moisture exposure, or contamination within the intake housing can contribute to early restriction. The operating environment and intake arrangement should be reviewed if a replacement element loads unusually quickly.

How can intake air bypass be identified during maintenance?

Inspect the radial-seal contact area, housing condition, element seating, and connections downstream of the filter. Dust deposits on the clean side of the housing may indicate a sealing problem, although the full intake path should be inspected to determine the cause.