Product
Ingersoll Rand 47701891001 Air Filter Element | Replaces 39903281
Ingersoll Rand 47701891001 air filter element (previous PN 39903281) for 90–160 kW VPeX screw compressors including M350-3S and 125S–200S. 5–10 μm filtration, ≥98% efficiency, approx. 380 mm OD × 178 mm height, 2000 h or 3-month service interval. Export-ready with full traceability.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Product Overview
The 47701891001 is the intake air filter element for Ingersoll Rand screw air compressors in the 90–160 kW range. Its previous OEM part number is 39903281; both numbers refer to the same element. Older drawings and spare parts lists typically show 39903281.
The element sits inside the external intake filter assembly, upstream of the airend inlet. It is the first filtration stage in the intake path, trapping dust, grit, fibers and debris before they reach the screw rotors. A failed element allows unfiltered air into the airend, accelerating wear on rotors, bearings and lubricant.
Typical models include M350-3S, 125S/150S/175S/200S, ML/MM/MH 90–160, MM90–110 and M90/M110. This power range belongs to the Ingersoll Rand VPeX platform. NG R-Series and larger M250 models use different air filter part numbers and are not interchangeable.
Specifications
| Item | Value |
|---|---|
| Part Number | 47701891001 |
| Previous OEM PN | 39903281 |
| Product Name | Air Filter Element |
| Brand | Ingersoll Rand |
| Power Range | 90–160 kW |
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% for particles ≥5 μm |
| Dimensions | Approx. 380 mm OD × 178 mm overall height |
| Service Interval | 2000 hours or 3 months |
Filter Performance
| Parameter | Value / Note |
|---|---|
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% for particles ≥5 μm |
| Filter Class | Characterized per ISO 5011 by efficiency, restriction and dust holding capacity; not classified under HVAC systems (G4 / F7 etc.) |
| Dust Holding Capacity | Directly dependent on site dust concentration; no universal nominal value. Use intake differential pressure gauge reading as the criterion. |
Flow and Pressure Drop
| Parameter | Value / Note |
|---|---|
| Rated Air Flow | Must not be below compressor rated intake volume. 90–160 kW units typically draw approximately 15–27 m³/min; apply intake temperature and altitude corrections. |
| Initial Pressure Drop | Approx. 0.3–0.5 kPa for a clean new element |
| Operating Pressure Drop | Rises with dust loading; typical range approx. 0.5–1.5 kPa |
| Alarm / Final Pressure Drop | Typical replacement threshold approx. 1.5–2.5 kPa; final criterion is the intake vacuum / differential pressure gauge reading |
| Pressure Drop vs Energy | Each 1 kPa increase in intake restriction raises the compression ratio by approx. 1%, increasing compressor energy consumption by approx. 1.0% |
Pressure drop / energy relationship (theoretical, at 0.85 MPa discharge gauge pressure):
| Intake Restriction | Compression Ratio | Energy Increase |
|---|---|---|
| 0 kPa (new element) | 9.39 | Baseline |
| 0.5 kPa | 9.44 | +0.5% |
| 1.0 kPa | 9.49 | +1.0% |
| 1.5 kPa | 9.53 | +1.5% |
| 2.0 kPa | 9.58 | +2.0% |
| 2.5 kPa | 9.63 | +2.5% |
From installation to replacement threshold, intake restriction typically rises by more than 2 kPa, increasing compressor energy consumption by approximately 2%. For continuously running units such as 125S–200S and M350-3S, this energy penalty usually exceeds the element price, making calendar-based extended use uneconomical.
Dimensions and Installation
| Parameter | Value / Note |
|---|---|
| Dimensions | Approx. 380 mm OD × 178 mm overall height (verify against old element before ordering) |
| Effective Filter Area | Depends on pleat count and depth; confirm from old element measurements |
| Pleat Count / Spacing | Varies by production batch and media configuration; verify by physical count of old element |
| Mounting Interface | Cylindrical insert type; secured by end cap compression inside the intake filter assembly |
| Sealing | Face or radial seal; seal body either integrally molded with end cap or separately mounted |
Recommended measurements from old element before ordering:
| Measurement | Note |
|---|---|
| Outer Diameter | Filter media outer edge diameter |
| Inner Diameter | Center passage diameter |
| Overall Height | Including end caps |
| Seal Face Position and Type | Face / radial, and seal cross-section shape |
| Mounting Interface | Clamp, bolt hole or quick-fit configuration and dimensions |
Outer diameter, overall height and seal type directly affect fit and bypass prevention. Dimensions shown are for preliminary comparison; final reference must be the old element measurement.
Materials of Construction
| Component | Material | Note |
|---|---|---|
| Filter Media | Wood pulp fiber filter paper (cellulose media), pleated construction | Depth filtration; captures particles progressively through fiber layers |
| Media Weight | Approx. 130 g/m² | Determines burst strength and dust holding space |
| Inner / Outer Support | Galvanized steel perforated cage | Double-sided support prevents media collapse under negative pressure |
| End Caps | Metal or polyurethane end caps | Bonded to media; also serves as seal carrier |
| Seal | Polyurethane or nitrile rubber seal body | Prevents bypass between element and assembly |
| Adhesive | Polyurethane adhesive | Fixes media to end caps and support cage; seals edges |
Operating Conditions
| Parameter | Value / Note |
|---|---|
| Operating Temperature | -10 °C to +80 °C |
| Relative Humidity | ≤90% RH (non-condensing) |
| Burst / Collapse Pressure | Standard design withstands differential pressure across media of not less than 5 kPa without deformation |
| Special Function | Intake filtration for high-power units; pre-filter layer can be added in heavy dust environments to extend main element life |
In high-humidity, high-dust or oil-mist environments (textile, foundry, food, cement sites), media strength decreases with moisture and oil mist causes surface mudding. Both conditions significantly shorten actual service life and require shorter inspection intervals.
Service Life and Maintenance
| Parameter | Value / Note |
|---|---|
| Service Life | 2000 hours or 3 months, whichever comes first |
| High Dust Environment | Reduce hours accordingly (e.g., approx. 1500 hours); calendar limit also shortened |
| Shelf Life | Use within 24 months; store in dry, ventilated, light-protected area; avoid moisture and compression deformation |
| Replacement Criteria | Intake differential pressure gauge reading exceeds limit, or media damage, adhesive failure, or seal face compression |
Both the 2000-hour and 3-month limits apply, whichever comes first. The calendar limit exists because media absorbs moisture and ages over time; even if operating hours are not reached, units with long shutdowns or intermittent operation still require scheduled replacement.
Standards
| Standard | Note |
|---|---|
| ISO 5011 | Intake filter efficiency and dust holding capacity test method; basis for performance characterization of this type of air filter element |
| GB/T 14295 | National air filter standard; often referenced for domestic procurement and acceptance |
| ISO 8573-1 | Compressed air quality classes; used to describe complete compressor supply air quality |
| Note | ISO 2941 / 2942 / 2943 / 3723 / 3724 series in replacement part documentation are hydraulic filter standards; ISO 16889 multi-pass method also applies to liquid filtration. Neither applies to air filter elements and should not be used as performance basis. |
Installation Steps
- Confirm compressor status and spare part. Check compressor nameplate model and power; confirm the new element matches the old part number. Prepare new element, clean cloth and necessary tools.
- Shut down, depressurize, disconnect power. Follow shutdown procedure and wait for full depressurization. Disconnect main power and apply lockout/tagout. This is mandatory.
- Verify old element before proceeding. Before opening the intake filter assembly, read the part number stamped on the old element end cap and note its installation position. Confirm it matches the ordered part. This step prevents errors where multiple intake configurations exist in the same power range.
- Remove old element and inspect. Remove vertically and observe dust distribution and media condition. Replace immediately if media is damaged, perforated, end cap adhesive has failed, or seal face is compressed—even if service interval has not been reached. Black oily sludge on the surface indicates abnormal oil mist in intake air; check upstream environment.
- Clean assembly interior. Wipe inner walls and bottom with a lint-free cloth. Do not blow compressed air directly into the assembly—this drives dust into the intake passage. Criterion: no loose dust on inner walls; seal face flat and free of debris.
- Install new element. Insert in the same orientation and position as the old element; observe seal face direction and compression method. Criterion: no movement after seating; seal face evenly compressed around circumference.
- Reassemble and confirm seal. Replace cover or clamp and tighten evenly per compressor requirements. Check intake vacuum gauge pressure line for blockage—a blocked line gives a false clean reading and is a common source of misjudgment.
- Test run and record. Reset maintenance timer, start compressor at no load, observe intake vacuum gauge reading and operating sound. Criterion: vacuum gauge stable within compressor allowable range; no abnormal whistling (often indicates seal bypass). Record operating hours at replacement as the starting point for the next interval.
FAQ
Q1: Are 47701891001 and 39903281 the same part?
Yes. 39903281 is the previous OEM number for this part. Ingersoll Rand transitioned a batch of M-series air filters from old numbers to 11-digit new numbers; 39903281 corresponds to 47701891001. Old drawings and spare parts lists show 39903281. They are two numbers for the same element. If the old element is stamped 39903281, order by this part number directly.
Q2: Can 47701890001 and 47701891001 be interchanged?
No. Both are air filter elements with the same name from the same number transition, but they correspond to different intake configurations. Verify by the part number stamped on the old element. Do not order based on similar names. If the old number is illegible, provide end cap photos and compressor nameplate; we will cross-reference by part number.
Q3: How many elements per compressor?
Depends on the intake assembly configuration: 125S–200S series use 2 per unit; MM90–110 uses 1 per unit. Different production batches of the same model may vary. Confirm quantity from the compressor parts diagram or physical count to avoid shortage from assuming one per unit.
Q4: What is the replacement interval?
Standard interval is 2000 hours or 3 months, whichever comes first. In high-dust environments (cement, quarry, mining, metalworking), reduce hours to approximately 1500. Final criterion is the intake differential pressure gauge reading; replace when reading exceeds limit regardless of operating hours.
Q5: Why are dimensions given as approximate?
Dimensions vary slightly by production batch and media configuration, and multiple intake assembly configurations exist within the same power range. This page gives approx. 380 mm OD and 178 mm height for preliminary comparison. Before ordering, measure the old element outer diameter, inner diameter, overall height and seal type, or provide old element photos and compressor nameplate for cross-reference by part number.
Q6: What happens when intake restriction increases?
First, energy consumption rises: each 1 kPa increase in intake restriction raises compression ratio by approx. 1% and compressor energy consumption by approx. 1%. Second, intake volume decreases, reducing compressor discharge volume. Continuing to use beyond the replacement threshold saves less on element cost than the extra electricity consumed. The difference is more significant on higher-power units.
Q7: Can alternative parts be used?
Yes, but verify three items: filtration rating, end cap seal type, and dimensions. An alternative with a different seal type will cause bypass, allowing unfiltered air into the airend and accelerating rotor and bearing wear. When purchasing alternatives, provide old element photos and this part number.
Q8: What if abnormal whistling occurs after installation?
Whistling usually indicates seal bypass: element not fully seated, seal face deformed, or seal missing. Stop the compressor immediately and inspect: element seating, seal face compression or inversion. Also check the intake vacuum gauge pressure line for blockage to avoid misjudgment.
Q9: How to replace when the compressor has two-stage intake?
If the intake assembly is two-stage (main filter + safety filter), the two elements have different part numbers and positions and are not interchangeable. Replace in "outer first, inner second" order and verify each element against the ordered part number. The safety element provides backup if the main element fails; do not leave it unchanged long-term because it "looks clean."
Q10: Storage requirements?
Store in a dry, ventilated, light-protected area. Avoid moisture, rain and heavy compression. Moisture reduces media strength; compression deformation damages seal fit. Use within 24 months.
Q11: How to confirm correct installation?
Check two points after installation: intake differential pressure gauge reading should drop and stabilize at a low value; no abnormal whistling and no decrease in discharge volume. If reading is high or whistling occurs, sealing or installation is incorrect; stop immediately and re-inspect.
Compatible Models
This element fits Ingersoll Rand screw air compressors in the 90–160 kW range, which belongs to the VPeX platform.
| Item | Content |
|---|---|
| Compressor Type | Oil-lubricated screw air compressor |
| Platform | VPeX platform (90–160 kW range) |
| Power Range | 90–160 kW |
| Typical Models | M350-3S, 125S / 150S / 175S / 200S, ML/MM/MH 90–160, MM90–110, M90 / M110 |
| Quantity per Unit | 125S–200S series: 2 per unit; MM90–110: 1 per unit |
| Power Range Confirmation | Check compressor nameplate model and power; verify against old element part number |
| Typical Applications | Manufacturing, textile, chemical, building materials, pneumatic conveying and other continuous air applications |
Cross-platform comparison within the same power range (to prevent mis-purchase; all part numbers below are for other platforms and are not interchangeable with this part):
| Platform | Power Range | Air Filter Part Number | Note |
|---|---|---|---|
| ML/MM/MH/MU 90–160 | 90–160 kW | 39903291 | Same power range but different intake platform |
| M250 / ML250 | Approx. 40 m³/min | 39903265 / 42852129 | Larger model platform; not interchangeable |
| ML/MM/MH/MU 55–75 | 55–75 kW | 39708466 | Lower power platform; different part number |
| NG R-Series 90–160 kW | 90–160 kW | Order by model | New-generation R-Series platform; air filter part number corresponds to that platform |
Why part number verification is essential rather than model-based selection:
Multiple intake filter configurations exist within the same Ingersoll Rand power range: different platforms, different production batches, and whether a pre-filter layer is installed all change the intake assembly interface and element dimensions. In addition, a single compressor may use two elements with different part numbers (see FAQ Q9). Therefore, selection should be based first on the old element part number, second on the compressor nameplate, and third on installation position.
Three-Step Verification
- Read the part number stamped on the old element end cap or support cage and compare with the ordered part number (old number and this part number are the same element; see Specifications section).
- Read the compressor nameplate model and power; confirm it falls within the 90–160 kW range.
- Confirm the old element installation position (single-stage / two-stage, main filter / safety filter) and quantity per unit.
If still uncertain, provide compressor nameplate photo, old element photos (including stamped part number) and installation position description. We will cross-reference by part number and confirm.
Related Components
Components in the same intake and lubrication system with matching maintenance intervals:
| Component | Part Number | Function | Inspection Point |
|---|---|---|---|
| Air Filter Element (same batch) | 47701890001 | Another intake filter element with same name but different part number for another configuration in the same series | Verify separately against ordered part number; not interchangeable |
| Air Filter Assembly (housing) | — | Housing assembly that holds and secures the intake filter element | Check clamps, seal faces and outlet end for deformation or corrosion |
| Safety Filter Element (two-stage intake) | — | Backup if main filter fails, preventing unfiltered air from entering the airend | Inspect together with main filter; do not leave unchanged long-term because it looks clean |
| Intake Differential Pressure Gauge / Vacuum Gauge | — | Displays intake restriction; final criterion for replacement interval | Regularly check pressure line for blockage; blockage gives false clean reading |
| Seal | — | Prevents bypass between element and assembly | Inspect with element; replace if compressed, hardened or missing |
| Oil Filter Element | — | Filters wear particles and sludge from lubricant, protecting rotors and bearings | Inspect together with air filter; replace per compressor manual interval |
| Oil Separator Element | — | Separates oil mist from compressed air and returns oil; controls discharge oil carryover | Check oil return line for blockage during replacement |
| Lubricant (Ultra Coolant) | 38459582 | Standard Ingersoll Rand screw compressor coolant; lubricates and seals | Test oil per compressor requirements; avoid mixing with other brands |
Recommended combined replacement: air filter, oil filter and oil separator share the 2000-hour interval. Replace together to avoid maintenance interval misalignment. In heavy dust sites, install a high-dust pre-filter layer first; pre-filter cost is far below the main element and replacement is faster.
For specific part numbers: items marked "—" above should be confirmed from the compressor parts manual. In the 90–160 kW range, part numbers vary by model configuration and must correspond to the specific unit; do not use across power ranges.