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 / 3-month service interval.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Product Overview
47701891001 is the intake air filter element for Ingersoll Rand screw air compressors, replacing the previous part number 39903281. Both numbers refer to the same element; older drawings and spare parts lists frequently show 39903281.
This element sits inside the external intake filter assembly, upstream of the airend inlet, and forms the first filtration stage on the intake path. As the compressor draws in outside air, dust, grit, fibers, and lint are carried with it; the filter media stops these contaminants before they reach the screw rotors. Once the element fails, unfiltered air enters the airend and accelerates wear on the rotors, bearings, and lubricant.
It is used on Ingersoll Rand 90–160 kW screw compressors, typically M350-3S, 125S/150S/175S/200S, and ML/MM/MH 90–160, MM90–110, M90/M110 platforms. This power band belongs to the VPeX platform in the Ingersoll Rand range. Same-power NG R-Series and larger frames such as M250 use different air filter part numbers and cannot be cross-fitted (see cross-platform table below).
Key Specifications
| Item | Value |
|---|---|
| Part Number | 47701891001 |
| Previous PN | 39903281 |
| Product Name | Air Filter Element |
| Brand | Ingersoll Rand |
| Power Band | 90–160 kW |
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% (for particles ≥5 μm) |
| Dimensions | Approx. 380 mm OD, 178 mm overall height |
| Recommended Replacement | 2000 hours or 3 months |
Technical Specifications
1. Filtration 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; HVAC classes such as G4 / F7 do not apply |
| Dust Holding Capacity | Directly related to site dust concentration; no universal nominal value. Use intake differential pressure gauge reading as the criterion |
Filtration rating and efficiency must be read together. A filter with high rating but low dust holding capacity will see restriction rise quickly, require frequent replacement, and cost more over the full cycle. This element is designed to maintain sufficient dust holding space at 5–10 μm rating for continuous-duty 90–160 kW compressors.
2. Flow and Restriction
| Parameter | Value / Note |
|---|---|
| Rated Air Flow | Must not be lower than compressor rated intake flow; 90–160 kW units typically draw around 15–27 m³/min, based on compressor displacement with correction for intake temperature and altitude |
| Initial Pressure Drop | Approx. 0.3–0.5 kPa with a clean new element |
| Operating Differential Range | Rises progressively with dust load; typical operating range approx. 0.5–1.5 kPa |
| Alarm / Final Resistance | Typical replacement threshold approx. 1.5–2.5 kPa; always confirm with the compressor intake vacuum / differential pressure gauge |
| Pressure Drop vs Energy | Each 1 kPa increase in intake restriction raises the compression ratio by about 1%, increasing compressor energy consumption by about 1.0% |
Pressure drop vs energy relationship (theoretical calculation 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 rises by more than 2 kPa, increasing compressor energy consumption by roughly 2%. Units such as 125S–200S and M350-3S typically run continuously, and this energy difference usually exceeds the price of the element itself — running past the restriction limit is not economical.
3. Dimensions and Installation
| Parameter | Value / Note |
|---|---|
| Dimensions | Approx. 380 mm OD, 178 mm overall height (verify against old part before ordering) |
| Effective Filter Area | Depends on pleat count and depth; measure the old part |
| Pleat Count / Spacing | Varies by production batch and media configuration; count on the old part |
| Mounting Interface | Cylindrical insert type; secured by end cap compression inside the intake filter assembly |
| Sealing | Face or radial seal; seal body may be molded with the end cap or fitted separately |
Measurement checklist (recommended before ordering a replacement):
| Measurement | Note |
|---|---|
| Outer Diameter | Outer edge diameter of the filter media |
| Inner Diameter | Center passage diameter |
| Overall Height | Total height including end caps |
| Seal 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. The dimensions on this page are for preliminary comparison; always confirm against the old part.
4. Material Construction
| Component | Material | Note |
|---|---|---|
| Filter Media | Cellulose (wood pulp) fiber paper, pleated | Depth filtration; captures particles progressively through the fiber layers |
| Media Weight | Approx. 130 g/m² | Determines burst strength and dust holding space |
| Inner / Outer Support | Galvanized steel perforated cage | Dual-side support prevents media collapse under vacuum |
| End Caps | Metal or polyurethane end caps | Bonded to media and act 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 cage, seals edges |
5. Operating Conditions
| Parameter | Value / Note |
|---|---|
| Operating Temperature | -10 °C to +80 °C |
| Relative Humidity | ≤90% RH (non-condensing) |
| Burst / Collapse Pressure | Standard design withstands at least 5 kPa differential across the media 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 plants), media strength drops when wet, and oil mist causes mud-like buildup on the media surface. Both conditions significantly shorten actual service life and require shorter inspection intervals.
6. 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); time limit also shortened |
| Shelf Life | Use within 24 months; store in dry, ventilated, dark conditions; avoid moisture and compression deformation |
| Replacement Criteria | Intake differential pressure gauge reading exceeds limit, or media shows damage, debonding, or flattened seal |
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 running hours are not reached, units with long shutdowns or intermittent operation still require periodic replacement.
7. 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 | Chinese national standard for air filters; often referenced in domestic procurement and acceptance |
| ISO 8573-1 | Compressed air quality classes; used to describe overall compressor supply quality |
| Note | ISO 2941 / 2942 / 2943 / 3723 / 3724 series are hydraulic filter standards, and ISO 16889 multi-pass method applies to liquid filtration; neither applies to air filter elements and should not be used as performance basis for air filters |
Standard Maintenance and Installation Steps
Step 1: Confirm compressor status and spare parts. Check the compressor nameplate model and power, confirm the new element matches the old part number. Prepare new element, clean cloth, and necessary tools.
Step 2: Shut down, depressurize, and disconnect power. Follow shutdown procedure, wait for full depressurization. Disconnect main power and apply lockout/tagout. This is mandatory and must not be skipped.
Step 3: Verify the old part before starting work. Before opening the intake filter assembly, read the part number stamped on the old element end cap and note its position. Confirm it matches the ordered part before disassembly. Multiple intake configurations exist in the same power band; this step is critical for error prevention.
Step 4: Remove and inspect the old element. Lift out the old element vertically and observe dust distribution and media condition. Criteria: if media shows damage, holes, end cap debonding, or flattened seal, replace immediately even if the service interval has not been reached. If the outer surface has black oily sludge, intake oil mist is abnormal and upstream conditions should be checked.
Step 5: Clean the assembly interior. Wipe the inner walls and bottom with a lint-free cloth. Do not blow compressed air into the assembly — this drives dust into the intake duct. Criteria: no loose dust on inner walls, seal surface flat and free of debris.
Step 6: Install the new element. Insert the new element in the same orientation and position as the old one, paying attention to seal face direction and compression method. Criteria: element sits without movement, seal face evenly compressed around circumference.
Step 7: Reassemble and confirm sealing. Replace cover or clamp and tighten evenly as required. Check that the intake vacuum gauge pressure line is clear — a blocked line gives a false clean reading, a common source of misjudgment.
Step 8: Test run and record. Reset the maintenance timer, start the compressor unloaded, and observe intake vacuum gauge reading and running sound. Criteria: vacuum gauge stable within allowed range, no abnormal whistling (whistling often indicates seal bypass). Record the running 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 part number for this item. Ingersoll Rand transitioned a group of M-series air filters from old numbers to 11-digit new numbers; 39903281 corresponds to new number 47701891001. Old drawings and spare parts lists show 39903281; the two can be treated as two numbers for the same element. If the old part is stamped 39903281, you can order directly under this part number.
Q2: Can 47701890001 and 47701891001 be interchanged?
No. Both belong to the same number-change group and share the same name (air filter element), but they correspond to different intake configurations. Verify by the stamped part number on the old element itself; do not order based on similar names. If the old number is illegible, provide a photo of the end cap and the compressor nameplate, and we will cross-reference by part number.
Q3: How many elements per compressor?
Depends on the intake assembly configuration: 125S–200S series uses 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 shortages 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. The final criterion is the intake differential pressure gauge reading; replace when the reading exceeds the limit, regardless of running hours.
Q5: Why are dimensions given as approximate values?
Dimensions vary slightly by production batch and media configuration, and multiple intake assembly configurations exist in the same power band. This page gives approx. 380 mm OD and 178 mm overall height for preliminary comparison. Before formal procurement, measure the old part's OD, ID, overall height, and seal type, or provide old part photos and compressor nameplate; we will cross-reference by part number.
Q6: What happens when intake restriction rises?
First, energy consumption increases: each 1 kPa increase in intake restriction raises compression ratio by about 1%, increasing energy consumption by about 1%. Second, intake volume decreases, reducing compressor discharge flow. Continuing to use an element past the replacement threshold saves less on the element than the extra electricity cost. The difference is more pronounced on higher-power units.
Q7: Can I use an alternative element?
Yes, but verify three things: filtration rating, end cap seal type, and dimensions. If an alternative does not match the original seal configuration, bypass occurs and unfiltered air enters the airend, accelerating rotor and bearing wear. When purchasing alternatives, provide old part 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 check: element seating, seal face for flattening or inversion. Also check the intake vacuum gauge pressure line for blockage to avoid misjudgment.
Q9: How to replace on two-stage intake systems?
If the intake assembly is two-stage (primary + safety), the two stages use different part numbers and positions and cannot be interchanged. Replace in outside-to-inside order and verify each stage against the ordered part number. The safety element acts as a backup if the primary fails and should not be left unchanged just because it looks clean.
Q10: Storage requirements for spare parts?
Store in a dry, ventilated, dark place; avoid moisture, rain, and heavy compression. Moisture reduces media strength, and compression deformation damages the seal fit. Use within 24 months.
Q11: How to confirm correct installation?
Check two things after installation: first, intake differential pressure gauge reading should drop and stabilize in the low range; second, no abnormal whistling and no drop in discharge flow. If the reading is high or whistling occurs, sealing or installation is faulty — stop and recheck immediately.
Compatible Models
This element fits Ingersoll Rand 90–160 kW screw air compressors, a power band belonging to the VPeX platform in the Ingersoll Rand range.
| Item | Content |
|---|---|
| Compressor Type | Screw air compressor (oil-lubricated) |
| Platform | VPeX platform (90–160 kW band) |
| Power Band | 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 Band Confirmation | Check compressor nameplate model and power, and confirm with old part number |
| Typical Applications | Manufacturing, textile, chemical, building materials, pneumatic conveying, and other continuous air demand applications |
Cross-platform comparison (to prevent mis-purchase; all below are other platform part numbers, not interchangeable with this item):
| Platform | Power Band | Air Filter PN | Note |
|---|---|---|---|
| ML/MM/MH/MU 90–160 | 90–160 kW | 39903291 | Same power band but different intake platform |
| M250 / ML250 | Approx. 40 m³/min | 39903265 / 42852129 | Larger frame platform, not interchangeable |
| ML/MM/MH/MU 55–75 | 55–75 kW | 39708466 | Lower power band, different part number |
| NG R-Series 90–160 kW | 90–160 kW | Order by model | New-generation R-series platform, air filter PN corresponds to that platform |
Why verify by part number rather than compressor model: Ingersoll Rand compressors in the same power band may have multiple intake filtration configurations — different platforms, production batches, or presence of a pre-filter layer 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, select parts based on: 1) the part number stamped on the old element, 2) the compressor nameplate, 3) the installation position.
Three-Step Verification
- Read the part number stamped on the old element end cap or cage and compare with the ordered part number (old and new numbers refer to the same part; see Section 2).
- Read the compressor nameplate model and power to confirm it falls within 90–160 kW.
- Confirm the old part's installation position (single-stage / two-stage, primary / safety) and quantity per unit.
If the three steps remain inconclusive, provide compressor nameplate photo, old part photos (including stamped part number), and installation position description; we will cross-reference by part number before confirming.
Related Components
Components in the same intake and lubrication system with matching maintenance intervals:
| Component | Part Number | Function | Inspection Points |
|---|---|---|---|
| Air Filter Element (same batch) | 47701890001 | Another intake filter element with the same name but different part number, for a different configuration in the same series | Verify separately by part number; not interchangeable |
| Air Filter Assembly (housing) | — | Housing assembly that holds and secures the intake element | Check clamps, seal surfaces, and outlet end for deformation or corrosion |
| Safety Element (two-stage intake) | — | Backup if primary fails, prevents unfiltered air from entering airend | Inspect together with primary; do not leave unchanged just because it looks clean |
| Intake Differential Pressure Gauge / Vacuum Gauge | — | Shows intake restriction; final criterion for replacement interval | Check pressure line for blockage regularly; blockage gives false clean reading |
| Seals | — | Prevents bypass between element and assembly | Inspect with element; replace if flattened, hardened, or missing |
| Oil Filter Element | — | Filters wear debris and sludge from lubricant, protects rotors and bearings | Inspect 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, provides lubrication and sealing | Test oil per compressor requirements; avoid mixing with other brands |
Recommended replacement set: Air filter, oil filter, and oil separator share the 2000-hour interval; replace together to avoid staggered maintenance cycles. In heavy dust environments, prioritize adding a high-dust pre-filter layer — pre-filter cost is far lower than the main element and replacement is faster.
For specific part numbers: Items marked "—" above should be confirmed from the compressor's parts manual. The 90–160 kW band uses different part numbers by model; match to your specific machine and do not cross power bands.