Product
Ingersoll Rand 47742049001 Air Filter Element for MM350-2S Two-Stage Compressor
Replacement air filter element for the Ingersoll Rand MM350-2S two-stage screw compressor (350 kW, 8.5 bar(g), 64.1 m³/min). 5–10 μm filtration, 2000-hour or 3-month service interval. Verify against the part number on the old element before ordering.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Product Overview
47742049001 is the intake air filter element for the Ingersoll Rand MM350-2S two-stage screw air compressor. It sits inside the external air filter housing, upstream of the airend intake. Ambient air is drawn through the element first; dust, grit and fibres are retained on the media surface and in its depth, so only clean air reaches the airend.
One point needs to be stated clearly on this page. The MM350-2S intake system does not use a single filter part number. Air filter configuration varies with machine version and build, and several element part numbers run in parallel for the same model. This page therefore makes no assumption that one element covers the whole machine. Before ordering, confirm the part number stamped on the old element and its mounting position rather than relying on the machine model alone. This is the single most common source of error when buying parts for high-capacity compressors of this class.
Duty context: the MM350-2S is a 350 kW two-stage machine delivering 64.1 m³/min at 8.5 bar(g), a high-volume intake duty. The element processes far more air per unit of time than a small or mid-size machine, so media area and structural rigidity must match that flow.
Core Specifications
| Item | Value |
|---|---|
| Part number | 47742049001 |
| Description | Air Filter Element |
| Brand | Ingersoll Rand |
| Application | MM350-2S two-stage screw compressor (350 kW) |
| Machine FAD | 64.1 m³/min @ 8.5 bar(g) |
| Construction | Dry pleated element |
| Dimensions | Confirm by measuring the old part |
| Filtration rating | 5–10 μm |
| Recommended service interval | 2000 hours or 3 months |
Technical Parameters
1. Filtration Performance
| Parameter | Value / Note |
|---|---|
| Filtration rating | 5–10 μm |
| Filtration efficiency | ≥98% for particles ≥5 μm |
| Filter classification | HVAC classification (EN 779) does not apply; intake filters are characterised to ISO 5011 by efficiency, restriction and dust holding capacity |
| Dust holding capacity | — |
2. Flow and Restriction
| Parameter | Value / Note |
|---|---|
| Rated air flow | Matched to MM350-2S intake (machine FAD 64.1 m³/min @ 8.5 bar) |
| Initial pressure drop | Approx. 0.5–1.0 kPa (approx. 50–100 mmH₂O) |
| Operating differential range | From new-element restriction to the blockage alarm point |
| Alarm / final restriction | Per the machine intake restriction indicator or controller intake vacuum alarm |
| Restriction vs. energy | Each 1 kPa rise in intake restriction increases machine energy consumption by roughly 1% |
Restriction and energy consumption. Rising intake restriction lowers intake pressure and density; the machine must work harder to hold set discharge pressure and flow, and specific power rises. Calculated on compression ratio at 0.8 MPa discharge and 101.3 kPa atmospheric:
| Intake restriction | Compression ratio | Relative energy increase |
|---|---|---|
| 0 kPa (new element) | 8.90 | Baseline |
| 2 kPa | 9.08 | +2.0% |
| 4 kPa | 9.26 | +4.1% |
| 6 kPa | 9.45 | +6.2% |
What this means in practice: the MM350-2S is a 350 kW continuous-duty machine. At 8000 operating hours per year, energy consumption climbs by roughly 6% between a new element and a badly blocked one — electricity cost far exceeding the price of the element. On machines of this size, replace on intake restriction, not on the calendar.
3. Construction and Installation
| Parameter | Value / Note |
|---|---|
| Construction | Dry pleated cartridge element |
| Installation interface | Fits into the air filter housing, axially compressed |
| Sealing | Face compression seal (per actual part) |
On dimensions: this part number belongs to a newer 11-digit series; no reliable dimensional data is published in OEM or third-party sources. Confirm against the old part before ordering — measure outer diameter, inner or mounting diameter and overall height, or send a photo with measurements for verification. Other element part numbers for the same machine do not share these dimensions; do not carry dimensions across part numbers.
4. Materials
| Parameter | Value / Note |
|---|---|
| Media | Imported wood-pulp filter paper (industry-typical HV or Ahlstrom media) |
| Media weight | Approx. 130 g/m² |
| Support | Galvanised perforated steel cage (inner cage and outer guard) |
| End caps | Metal end caps (galvanised steel) with polyurethane bonding |
| Seal | Face seal ring, oil-resistant rubber |
| Bonding | Polyurethane (PU) hot-melt adhesive |
5. Operating Tolerance
| Parameter | Value / Note |
|---|---|
| Operating temperature | −10 to +100 °C |
| Relative humidity | ≤80% RH, no condensation |
| Burst strength | Media burst strength approx. 200–400 kPa (per ISO 2758) |
| Collapse resistance | Element must withstand the machine intake alarm differential without collapsing |
| Special features | No flame-retardant, anti-static or special coating designation for this part number |
6. Service Life and Storage
| Parameter | Value / Note |
|---|---|
| Service life | 2000 hours or 3 months, whichever comes first |
| High-dust environments | Replace when the intake restriction reading enters the alarm band |
| Shelf life | Approx. 2–3 years, unopened, dry and ventilated storage |
7. Applicable Standards
| Item | Detail |
|---|---|
| Product standard | ISO 5011 (inlet air cleaning equipment for internal combustion engines and compressors — performance testing), assessed on efficiency, restriction and dust holding capacity |
| Commonly cited test standards | ISO 2941 / 2942 / 2943 / 3723 / 3724 / 3968 |
| Note on applicability | The ISO 29xx / 37xx series are general test methods for hydraulic fluid power filter elements. Where a supplier can only cite hydraulic filter standards, request ISO 5011 data or the OEM specification sheet. |
Installation and Maintenance Steps
The external filter housing on a large two-stage machine is substantial; allow 30–40 minutes and work with two people.
Shut down, confirm zero pressure, lock out. Isolate the main power and apply lockout/tagout, then open the receiver drain valve to release pressure. Criterion: controller shows zero system pressure and no residual air flow is audible.
Verify the part number before touching anything. Confirm which position is being replaced. Criterion: read the part number on the old element and compare it digit by digit with the number being ordered. Do not rely on the part name or machine model alone. Where several intake element numbers exist for one model, fitting the wrong one causes poor sealing or prevents seating altogether.
Open the air filter housing. Release the cover clamps or fasteners in diagonal sequence. Criterion: cover undistorted, clamps not seized. On large covers, support the cover until the last fastener is released.
Remove the old element and inspect it. Withdraw the element vertically, using lifting assistance given its size and weight. Check dust distribution and media condition. Criterion: even grey-brown dust loading is normal; oily residue on the surface indicates oil carryover upstream and needs investigation; torn media, debonded end caps or a flattened seal face mean immediate replacement.
Clean the housing interior. Wipe the inner walls, base and sealing face with a dry lint-free cloth. Do not blow compressed air into the housing — it drives dust into the intake tract. Criterion: no loose dust on the walls, seal face flat with no pits. In humid regions also check the housing base for condensate.
Fit the new element and confirm seating. Compare mounting diameter, overall height and seal type against the old part, then push the element fully home with the seal face in contact and no trapped material. Criterion: element centred without skew, even compression marks around the seal.
Refit and tighten the cover. Tighten clamps or bolts evenly in diagonal sequence. Criterion: uniform gap between cover and housing, no visible skew.
Start up and verify. Restore power and start the machine; after 5–10 minutes read the intake restriction. Criterion: restriction within the new-element baseline band and no abnormal whistling at the intake — unusual noise usually means the seal is not compressed or the element is not seated. Record the date, running hours and restriction reading.
Non-negotiable rule: never start the machine before the element is seated. Running without an element, or with an uncompressed seal, sends unfiltered air straight into the two-stage rotor and can cause irreversible wear in a short time.
Frequently Asked Questions
Which machines use 47742049001?
The Ingersoll Rand MM350-2S two-stage screw compressor — 350 kW, 8.5 bar(g), 64.1 m³/min.
Is this the only air filter part number for the MM350-2S?
No. This model uses several intake element part numbers in different positions with different functions. That is why this page repeats the instruction to verify the number on the old element — ordering on the machine model alone is the most common mistake with this part class.
How do I confirm which element I need?
Three steps: (1) read the part number from the old element and compare digit by digit; (2) note its position on the machine (which stage, which side); (3) if the old part is already discarded, send the machine nameplate and filter housing markings so we can trace the correct number from the build configuration. Do not judge by appearance alone.
How often should it be replaced?
The recommended interval is 2000 hours or 3 months, whichever comes first. More accurately, replace when the intake restriction reading enters the alarm band. In dusty sites, replace earlier based on restriction.
Can the element be blown clean and reused?
No. This is a dry, single-use element not designed for cleaning. Reverse blowing with compressed air removes only surface dust; fine particles embedded in the media stay in place, and blow pressure can fracture fibres or distort pleat spacing, creating paths invisible to the eye. A cleaned element looks serviceable but has already lost efficiency — the risk outweighs the saving.
Why is timely replacement so important on this machine?
The MM350-2S runs continuously at 350 kW. Every 1 kPa rise in intake restriction adds roughly 1% to energy consumption; between a new element and a badly blocked one the rise is about 6%, and at 8000 hours per year the electricity cost far exceeds a set of elements. Unfiltered air also contaminates both rotor stages, the separator element and the lubricant. This is one of the clearest return-on-investment service parts on the machine.
What else should be checked during an air filter change?
The intake hose and clamps (cracks, ageing, looseness), the housing seal face, the intake restriction indicator (whether the needle returns correctly), and the oil filter and separator element on the same service interval. Bypass leakage is as damaging as running without an element, so the hose check is not optional.
Is this part in stock and what is the lead time?
Regular stock ships within 24 hours. Transit is approximately 3–7 days to Southeast Asia, 7–10 days to the Middle East, 10–18 days to Africa and Latin America, and 10–15 days to Russia/Belarus. Confirm stock and sailing schedule at the time of enquiry.
Is this an OEM part?
47742049001 is the Ingersoll Rand OEM part number. Always order against the part number itself — it is the one identifier that cannot be confused.
Why are dimensions not listed?
This number belongs to a newer 11-digit series with no reliable published dimensional data. To avoid quoting an incorrect size, no estimated figures are given here. Measure the outer diameter, mounting diameter and overall height of the old element before ordering, or contact us for verification.
Compatible Machine
This element suits the MM model within the Ingersoll Rand SSR two-stage 350 kW platform.
| No. | Model | Nominal power | Discharge pressure | FAD | Note |
|---|---|---|---|---|---|
| 1 | MM350-2S | 350 kW | 8.5 bar(g) | 64.1 m³/min | Model covered by this page |
Other pressure ratings on the same platform (for identification and to avoid mis-ordering)
| Model | Discharge pressure | FAD | Note |
|---|---|---|---|
| ML350-2S | 7.5 bar(g) | 69.2 m³/min | Same power platform, low-pressure version |
| MH350-2S | 10 bar(g) | 59.5 m³/min | Same power platform, high-pressure version |
| MXU350-2S | 14 bar(g) | 50.2 m³/min | Same power platform, extra-high-pressure version |
Note: this model uses more than one intake element part number. The MM350-2S air filter system uses multiple elements according to build configuration, each with its own part number. This page covers one of them and makes no compatibility claim for the others. To confirm before ordering:
- Preferred: read the part number from the old element and compare digit by digit.
- Alternative: note the element position (which stage / which side) and provide a nameplate photo; we will trace the number from the build configuration.
- Fallback: measure the outer diameter, mounting diameter and overall height of the old part and compare by dimension.
How to read the tables
- This product corresponds to row 1, MM350-2S.
- If your machine is an ML350-2S, MH350-2S or MXU350-2S, send the nameplate model and we will verify the intake element number separately.
- A matching machine model does not mean a common element — the several element numbers for one model are not interchangeable.
Related Components
The following parts sit in the intake and lubrication systems of the MM350-2S and are either on the same service interval or worth checking at the same time. For specific part numbers, refer to the machine's parts manual.
| Component | Location | Function | Check point |
|---|---|---|---|
| Other intake elements for the same model | Air filter housing | Correspond to the machine's element configuration; part numbers differ from this page | Separate by part number when stocking and ordering; do not assume interchangeability from the model |
| Oil filter element | Main oil circuit | Removes wear debris and sludge from lubricant; protects both rotor stages and bearings | Replace on the same interval as the air filter; check the housing seal face for weeping afterwards |
| Separator element | Oil separator tank | Separates oil mist from compressed air and returns oil; controls discharge oil carryover | Check the return line for blockage at the same time — poor return directly raises oil carryover |
| Intake restriction indicator / intake vacuum alarm | Air filter housing or controller | Indicates element blockage; the authoritative signal for replacement timing | Check needle return and sensor line clearance; if faulty, revert to the conservative interval |
| Intake hose and clamps | Between filter housing and airend intake | Keeps the intake path leak-free with no unfiltered air bypass | Check for cracks, ageing and looseness — bypass leakage is as damaging as no element |
| Housing seal face and cover | Air filter housing | Ensures reliable sealing once the element is compressed | Check for pits and corrosion; check the cover for distortion |
| Lubricant | Airend lubrication system | Lubrication and sealing; two-stage machines are demanding on oil quality | Test and change oil to the machine schedule; avoid mixing grades |
Grouped replacement advice: on large two-stage machines, schedule the air filter, oil filter and separator element into the same shutdown to avoid staggered intervals and repeated downtime. In dusty sites, fit a high-dust pre-cleaner first — pre-cleaner cost is well below that of the main element and it is faster to change.