Product
Ingersoll Rand MM350-2S Air Filter Element 47742049001 | 350 kW OEM Part
Ingersoll Rand 47742049001 air filter element for the MM350-2S two-stage screw compressor (350 kW / 8.5 bar / 64.1 m³/min). 5–10 μm filtration, 2000-hour service interval. Verify the part number on the old element before ordering — this model uses more than one intake filter number.
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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 assembly, upstream of the airend intake. Incoming air passes through the element first; dust, grit and fibers are trapped on the media surface and in its depth, and only clean air reaches the airend.
One point this page must make clear: the MM350-2S intake system does not use a single filter part number. The air filter configuration varies with machine version and quantity, so several element numbers run in parallel. This page therefore makes no assumption that one element fits the whole model. Before ordering, read the part number on the old element and confirm its mounting position rather than relying on the machine model alone. This is the most common sourcing error on high-power compressor parts.
Duty context: the MM350-2S is a 350 kW two-stage machine with 64.1 m³/min displacement at 8.5 bar — a high-flow intake duty. The element handles far more air per hour than mid-size machines, so filtration area and structural strength must match.
| Item | Value |
|---|---|
| Part number | 47742049001 |
| Description | Air filter element |
| Brand | Ingersoll Rand |
| Application | MM350-2S two-stage screw compressor (350 kW) |
| Machine displacement | 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 change interval | 2000 hours or 3 months |
Basic Specifications
| Parameter | Detail |
|---|---|
| Part number | 47742049001 |
| Brand | Ingersoll Rand |
| Product name | Air filter element |
| Category | Intake filtration (air filter) |
| Application | MM350-2S (350 kW / 8.5 bar two-stage screw compressor) |
| Mounting position | Inside the external air filter assembly, upstream of the airend intake |
| Quantity per machine | Per machine configuration — confirm against the actual unit |
| Change interval | 2000 hours or 3 months |
Fitment confirmation: this element fits the Ingersoll Rand MM350-2S. The model uses more than one air filter part number, each with a different position and function. Before ordering, read the part number on the old element and confirm its mounting position, or send us a photo of the old part and the machine nameplate so we can cross-check against the machine configuration. Do not order on the basis of "fits MM350-2S" alone.
Technical Data
1. Filtration performance
| Parameter | Value / note |
|---|---|
| Filtration rating | 5–10 μm |
| Filtration efficiency | ≥98% for particles ≥5 μm |
| Filter class | HVAC filter classes (EN 779) do not apply; air filter elements are characterized under ISO 5011 by efficiency, intake restriction and dust holding capacity |
| Dust holding capacity | — |
2. Flow and restriction
| Parameter | Value / note |
|---|---|
| Rated air flow | Matched to MM350-2S intake (machine displacement 64.1 m³/min @ 8.5 bar) |
| Face velocity | — |
| Initial pressure drop | Approx. 0.5–1.0 kPa (approx. 50–100 mmH₂O) |
| Operating differential range | From new-element initial restriction to the clogging alarm value |
| 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; to hold discharge pressure and flow the machine must do more work, and specific power rises. Based on a theoretical compression-ratio calculation at 0.8 MPa discharge and 101.3 kPa atmospheric pressure:
| 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% |
Engineering implication: the MM350-2S is a 350 kW continuous-duty machine. At 8000 operating hours per year, energy consumption climbs by roughly 6% as the element goes from new to heavily clogged — an electricity cost far above the price of the element. On large machines, change elements by intake restriction, not by the calendar.
3. Construction and mounting
| Parameter | Value / note |
|---|---|
| Dimensions | — |
| Construction | Dry pleated cylindrical element |
| Effective filtration area | — |
| Pleat count / pitch | — |
| Mounting interface | Fits into the air filter assembly, axially compressed |
| Sealing | End-face compression seal (per actual construction) |
On dimensions: this is a newer 11-digit number, and no reliable dimensional data is available in public OEM literature or third-party channels. Measure the old part before ordering — outside diameter, inside (or mounting bore) diameter and overall height — or send photos and measurements for us to check. Other filter numbers for the same model do not share the same dimensions; never carry dimensions across part numbers.
4. Materials
| Parameter | Value / note |
|---|---|
| Filter media | Imported wood-pulp filter paper (industry-common HV or Ahlstrom media) |
| Media basis weight | Approx. 130 g/m² |
| Inner / outer support | Galvanized steel perforated core (inner core + outer guard) |
| End caps | Metal end caps (galvanized steel) with polyurethane adhesive |
| Seal | End-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 paper burst test) |
| Collapse resistance | Element must withstand the machine intake alarm differential without collapsing |
| Special features | No flame-retardant, anti-static or special coating markings on this number |
6. Service life and maintenance
| Parameter | Value / note |
|---|---|
| Service life | 2000 hours or 3 months, whichever comes first |
| High-dust environments | Follow the intake restriction reading; replace once it enters the alarm zone |
| Storage shelf life | Approx. 2–3 years (unopened, dry and ventilated) |
7. Applicable standards
| Item | Detail |
|---|---|
| Product standard | ISO 5011 (intake air filters for engines and compressors — performance testing), evaluated by efficiency, intake restriction and dust holding capacity |
| Commonly cited test standards | ISO 2941 / 2942 / 2943 / 3723 / 3724 / 3968 |
| Standard applicability note | The ISO 29xx / 37xx series are generic test methods for hydraulic fluid power filter elements. If a supplier can only offer hydraulic filter standards, request ISO 5011 data or the OEM specification sheet. |
Standard Maintenance and Installation Steps
The external filter housing on a large two-stage machine is sizable; allow roughly 30–40 minutes and work with two people.
Shut down, confirm zero pressure, lock out/tag out. Isolate the main power and apply a lockout tag, then open the receiver drain valve to release pressure. Criterion: the controller shows zero system pressure and there is no residual air flow noise.
Verify the part number before touching anything. Confirm which position is being changed first. Criterion: read the part number on the old element and compare digit by digit with the number ordered — never rely on the part name or machine model alone. Where several filter numbers exist for one model, fitting the wrong one causes poor sealing or prevents seating altogether.
Open the air filter housing. Release the end-cover clamps or fasteners in a diagonal sequence. Criterion: cover undistorted, clamps not seized. Have someone support a large cover before the last fastener is released.
Remove the old element and inspect it. Pull it out vertically; use lifting assistance given its size and weight. Check dust distribution and media condition. Criterion: even grey-brown dust is normal; oily residue indicates oil carryover upstream and needs investigation; torn media, debonded end caps or a flattened seal mean immediate replacement.
Clean the housing interior. Wipe the inner walls, base and sealing face with a dry, lint-free cloth. Never blow compressed air into the housing — it drives dust into the intake passage. Criterion: no loose dust inside, sealing face flat with no pits. In humid regions, also check for condensate at the housing base.
Fit the new element and confirm seating. Compare mounting diameter, overall height and seal type against the old part, then push it fully home with the seal face in contact and no trapped material. Criterion: element centered, no skew, even compression marks around the seal.
Refit the cover and tighten. Tighten clamps or bolts evenly in stages, in a diagonal sequence. Criterion: even 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 range 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 with no element, or with an uncompressed seal, sends unfiltered air straight into the two-stage rotor and can cause irreversible wear in a short time.
FAQ
Which machines use 47742049001?
The Ingersoll Rand MM350-2S two-stage screw compressor — 350 kW, 8.5 bar(g), 64.1 m³/min displacement.
Is this the only air filter number for the MM350-2S?
No. This model uses several intake filter numbers with different positions and functions. That is why this page repeatedly stresses checking the number on the old element — ordering by machine model alone is the most common error on this class of part.
How do I confirm which element I need?
Three steps: (1) read the part number on the old element and compare it digit by digit; (2) note its position on the machine (which stage, which side); (3) if the old part has been discarded, provide the machine nameplate and filter housing markings so we can cross-check against the machine configuration. Do not judge by "it looks the same".
How often should it be replaced?
The recommended interval is 2000 hours or 3 months, whichever comes first. More accurately, follow the intake restriction reading and schedule replacement once it enters the alarm zone. In dusty sites, replace earlier based on restriction.
Can I blow the element clean and reuse it?
No. This is a dry, single-use element designed not to be washed. Reverse blowing with compressed air only removes surface dust; fine particles embedded in the media stay put, and the air pressure can fracture fibers or distort pleat spacing, creating invisible channels. A cleaned element looks clean but has effectively failed — the risk outweighs the saving.
Why is timely air filter replacement essential on this machine?
The MM350-2S is a 350 kW continuous-duty machine. Each 1 kPa rise in intake restriction raises energy consumption by roughly 1%; from new to heavily clogged, consumption climbs about 6%, and at 8000 hours per year the electricity cost far exceeds a set of elements. Unfiltered air also contaminates the two-stage rotor, the separator element and the lubricant. This is one of the maintenance items with the clearest return on investment.
What else should be checked when changing the air filter?
The intake hose and clamps (cracks, aging, looseness), the housing sealing face, the intake restriction indicator (does the needle return properly), and the oil filter and separator element on the same service interval. Bypass leakage is as harmful as running without an element, so the hose check is not optional.
Is this element in stock, and what is the lead time?
Regular stock items ship within 24 hours. Southeast Asia approx. 3–7 days, Middle East approx. 7–10 days, Africa and Latin America approx. 10–18 days, Russia/Belarus approx. 10–15 days. Confirm against stock and sailing schedules at the time of enquiry.
Is it a genuine part?
The 47742049001 described here is an Ingersoll Rand OEM part number. Always order by the part number itself — the number is the only identifier that cannot be confused.
Why are dimensions not listed?
This is a newer 11-digit number with no reliable dimensional data in public sources. To avoid supplying a wrong size, this page gives no estimated values. Measure the outside diameter, mounting bore and overall height of the old part before ordering, or contact us for cross-checking assistance.
Machine Compatibility
This element fits MM models in the Ingersoll Rand SSR two-stage 350 kW platform.
| No. | Model | Nominal power | Discharge pressure | Displacement | 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-purchase)
| Model | Discharge pressure | Displacement | 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 |
This model uses more than one intake filter number
The MM350-2S air filter system uses multiple elements according to machine configuration, each with its own part number. This page covers one number only and makes no fitment claim for the others. Confirm before ordering:
- Preferred: read the part number on the old element and compare digit by digit with the number ordered;
- Alternative: note the element position (which stage / which side) and provide a nameplate photo; we cross-check against the machine configuration;
- Fallback: measure the old part's outside diameter, mounting bore and overall height and compare by size.
Reading 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 air filter number separately.
- A matching machine model does not mean a common element — the several filter numbers for one model are not interchangeable.
Related Components
In the MM350-2S intake and lubrication system, the following parts share the service interval or should be checked at the same time. For specific part numbers, refer to the machine's own parts manual.
| Component | Location | Function | Check points |
|---|---|---|---|
| Other intake filter elements for the same model | Inside the air filter assembly | Correspond to the model's filter configuration; part numbers differ from this page | Distinguish by part number in stock and order handling; do not assume interchangeability by model |
| Oil filter element | Main oil circuit | Removes wear debris and sludge from the lubricant, protecting the two-stage rotor and bearings | Replace on the same interval as the air filter; after replacement check the housing seal face for oil seepage |
| Separator element | Oil separator tank | Separates oil mist from compressed air and returns oil, controlling discharge oil carryover | Check the oil return line for blockage at replacement (poor return directly causes high oil carryover) |
| Intake restriction indicator / intake vacuum alarm | Air filter assembly or controller | Indicates element clogging; the authoritative basis for replacement timing | Check that the needle returns properly and the sensing line is clear; if faulty, revert to a conservative interval |
| Intake hose and clamps | Between the filter assembly and the airend intake | Keeps the intake path leak-free with no unfiltered air bypass | Check for cracks, aging and looseness — bypass leakage is as harmful as no element at all |
| Housing sealing face and end cover | Air filter assembly | Ensures reliable sealing once the element is compressed | Check for pits and corrosion pitting; check the cover for distortion |
| Lubricant | Airend lubrication system | Lubrication and sealing; two-stage machines have demanding oil requirements | Test and change per machine requirements and interval; avoid mixing grades |
Combined replacement advice: on large two-stage machines, group the air filter, oil filter and separator element into one shutdown to avoid staggered intervals and repeated downtime. On dusty sites, fit a high-dust pre-cleaner first — pre-cleaner cost is well below the main element and replacement is faster.