Product
Ingersoll Rand MM350-2S Air Filter Element 47742049001 | 350 kW
Replacement air filter element 47742049001 for Ingersoll Rand MM350-2S two-stage screw compressors (350 kW, 8.5 bar(g), 64.1 m³/min). 5–10 μm filtration, 2,000-hour service interval. Verify the part number on the old element before ordering — this model uses more than one intake filter part 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 housing, upstream of the airend intake. Dust, grit and fibres are trapped on the media surface and in its depth; only clean air reaches the airend.
Important for buyers: the MM350-2S intake system does not use a single filter part number. Air filter configuration varies with machine version, so more than one element part number runs in parallel. This page makes no assumption that one part number covers the whole model. Before ordering, read the part number on the old element and confirm its mounting position — not the machine model alone. This is the most common purchasing 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(g) — a high-flow intake. Media area and structural strength must match that airflow.
Key Specifications
| Item | Value |
|---|---|
| Part number | 47742049001 |
| Product name | 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 element |
| Filtration rating | 5–10 μm |
| Recommended change interval | 2,000 hours or 3 months |
Technical Data
Filtration performance
| Parameter | Value / note |
|---|---|
| Filtration rating | 5–10 μm |
| Filtration efficiency | ≥98% for particles ≥5 μm |
| Filter class | Not rated under EN 779 HVAC classes; intake filters are characterised by ISO 5011 efficiency, restriction and dust holding capacity |
Flow and restriction
| Parameter | Value / note |
|---|---|
| Rated airflow | Matched to MM350-2S intake (64.1 m³/min @ 8.5 bar) |
| Initial pressure drop | Approx. 0.5–1.0 kPa (approx. 50–100 mmH₂O) |
| Alarm / final restriction | Per the machine intake restriction indicator or controller vacuum alarm |
| Restriction vs. energy | Each 1 kPa rise in intake restriction adds roughly 1% to machine energy consumption |
Why restriction matters on a 350 kW machine
Rising intake restriction lowers intake pressure and density. To hold set discharge pressure and flow, the machine must work harder and specific power climbs. At 0.8 MPa discharge and 101.3 kPa atmospheric, theoretical compression-ratio figures are:
| 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% |
On a 350 kW machine running 8,000 hours a year, energy use rises about 6% from new element to heavily blocked. The electricity cost far exceeds the element price. On large machines, change on restriction reading — not on the calendar.
Construction and materials
| Parameter | Value / note |
|---|---|
| Media | Imported wood-pulp filter paper (commonly US HV or Ahlstrom grades) |
| Media weight | Approx. 130 g/m² |
| Support | Galvanised perforated steel inner cage and outer guard |
| End caps | Metal end caps (galvanised steel) with polyurethane bonding |
| Seal | End-face seal ring (oil-resistant rubber) |
| Operating temperature | −10 to +100 °C |
| Relative humidity | ≤80% RH, no condensation |
Dimensions: this is a newer 11-digit part number and no reliable published dimensions are available. Measure the old element — outside diameter, bore or mounting diameter, and overall height — or send photos and readings for our verification. Other filter part numbers on the same model are not the same size; do not cross-apply dimensions.
Standards
| Item | Content |
|---|---|
| Product standard | ISO 5011 (intake filters for engines and compressors — performance test: efficiency, restriction, dust holding capacity) |
| Commonly cited test standards | ISO 2941 / 2942 / 2943 / 3723 / 3724 / 3968 |
| Note on applicability | The ISO 29xx / 37xx series are hydraulic filter test methods. If a supplier can only cite hydraulic standards, request ISO 5011 data or the original specification sheet. |
Installation Steps
Large two-stage machines have big external filter housings. Allow 30–40 minutes and work in pairs.
- Shut down, confirm zero pressure, lock out. Isolate main power and lock out. Open the receiver drain to release pressure. Check: controller reads 0 system pressure and no residual air noise.
- Verify the part number before touching anything. Confirm which position you are replacing. Check: read the number on the old element and compare digit by digit with the part you bought — never rely on the name or machine model alone. Fitting the wrong element can cause poor sealing or prevent seating.
- Open the filter housing. Release the clips or bolts on the end cover in a diagonal sequence. Check: no cover distortion, no seized clips. Support large covers before the last fastener is released.
- Remove the old element and inspect it. Pull it out vertically; use lifting help for heavy elements. Check: even grey-brown dust is normal; oily residue points to oil carryover upstream; torn media, debonded end caps or a flattened seal mean immediate replacement.
- Clean the housing interior. Wipe the inner wall, base and sealing face with a dry lint-free cloth. Do not blow compressed air into the housing — it drives dust into the intake. Check: no loose dust, sealing face flat with no pits. In humid regions also check for condensate in the housing base.
- Fit the new element and confirm seating. Compare mounting diameter, overall height and seal type with the old part, then push fully home with the seal seated and no trapped material. Check: element centred, even seal compression all round.
- Refit and tighten the cover. Tighten clips or bolts evenly in a diagonal sequence. Check: even cover-to-housing gap, no skew.
- Start up and verify. Restore power and run 5–10 minutes, then read intake restriction. Check: restriction within the new-element baseline and no unusual whistle at the intake (noise usually means the seal is not compressed or the element is not seated). Record date, running hours and restriction reading.
Hard rule: never start the machine with the element unseated. Running without a filter or with an uncompressed seal sends unfiltered air straight to 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).
Is this the only air filter part number for the MM350-2S?
No. This model uses more than one intake element part number, with different mounting positions and functions. That is why we stress checking the number on the old element — ordering by machine model alone is the most common error on this model.
How do I confirm which element I need?
Three steps: (1) read the part number on the old element and compare digit by digit; (2) note its position on the machine (which stage, which side); (3) if the old part was discarded, send the machine nameplate and filter housing markings and we will cross-check the configuration. Do not judge by appearance alone.
How often should it be changed?
Recommended at 2,000 hours or 3 months, whichever comes first. More accurately, change when the intake restriction reading enters the alarm band. In dusty sites, change earlier based on restriction.
Can the element be blown clean and reused?
No. This is a dry, single-use element and is not designed to be washed. Reverse blowing only removes surface dust; fine particles stay embedded in the media, and air pressure can fracture fibres or distort pleats, creating invisible channels. A cleaned element can look fine while no longer filtering.
Why is timely replacement critical on this machine?
The MM350-2S is a 350 kW continuous-duty machine. Each 1 kPa of intake restriction adds about 1% to energy use; from new to heavily blocked, energy rises about 6%. At 8,000 hours a year the electricity cost far exceeds a set of elements. Unfiltered air also contaminates the two-stage rotor, separator element and lubricant.
What else should be checked during an air filter change?
Intake hoses and clamps (cracks, ageing, looseness), housing sealing faces, the restriction indicator (does the needle return correctly), plus the oil filter and separator element on the same service interval. Bypass leakage is as damaging as running without a filter.
Is stock available and what is the lead time?
Regular stock items ship within 24 hours. Approximate transit: Southeast Asia 3–7 days, Middle East 7–10 days, Africa and Latin America 10–18 days, Russia/Belarus 10–15 days. Confirm against current stock and sailing schedule at the time of enquiry.
Is this a genuine part?
47742049001 is an Ingersoll Rand original part number. Always buy against the part number itself — it is the one identifier that cannot be confused.
Model Compatibility
This element fits the MM model 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 part number. The MM350-2S air filter uses several elements according to machine configuration, each with its own part number. This page covers one part number only and makes no compatibility claim for the others. Confirm before ordering:
- Preferred: read the part number on the old element and compare digit by digit.
- Alternative: record the element position (which stage / which side) and send a nameplate photo; we cross-check the configuration.
- Fallback: measure outside diameter, mounting diameter and overall height and match by size.
- This page 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 correct air filter part number separately.
- The same machine model does not mean interchangeable elements — part numbers within one model cannot be substituted for each other.
Related Parts
Parts in the MM350-2S intake and lubrication system that share the service interval or should be checked at the same time. For specific part numbers, refer to the machine parts manual.
| Part | Location | Function | Check points |
|---|---|---|---|
| Other intake elements for this model | Air filter housing | Match the machine filter configuration; different part numbers from this page | Separate by part number in stocking and ordering — do not assume interchangeability by model |
| Oil filter element | Main oil circuit | Removes wear debris and sludge, protecting the two-stage rotor and bearings | Change on the same interval as the air filter; check the housing seal for weeping afterwards |
| Separator element | Separator tank | Separates oil mist from compressed air and returns oil; controls oil carryover | Check the return line for blockage at the same time — poor return directly raises oil carryover |
| Restriction indicator / intake vacuum alarm | Filter housing or controller | Shows element blockage and is the authoritative change trigger | Check needle return and sensing line; if failed, revert to a conservative interval |
| Intake hoses and clamps | Between filter housing and airend intake | Keeps the intake path leak-free with no unfiltered bypass | Check for cracks, ageing and looseness; bypass leakage is as damaging as no filter |
| Housing sealing face and cover | Air filter housing | Ensures reliable sealing when the element is compressed | Check for pits and corrosion; 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; do not mix grades |
Service tip: on large two-stage machines, group the air filter, oil filter and separator element into one shutdown to avoid staggered intervals and repeated downtime. In dusty sites, fit a high-dust pre-cleaner — it costs far less than the main element and is faster to change.
For distributor and OEM/ODM enquiries, send the old element part number, machine nameplate and required quantity. We will confirm fitment, packing and lead time, and quote against your target market requirements.