Product
Ingersoll Rand 67754101 Centac Inlet Air Filter Element | 5.4 kg
Ingersoll Rand 67754101 inlet air filter element for Centac, Centac C and CN centrifugal compressors. 5–10 μm filtration, ≥98% efficiency, approx. 5.4 kg net weight, 2,000-hour reference change interval. Serial-number fitment verification and export packing available.
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- OEM / ODM customization available
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Product Overview
67754101 is the inlet air filter element (Element, Inlet Air Filter) for Ingersoll Rand Centac centrifugal air compressors. It mounts inside the inlet filter housing, upstream of the inlet guide vanes and the first-stage impeller.
Centrifugal compressors accelerate air through a high-speed impeller and convert that velocity into pressure in the diffuser. Air must be clean before it reaches the first stage — the inlet element is the particle barrier protecting the impeller blades and intercooler passages.
This element is notably larger and heavier than a typical screw compressor filter: approximately 5.4 kg (11.94 lb) net, roughly two to three times the weight of a screw compressor air filter (usually 1–3 kg). That reflects the high inlet volumes of Centac machines — inlet flows can range from tens to hundreds of cubic metres per minute — and the larger filtration area needed to keep face velocity and pressure drop low.
Centrifugal compressors are 100% oil-free, so there is no lubricating oil circuit to carry contaminants away. Dust that enters the compression path deposits on the impeller, diffuser and intercooler. Impeller fouling affects dynamic balance and aerodynamic efficiency; intercooler tube fouling raises interstage temperature and reduces overall efficiency. Centac units are often continuous-duty assets, and the cost of an unplanned stop typically far exceeds the price of a filter element.
Key specifications
| Item | Value |
|---|---|
| Part number | 67754101 |
| Description | Element, Inlet Air Filter |
| Brand | Ingersoll Rand |
| Compatible machines | Centac, Centac C series, CN series centrifugal compressors |
| Manual reference | 1X9428 |
| Construction | Dry disposable inlet element |
| Net weight (each) | Approx. 5.4 kg (11.94 lb) |
| Filtration rating | 5–10 μm |
| Filtration efficiency | ≥98% |
| Reference change interval | Approx. 2,000 hours, or per the machine inlet differential pressure gauge |
Technical Parameters
Filtration performance
| Parameter | Value / note |
|---|---|
| Filtration rating | 5–10 μm |
| Filtration efficiency | ≥98% for particles ≥5 μm |
| Filter class | Not classified under EN 779 HVAC filter grades; centrifugal inlet elements are characterised by efficiency, inlet resistance and dust holding capacity per ISO 5011 |
Centac impellers run at very high speeds and blade passages are narrow, so particles strike the impeller at far higher relative velocity than in a screw rotor. Erosion from the same particle size is more significant, and cleaning fouled intercooler tubes requires shutdown and disassembly — unplanned overhaul work.
Flow and resistance
| Parameter | Value / note |
|---|---|
| Initial pressure drop | Approx. 0.5–1.0 kPa (approx. 50–100 mmH₂O) |
| Operating differential range | From new-element initial resistance to alarm resistance |
| Alarm / final resistance | Determined by the machine inlet differential pressure gauge |
| Pressure drop vs. energy | Higher inlet resistance lowers inlet air density; the machine must increase power to hold pressure and flow, raising specific power |
Because the Centac is a centrifugal machine, its delivery capacity depends on inlet air density. As dust loading raises inlet vacuum, both the pressure and density of air entering the first-stage impeller fall. To maintain set discharge pressure and flow, the machine must increase speed or power, and specific power rises. For medium and large continuous-duty units, this energy penalty over a year usually far exceeds the cost of a filter element — which is why Ingersoll Rand fits an inlet differential pressure indicator.
Construction and installation
| Parameter | Value / note |
|---|---|
| Construction | Cylindrical element, fitted into the filter housing |
| Net weight (each) | Approx. 5.4 kg (11.94 lb) |
| Mounting interface | Fits the Centac inlet filter housing; axial face seal |
| Sealing | Face seal (axial compression) |
For reference: at approx. 5.4 kg net, this element is two to three times the weight of a standard screw compressor air filter (1–3 kg) and is a large centrifugal-class element. Do not cross-reference other part numbers by weight alone.
Materials
| Parameter | Value / note |
|---|---|
| Filter media | Imported wood-pulp filter paper (industry-common US HV or Ahlstrom grades) |
| Media weight | Approx. 130 g/m² |
| Inner / outer support | Galvanised steel perforated cage (inner cage plus outer guard) |
| End caps | Metal end caps (galvanised steel) bonded with polyurethane adhesive |
| Seal | NBR (nitrile) sealing ring |
| Bonding | Polyurethane (PU) hot-melt adhesive |
Operating tolerance
| Parameter | Value / note |
|---|---|
| Operating temperature | −10 to +100 °C |
| Relative humidity | ≤80% RH, no condensation |
| Burst strength | Filter paper burst strength approx. 200–400 kPa (per ISO 2758) |
| Collapse resistance | Element should withstand the machine inlet alarm differential without collapsing |
| Special features | No flame-retardant, anti-static or special coating markings noted for this model |
Service life and maintenance
| Parameter | Value / note |
|---|---|
| Service life | Approx. 2,000 hours |
| Actual change interval | Per the machine inlet differential pressure gauge; shorten in coastal (salt mist), desert (fine dust) or industrial (process dust) environments |
| Shelf life | Approx. 2–3 years, unopened, dry and ventilated storage |
On change intervals: besides the 2,000-hour reference, an “8,000 hours or annually” guideline is also quoted (mostly for rotary screw applications). For Centac centrifugal machines, the inlet differential pressure gauge reading is the most reliable basis — dust loading varies widely by site and can multiply or halve the actual interval.
Applicable standards
| Item | Content |
|---|---|
| Product standard | ISO 5011 (inlet air cleaning filters for internal combustion engines and compressors — performance testing), evaluating filtration efficiency, inlet resistance and dust holding capacity |
| Other commonly cited standards | ANSI/CAGI ADF 400-1999 (compressed air and gas), ISO 8573-4 (compressed air — particle measurement) |
| Frequently referenced test standards | ISO 2941 / 2942 / 2943 / 3723 / 3724 / 3968 |
| Note on standard applicability | The ISO 29xx / 37xx series are general test methods for hydraulic fluid power filter elements. If a supplier can only provide hydraulic filter standards, request ISO 5011 data or the OEM specification sheet as well. |
| Oil-free background | The Centac machines served by this element are ISO 8573-1 Class 0 oil-free certified; inlet filtration is the first line of defence in maintaining that class |
Standard Maintenance and Installation Steps
Centrifugal compressor work differs from screw compressor work: the impeller has high rotational inertia, and the controller must confirm zero speed. Allow roughly 40–60 minutes per job; depending on housing size, two people or mechanical assistance may be required (this element weighs 5.4 kg net, so plan safe lifting and handling).
Shut down, confirm zero speed, lock out/tag out
Stop the machine and wait for the controller to confirm zero speed (do not judge by sound). Isolate the main power and apply lockout/tagout. Criterion: controller shows zero speed and there is no coast-down noise.Open the inlet filter housing
The housing is upstream of the inlet guide vanes. Loosen cover latches or fasteners evenly in a diagonal sequence. Criterion: on large housings, support the cover until the last fastener is released to prevent it dropping.Remove the old element and inspect for dust trails
Withdraw the old element; it is heavy, so support it and avoid crushing the filter media. Look for dust trails on the housing inner wall — trails indicate seal bypass, meaning unfiltered air has passed the seal. Criterion: no dust trails on the inner wall means the seal was sound.Clean the housing and sealing face
Wipe the housing inner wall, base and sealing face with a dry, lint-free cloth. Do not blow compressed air hard into the housing (it drives dust into the inlet duct). Criterion: no loose dust inside and a flat sealing face free of dents or pitting.Verify the new element
Compare against the old part item by item: part number, dimensions, seal integrity, undamaged media. Criterion: all part numbers and dimensions must match before installation; confirm the dimensions of this element by measurement (see Technical Parameters).Fit the new element and confirm seating
Place the 67754101 into the housing and confirm it is fully seated at the base, the sealing face is in contact with no trapped material, and the element is centred without skew. Criterion: even compression marks around the sealing face.Refit the cover and check the differential gauge impulse line
Refit the cover and tighten evenly in a diagonal, staged sequence. Before start-up, confirm the inlet differential pressure gauge impulse line is clear, unblocked and not frozen. Criterion: line clear; a blocked line gives a false “clean” reading and lets the element run past its service life.Start per the centrifugal compressor procedure and verify
Start according to the machine procedure. Once running steadily, read the inlet differential pressure — it should return to the clean-element baseline range — and listen for air leaks at the housing. Criterion: normal differential reading and no abnormal noise; record the date, running hours and differential reading.
Centrifugal-specific rule: the consequences of seal bypass are magnified on a centrifugal machine. A screw compressor still has oil to carry away some particles; a centrifugal compression path is oil-free, so particles deposit entirely on the impeller and coolers. A single seal failure can mean an impeller dynamic balancing job.
Frequently Asked Questions
Which machines use 67754101?
Ingersoll Rand Centac centrifugal air compressors, covering Centac, Centac C series and CN series. The Centac range is broad, so exact fitment should be confirmed against the machine nameplate and serial number.
How do I know when to replace it?
Two ways: (1) read the machine inlet differential pressure gauge (most reliable, reflects actual dust loading); (2) use the 2,000-hour interval as a reference. The gauge reading takes priority — dust loading varies greatly by site, and a fixed interval either wastes service life or runs the element too long.
How much does dust loading affect centrifugal efficiency?
Rising inlet vacuum lowers inlet air density, so the machine must increase power to hold pressure and flow, raising specific power. On a continuous-duty medium or large Centac, this energy cost over a year usually far exceeds the cost of the element.
Can I blow it clean and reuse it?
No. This is a dry, disposable element and is not designed to be cleaned. Back-blowing with compressed air damages the media fibre structure and creates invisible channels that let unfiltered air pass — more dangerous than not replacing it.
What else should be checked during replacement?
The inlet guide vane linkage, intake silencer, intercooler tube bundles and housing sealing face. On water-cooled machines, also check the cooler water side for scaling, which directly affects interstage temperature. Always check that the differential gauge impulse line is clear.
Can this element be interchanged with a screw compressor air filter?
No. At approx. 5.4 kg net, it is two to three times the weight of a screw compressor air filter, and its dimensions, filtration area and resistance characteristics are designed for the high inlet volumes of a centrifugal machine. The two are not interchangeable.
Are 67754101 and 67765362 the same part?
No. Both names contain “inlet air filter” (67754101 = Element, Inlet Air Filter; 67765362 = Intake Air Filter Core), but the part numbers differ. Before ordering, read the number on the old part itself rather than relying on the name.
How do I confirm dimensions?
Confirm outer diameter, inner diameter and height by measuring the old part, or request a specification drawing from Ingersoll Rand. Do not cross-reference by weight or appearance alone.
Is it 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. Final lead time depends on stock and sailing schedule at the time of enquiry.
How do I confirm the part number 100%?
Three steps: (1) check the machine nameplate to confirm it is a Centac series; (2) provide the serial number so we can cross-check against the centrifugal parts catalogue; (3) read the part number on the old element. Step 3 is the most reliable.
Compatible Machine Models
This part number fits Ingersoll Rand Centac centrifugal air compressors. Compatibility range:
| No. | Compatible machines | Notes |
|---|---|---|
| 1 | Centac | Main centrifugal series, including multi-stage, multi-shaft geared construction |
| 2 | Centac C series | Common models include C400, C700, C700e, C1000, C2000, C3000 and others |
Background on the Centac range
Centac is Ingersoll Rand’s centrifugal compressed air machine brand, using multi-shaft internal gearing and multi-stage compression. Output flow covers roughly 720–51,000 m³/h depending on model, with pressure ranges of roughly 0.7–22.5 bar. The machines are 100% oil-free and commonly certified to ISO 8573-1 Class 0, and are widely used in electronics, pharmaceutical, petrochemical and textile industries where air quality is critical.
How to read the table
- The table shows the compatibility range; individual fitment must be confirmed by machine nameplate and serial number.
- Large Centac machines usually use multiple filter elements in the inlet system; the number per machine depends on the model. Confirm the element count before ordering.
- If you are unsure which series your machine belongs to, send a nameplate photo and we will cross-check by serial number.
Related Components
Seven components in the Centac inlet and lubrication systems are typically maintained on a similar cycle to the air filter. They are listed below by location, function and inspection point; for specific part numbers, refer to the machine Centac parts manual.
| Component | Location | Function | Inspection point |
|---|---|---|---|
| Intake air filter core | Inlet filter housing | A separate part number with a similar name (67765362 appears in local manuals) | Check the part number on the part itself; do not confuse with 67754101 |
| Differential pressure gauge | On the inlet filter housing | Indicates element dust loading; the authoritative basis for replacement timing | Check the needle returns correctly; impulse line must be clear and not frozen |
| Inlet guide vane assembly | Downstream of the filter, upstream of the first-stage impeller | Regulates inlet volume and angle for capacity control | Check linkage for binding or looseness; vane fouling affects control accuracy |
| Intake silencer | On the inlet duct | Reduces intake noise; on some models also straightens airflow | Check for corrosion perforation and loose silencing material |
| Intercooler tube bundles | Between compression stages | Lowers interstage air temperature; a key factor in centrifugal efficiency | Check the air side for fouling; on water-cooled machines check the water side for scaling |
| Aftercooler | After the final stage discharge | Cools discharge air to the set temperature | Blocked tubes directly raise discharge temperature |
| Gearbox and bearing lubrication components | Gear speed-increasing box | Lubricates gears and high-speed bearings (isolated from the compression path) | Test oil per machine requirements; monitor oil level and temperature |
Recommended companion checks: maintenance value on a centrifugal machine centres on efficiency retention. Each time the inlet element is replaced, also check the inlet differential pressure gauge, guide vane mechanism and intercooler condition so the shutdown window is fully used. Cooler cleaning and impeller inspection should be part of annual planned maintenance rather than waiting for a visible efficiency drop.