Product
Ingersoll Rand 67754101 Centac Inlet Air Filter Element | OEM Export
OEM inlet air filter element for Ingersoll Rand Centac, Centac C, and CN centrifugal compressors. 5–10 μm filtration, ≥98% efficiency, approx. 5.4 kg. Bulk and OEM supply with serial-number fitment verification.
- Export packaging & documentation support
- OEM / ODM customization available
- Sample and bulk order workflow
Product Overview
67754101 is the inlet air filter element (Element, Inlet Air Filter) for Ingersoll Rand Centac centrifugal air compressors. It installs inside the inlet filter housing, upstream of the inlet guide vanes and the first-stage impeller, forming the particle barrier that protects impeller blades and intercooler passages.
This element is notably larger and heavier than typical screw compressor filters: approximately 5.4 kg (11.94 lbs) net, two to three times the weight of a standard rotary screw air filter (usually 1–3 kg). This reflects the high inlet volumes of Centac machines, where a larger filtration area is required to keep face velocity and resistance low.
Centac units are 100% oil-free, so no lubricating oil circulates through the compression chamber to carry contaminants away. Dust that enters deposits on the impeller, diffuser, and intercooler. Impeller fouling alters dynamic balance and aerodynamic efficiency; intercooler tube fouling raises interstage temperature and reduces overall efficiency. For continuous-duty Centac machines, the cost of one unplanned stop typically far exceeds the price of the filter itself.
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 |
| Type | Dry disposable inlet element |
| Net Weight | Approx. 5.4 kg (11.94 lbs) |
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% |
| Recommended Change Interval | Approx. 2,000 hours, or per inlet differential pressure gauge |
Technical Parameters
Filtration Performance
| Parameter | Value / Notes |
|---|---|
| Filtration Rating | 5–10 μm |
| Filtration Efficiency | ≥98% for particles ≥5 μm |
| Filter Class | Not classified under EN 779 HVAC standards; centrifugal inlet filters are characterized per ISO 5011 by efficiency, inlet resistance, and dust holding capacity |
Why centrifugal compressors are more sensitive to inlet cleanliness: Centac impellers run at tens of thousands of rpm with narrow blade passages. Particle impact velocity on the impeller is far higher than in a screw rotor, so erosion from the same particle size is more severe. Once intercooler tubes foul, cleaning requires shutdown and disassembly — unplanned overhaul work.
Flow and Resistance
| Parameter | Value / Notes |
|---|---|
| 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 | Rising inlet resistance lowers inlet air density; the machine increases power to hold pressure and flow, raising specific power |
Pressure drop and energy: Centac output depends on inlet air density. As dust loading increases negative inlet pressure, both pressure and density at the first-stage impeller fall. To maintain set discharge pressure and flow, the machine must raise speed or power, increasing specific power. For medium-to-large continuous-duty centrifugal machines, this annual energy penalty 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 / Notes |
|---|---|
| Type | Cylindrical inlet element, installed in filter housing |
| Net Weight | Approx. 5.4 kg (11.94 lbs) |
| Mounting Interface | Fits Centac inlet filter housing, face-compressed seal |
| Sealing | Face seal (axial compression) |
For reference: at approx. 5.4 kg, this element is 2–3 times the weight of a standard screw compressor air filter (1–3 kg) and is a large centrifugal-duty filter. Do not cross-reference other part numbers by weight or appearance alone.
Materials
| Parameter | Value / Notes |
|---|---|
| Filter Media | Imported wood pulp filter paper (industry-common US HV or Ahlstrom media) |
| Media Weight | Approx. 130 g/m² |
| Inner / Outer Support | Galvanized steel perforated cage (inner cage + outer guard) |
| End Caps | Metal end caps (galvanized steel) with polyurethane adhesive |
| Seal | Nitrile rubber (NBR) gasket |
| Bonding | Polyurethane (PU) hot-melt adhesive |
Operating Tolerance
| Parameter | Value / Notes |
|---|---|
| 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 must withstand machine inlet alarm differential without collapsing |
| Special Features | No flame-retardant, anti-static, or special coating markings on this model |
Service Life and Maintenance
| Parameter | Value / Notes |
|---|---|
| Service Life | Approx. 2,000 hours |
| Actual Change Interval | Per machine inlet differential pressure gauge; shorten in coastal (salt fog), desert (fine dust), or industrial (process dust) environments |
| Shelf Life | Approx. 2–3 years (unopened, dry, ventilated storage) |
On change intervals: Beyond the 2,000-hour reference, an alternative guidance of "every 8,000 hours or annually" is sometimes cited (mostly for rotary screw applications). For Centac centrifugal machines, the inlet differential pressure gauge reading is the most reliable basis — actual intervals vary by multiples with ambient dust loading.
Applicable Standards
| Item | Details |
|---|---|
| Product Standard | ISO 5011 (inlet air cleaners for engines and compressors — performance testing), evaluating efficiency, inlet resistance, and dust holding capacity |
| Other Common References | ANSI/CAGI ADF 400-1999 (compressed air and gas), ISO 8573-4 (compressed air — particle measurement) |
| Commonly Cited Test Standards | ISO 2941 / 2942 / 2943 / 3723 / 3724 / 3968 |
| Standard Applicability Note | The ISO 29xx / 37xx series are general test methods for hydraulic transmission filter elements. If a supplier can only provide hydraulic filter standards, request ISO 5011 or the OEM specification sheet. |
| Oil-Free Certification Context | The Centac machines this element serves are ISO 8573-1 Class 0 oil-free certified; inlet filtration is the first line of defense in maintaining that oil-free class |
Standard Maintenance and Installation Steps
Centrifugal compressor work differs from screw compressor work: the impeller has significant rotational inertia, so the controller must confirm zero speed. A single job takes about 40–60 minutes; depending on housing size, two people or mechanical assistance may be needed (the element weighs 5.4 kg and requires secure handling and lifting).
Stop the machine, confirm zero speed, lock out/tag out
Stop the unit and wait for the controller to confirm zero speed (do not judge by sound). Isolate main power and apply lockout/tagout. Criterion: controller shows zero speed, no inertial rotation 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, have someone support the cover before the last fastener is released to prevent it dropping suddenly.Remove the old element and inspect for dust tracks
Pull out the old element. It is heavy — support it to avoid crushing or deforming the filter paper. Look for dust track bands on the housing inner wall — these indicate seal bypass, meaning unfiltered air has bypassed the seal. Criterion: no dust tracks on the inner wall means the seal was good.Clean the housing and sealing surface
Wipe the housing inner wall, base, and sealing surface with a dry lint-free cloth. Do not blow compressed air hard into the housing interior (this drives dust into the inlet duct). Criterion: no loose dust on the inner wall; sealing surface flat with no pits or corrosion pitting.Verify the new element
Compare with the old part item by item: part number, dimensions, seal integrity, undamaged filter paper. Criterion: part number and dimensions must match before installation; dimensions for this element should be confirmed by measurement (see Section 3).Install 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 centered without skew. Criterion: even compression marks around the sealing face.Refit the cover and check the differential pressure gauge impulse lines
Refit the cover and tighten evenly in stages in a diagonal sequence. Before startup, confirm the inlet differential pressure gauge impulse lines are clear, not blocked, and not frozen. Criterion: lines clear; a blocked impulse line gives a "false clean" reading and can lead to over-extended element use.Start per the centrifugal compressor procedure and verify
Start per the machine procedure. Once running steadily, read inlet differential pressure — it should return to the clean-element baseline range; listen for air leaks at the housing. Criterion: normal differential reading, no abnormal noise; record date, running hours, and differential reading.
Centrifugal-specific rule: the consequences of seal bypass are amplified on centrifugal machines. Screw compressors have oil to carry away some particles; centrifugal compression chambers are oil-free, so particles all deposit on the impeller and coolers — one seal failure can mean one impeller dynamic balancing job.
Frequently Asked Questions
Which machines use 67754101?
Ingersoll Rand Centac centrifugal air compressors — Centac, Centac C Series, and CN Series. The Centac family spans a wide range, so exact fitment requires the machine nameplate and serial number for verification.
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 differential gauge takes priority — dust loading varies greatly by site, and fixed intervals either waste element life or run overdue.
How much does dust loading affect centrifugal efficiency?
Rising inlet negative pressure lowers inlet density; the machine must increase power to hold pressure and flow, raising specific power. Centac is a medium-to-large continuous-duty machine, so this annual energy cost usually far exceeds the element cost.
Can I blow it clean and reuse it?
No. This is a dry disposable element, not designed for cleaning. Back-blowing with compressed air damages the filter paper fiber structure and creates invisible channels that let unfiltered air pass — more dangerous than not replacing it.
What else should I check when replacing the element?
The inlet guide vane linkage, intake silencer, intercooler tube bundles, and housing sealing surface. On water-cooled models, also check the cooler water side for scale, which directly affects interstage temperature. Also be sure to check that the differential pressure gauge impulse lines are clear.
Can this element be interchanged with a screw compressor air filter?
No. At approx. 5.4 kg, it is 2–3 times the weight of a screw compressor air filter; its dimensions, filtration area, and resistance characteristics are designed for the high inlet volumes of centrifugal machines. The two are not interchangeable.
Are 67754101 and 67765362 the same part?
No. Both names include "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 — do not judge by name.
How do I confirm dimensions?
Use the measured old part (outside diameter, inside diameter, and height) or request a specification drawing from Ingersoll Rand. Do not cross-reference other part numbers by weight or appearance.
Do you have stock? 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. Exact timing is subject to stock and shipping schedule at the time of inquiry.
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 catalog; (3) read the part number on the old element itself. Step 3 is the most reliable.
Compatible Machine Models
This part number fits Ingersoll Rand Centac centrifugal air compressors. Compatibility is as follows:
| No. | Compatible Model | Notes |
|---|---|---|
| 1 | Centac | Main centrifugal series, including multi-stage, multi-pinion gear-driven construction |
| 2 | Centac C Series | Common models C400, C700, C700e, C1000, C2000, C3000, etc. |
Centac background
Centac is Ingersoll Rand's centrifugal compressed air machine brand, using multi-pinion internal gear drive and multi-stage compression. Output flow covers approximately 720–51,000 m³/h depending on model, with pressure range approximately 0.7–22.5 bar. The units are 100% oil-free and commonly hold ISO 8573-1 Class 0 oil-free certification, used in electronics, pharmaceutical, petrochemical, and textile industries where air quality is critical.
Reading notes
- The table above is a compatibility range; individual fitment must be confirmed with the machine nameplate and serial number.
- Large Centac machines usually have multiple filter elements in the inlet system; the number per machine depends on the model. Confirm the element count before ordering.
- If unsure which series the machine belongs to, provide a nameplate photo and we will cross-check by serial number.
Related Components
Seven components in the Centac inlet and lubrication systems are maintained on the same cycle as the air filter. They are listed below by location, function, and inspection points. For specific part numbers, refer to the machine Centac parts manual.
| Component | Location | Function | Inspection Points |
|---|---|---|---|
| Intake Air Filter Core | Inlet filter housing | A different part number with a similar name (67765362 in this manual) | Verify the number on the part; do not confuse with 67754101 |
| Differential Pressure Gauge | On the inlet filter housing | Indicates element dust loading; the authoritative basis for replacement timing | Check needle returns to zero; impulse lines must be clear and not frozen |
| Inlet Guide Vane Assembly | Downstream of filter, upstream of first-stage impeller | Regulates inlet flow and angle for capacity control | Check linkage for binding or looseness; vane fouling affects control accuracy |
| Intake Silencer | In the inlet duct | Reduces inlet noise; on some models also straightens airflow | Check for corrosion perforation and loose silencing material |
| Intercooler Tube Bundles | Between compression stages | Reduces interstage air temperature; a key factor in centrifugal efficiency | Check air side for fouling; on water-cooled models also check water side for scale |
| Aftercooler | After final stage discharge | Cools discharge air to 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 compression chamber) | Test oil per machine requirements; monitor oil level and temperature |
Recommended companion replacement: Centrifugal maintenance value is concentrated in efficiency retention. When replacing the inlet element, also inspect the inlet differential pressure gauge, guide vane mechanism, and intercooler condition to make full use of the shutdown window. Cooler cleaning and impeller inspection should be included in annual planned maintenance — do not wait for a noticeable efficiency drop.