Ingersoll Rand 88111901 Air Filter Element | SSR M37/M45 OEM Intake Filter

Product Overview

The 88111901 air filter element is a genuine Ingersoll Rand intake filter designed for SSR M37, SSR M37 B, SSR M45 and MM45 series screw air compressors. Its high-efficiency synthetic fibre media blocks dust and airborne particles before they reach the airend, protecting rotors, bearings and shaft seals from abrasion and extending compressor service life.

Built to Ingersoll Rand global technical standards, the 88111901 combines low initial pressure drop with high dust-holding capacity and straightforward installation. It is a core consumable for routine maintenance across the SSR M37–M45 range.

Key Specifications

Filtration Performance

• Filtration rating: approx. 5 μm
• Filtration efficiency: approx. 98% @ 5 μm
• Filter class: F5 (medium-efficiency pre-filter, per EN 779 / ISO 16890)
• Dust-holding capacity: approx. 0.30–0.40 kg at terminal resistance under rated flow
• Beta ratio: β₅ ≥ 100

Flow and Pressure Drop

• Rated air flow: approx. 6–8 Nm³/min (37–45 kW models)
• Initial pressure drop: approx. 200–250 Pa clean, at rated flow
• Operating differential range: 250–450 Pa
• Alarm point: 550 Pa; terminal resistance: 650 Pa (replace immediately)
• Energy impact: each additional 100 Pa inlet loss raises specific power by approx. 0.4%

Construction and Materials

• Media: synthetic fibre (imported high-efficiency filter paper), approx. 100–120 g/m²
• Support: galvanised metal inner cage with outer protective mesh
• End caps: polyurethane (PU), oil and ageing resistant
• Seal: PU foam seal, integrally moulded with the end cap
• Bonding: PU adhesive, temperature resistant, no delamination

Operating Conditions and Service Life

• Continuous operating temperature: -20°C to 80°C; short-term peak 100°C
• Relative humidity: ≤95% RH, no condensation
• Collapse pressure resistance: ≥3.0 kPa
• Service life: approx. 4,000 hours (8–12 months) in standard conditions; 2,000–3,000 hours in high-dust environments
• Shelf life: 36 months in unopened packaging, dry ambient storage

Standards

• ISO 5011 — intake filter performance testing (efficiency and dust capacity)
• ISO 16890 / EN 779 — general ventilation air filter classification
• GB/T 14295 — air filters
• GB/T 6165 — air filter performance test methods (efficiency and resistance)

Installation and Maintenance

Replacement Interval

• Standard conditions: every 4,000 hours or 8–12 months, whichever comes first
• High-dust conditions (mining, building materials, woodworking): every 2,000–3,000 hours
• Replace immediately if the media is visibly blackened or heavily loaded, or if differential pressure reaches 650 Pa

Installation Steps

1. Shut down and isolate the compressor main power; apply lock-out/tag-out (LOTO) and confirm the unit has fully stopped.
2. Release the retaining nut or clips and remove the air filter housing cover.
3. Withdraw the old 88111901 element and check whether the centre seal remains in the housing groove.
4. Wipe the housing interior and sealing face with a clean cloth. Never reverse-blow an old element with compressed air for reuse.
5. Inspect the new element: confirm part number 88111901, check media for damage, pleat deformation, cracked end caps or aged seals.
6. Fit the new element onto the centre retaining stud, ensuring the seal seats correctly top and bottom without skew or twisting.
7. Refit the cover and tighten the nut or clips evenly so the seal closes with no gap.
8. Restart the compressor and check for air leakage at the filter housing and normal operation.

Frequently Asked Questions

Q1: Is the 88111901 a genuine Ingersoll Rand part?
A: Yes. The 88111901 is a genuine Ingersoll Rand part manufactured to Ingersoll Rand global technical standards for SSR M37/M45 series compressors.

Q2: Which compressors does the 88111901 fit?
A: It fits Ingersoll Rand SSR M37, SSR M37 B, SSR M45 and MM45 series screw compressors. If you are unsure, provide the compressor serial number and we will confirm exact fitment.

Q3: How do I know when to replace the air filter element?
A: Replace it when any of the following applies: the media is visibly blackened or heavily loaded; differential pressure reaches the 550 Pa alarm point; or the 4,000-hour / 8–12 month interval is reached.

Q4: What happens if the element is not replaced in time?
A: A clogged element restricts intake air, reducing discharge volume and raising specific power and energy consumption. In severe cases dust enters the airend, wearing rotors, bearings and seals, which raises oil carry-over and can lead to airend failure.

Q5: Can the 88111901 be interchanged with other SSR filter elements?
A: No. Elements differ in dimensions and rated flow across power ranges. Always confirm the correct part number against the compressor serial number.

Compatible Models

• SSR M series: SSR M37, SSR M37 B
• SSR M series: SSR M45
• MM series: MM45

Fitment data is drawn from the Ingersoll Rand OEM parts system. To confirm your specific machine, provide the compressor serial number and we will verify the correct part number and current supply status.

Related Parts

• 89295976 — air filter element, R4–R11 small screw compressors
• 88171913 — air filter element, UP5-11C-8, UP5 series
• 24578023 — air filter element, 5–11 kW, R series
• 46856837 — air filter element, 15–22 kW, V series
• 88111901 — air filter element, SSR M37 (this page)

Note: Values marked as approximate reflect typical industry data for Ingersoll Rand SSR M37/M45 class air filter elements. Final dimensions and performance are subject to the Ingersoll Rand OEM test report. For a 100% exact match, send the full compressor serial number and we will check the OEM parts diagram and confirm the latest supply information.