Ingersoll Rand 88111901 Air Filter Element | SSR M37/M45 Screw Compressor

Product Overview

The 88111901 air filter element is a genuine Ingersoll Rand intake filter element engineered for SSR M37, SSR M37 B, SSR M45 and MM45 series screw air compressors. Built with high-efficiency synthetic fibre media, it blocks dust, dirt and airborne particles from entering the screw airend, protecting rotors, bearings and shaft seals from wear and extending compressor service life.

As a factory intake filtration component for the Ingersoll Rand SSR range, the 88111901 is manufactured to Ingersoll Rand global technical standards. Its low initial resistance, high dust-holding capacity and straightforward installation make it a core consumable for routine maintenance of SSR M37–M45 compressors.

Basic Specifications

Item	Value
Part Number	88111901
Brand	Ingersoll Rand
Component	Air filter element
Product line	CC
Product class	P266
Lead time	Approx. 150 days (factory order)
Unit of measure	EA (each)
Status	Normally supplied

Technical Data

Filtration performance

Parameter	Value
Filtration rating	Approx. 5 μm
Filtration efficiency	Approx. 98% @ 5 μm
Filter class	F5 (medium-efficiency primary filtration, per EN 779 / ISO 16890)
Dust-holding capacity	Approx. 0.30–0.40 kg at rated flow and final resistance
Beta ratio β	β₅ ≥ 100

Notes: values above are typical for Ingersoll Rand SSR M37/M45 air filter elements of this class; refer to factory test data for exact figures.

Flow and resistance

Parameter	Value
Rated air flow	Approx. 6–8 Nm³/min (for 37–45 kW models)
Initial pressure drop	Approx. 200–250 Pa at rated flow, clean condition
Operating differential pressure	250–450 Pa
Alarm / final resistance	Alarm: 550 Pa; final resistance: 650 Pa (replace immediately)
Pressure drop vs. energy	Every 100 Pa rise in intake pressure loss increases compressor specific power by approx. 0.4%

Dimensions and installation

Parameter	Value
Overall dimensions	Approx. φ150 × φ80 × 200 mm (OD × ID × height, reference)
Effective filtration area	Approx. 1.2–1.5 m² (pleated element unfolded area)
Pleats / pleat pitch	Approx. 60–80 pleats, pitch approx. 7–8 mm
Mounting interface	Centre through-hole, stud-fixed installation
Sealing	Polyurethane (PU) end-cap gasket, double-sided seal

Notes: dimensions are reference values for Ingersoll Rand SSR M37/M45 air filter elements of this class; physical measurement is recommended for confirmation.

Material construction

Parameter	Value
Filter media	Synthetic fibre media (imported high-efficiency filter paper)
Media weight	Approx. 100–120 g/m²
Inner/outer support	Galvanised metal inner support mesh; outer protective mesh
End caps	Polyurethane (PU), oil- and ageing-resistant
Seal	Polyurethane foam gasket, integrally moulded with the end cap
Bonding	Polyurethane adhesive bonding end caps to media; heat-resistant, no debonding

Operating conditions

Parameter	Value
Operating temperature	Continuous: -20°C to 80°C; short-term peak 100°C
Relative humidity	≤95% RH, no condensation
Collapse pressure resistance	Overall collapse differential pressure ≥ 3.0 kPa
Special features	Low resistance, high dust-holding capacity, suitable for continuous industrial duty

Service life and maintenance

Parameter	Value
Service life	Approx. 4,000 hours (8–12 months) under standard conditions; 2,000–3,000 hours in high-dust environments
Shelf life	36 months in original sealed packaging, dry ambient temperature

Standards referenced

• ISO 5011 — inlet air filter performance testing for internal combustion engines and compressors (efficiency and dust-holding capacity)
• ISO 16890 / EN 779 — classification of general ventilation air filters
• GB/T 14295 — air filters
• GB/T 6165 — air filter performance test methods (efficiency and resistance)

Maintenance and Installation

Replacement intervals

• Standard conditions: every 4,000 hours, or every 8–12 months, whichever comes first
• High-dust conditions (mining, building materials, woodworking shops): every 2,000–3,000 hours
• Replace immediately if visual inspection shows blackened media, heavy dust build-up, or a differential pressure of 650 Pa

Installation steps

1. Shut down and isolate: switch off the main compressor power supply, apply lockout/tagout (LOTO), and confirm the unit has fully stopped.
2. Open the filter housing cover: release the retaining nut or clip on the air filter cover and remove the top cover.
3. Remove the old element: pull out the old 88111901 element and check whether the centre gasket remains in the housing groove.
4. Clean the housing: wipe the inner wall and sealing face of the filter housing with a clean cloth to remove dust and debris. Never reverse-blow and reuse an old element.
5. Inspect the new element: verify part number 88111901, check the media for damage, pleat deformation, cracked end caps or perished gaskets.
6. Fit the new element: slide the new element onto the centre retaining stud and ensure the gasket seats correctly top and bottom, without skewing or twisting.
7. Refit the cover: replace the cover and tighten the nut or clip evenly to ensure a gap-free seal.
8. Start-up check: start the compressor, listen for air leaks at the filter housing and confirm normal operation.

FAQ

Q1: Is the 88111901 a genuine Ingersoll Rand part?

A: The 88111901 is a genuine Ingersoll Rand component, manufactured to Ingersoll Rand global technical standards and suited to Ingersoll Rand 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 about your model, provide the machine serial number and we will match it precisely.

Q3: How do I know when the air filter element needs replacing?

A: Replace it in any of three cases: ① visual inspection shows blackened media or heavy dust build-up; ② operating differential pressure reaches the 550 Pa alarm value; ③ the 4,000-hour or 8–12 month replacement interval is reached.

Q4: What happens if the air filter element is left too dirty?

A: A clogged element causes insufficient intake, reduced discharge volume, higher specific power and increased energy consumption. In severe cases, dust enters the airend, wearing rotors and bearings and ageing shaft seals, which can raise oil carry-over or even scrap the airend.

Q5: Can the 88111901 be interchanged with other SSR air filter elements?

A: SSR models of different power ratings use different element dimensions and rated air flows, so they are not freely interchangeable. Confirm the correct part number using the machine serial number.

Compatible Models

Series	Models
SSR M series	SSR M37, SSR M37 B
SSR M series	SSR M45
MM series	MM45

Compatibility data is drawn from the Ingersoll Rand factory parts system. To confirm that a specific machine is covered, provide the compressor serial number and we will check it for you.

Related Parts

Part Number	Name	Notes
89295976	Air filter element	R4–R11 series small screw compressors
88171913	Air filter element UP5-11C-8	UP5 series small screw compressors
24578023	Air filter element 5–11 kW	R series 5–11 kW
46856837	Air filter element V 15–22 kW	V series 15–22 kW
88111901	Air filter element SSR M37	This page

Note: technical values marked as reference are typical industry data for Ingersoll Rand SSR M37/M45 air filter elements of this class; exact dimensions and performance are subject to Ingersoll Rand factory test reports. For a 100% accurate match, provide the complete compressor serial number so we can check the factory parts diagram and confirm current supply. Request a quotation or datasheet for volume, packing and lead-time details.