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

Product Overview

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. The element uses high-efficiency synthetic fiber media to block dust, dirt, and particulate matter from entering the screw airend, protecting rotors, bearings, and oil seals from wear and extending compressor service life.

As an original intake filtration component for the Ingersoll Rand SSR series, the 88111901 is manufactured to Ingersoll Rand global technical standards. It offers low initial pressure drop, high dust-holding capacity, and straightforward installation — 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
Status	Normally supplied

Technical Specifications

Filtration Performance

Parameter	Value
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 rated flow and final resistance)
Beta Ratio β	β₅ ≥ 100

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

Flow and Pressure Drop

Parameter	Value
Rated Air Flow	Approx. 6–8 Nm³/min (for 37–45 kW models)
Initial Pressure Drop	Approx. 200–250 Pa (clean, at rated flow)
Operating Differential Range	250–450 Pa
Alarm / Final Resistance	Alarm: 550 Pa; final: 650 Pa (must replace)
Pressure Drop vs. Energy	Every 100 Pa increase in inlet pressure loss raises specific power by approx. 0.4%

Dimensions and Installation

Parameter	Value
Dimensions	Approx. φ150 × φ80 × 200 mm (OD × ID × height, reference)
Effective Filter 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	Center through-hole, stud-fixed mounting
Sealing	Polyurethane (PU) end-cap gasket, double-sided seal

Note: Dimensions are reference values for SSR M37/M45 elements of this class; physical measurement is recommended for confirmation.

Material Construction

Parameter	Value
Media	Synthetic fiber media (imported high-efficiency filter paper)
Media Weight	Approx. 100–120 g/m²
Inner / Outer Support	Galvanized metal inner support mesh; outer protective mesh
End Caps	Polyurethane (PU) end caps, oil and aging resistant
Gasket	PU foam gasket, integrally molded with end cap
Bonding	PU adhesive bonds end caps to media; heat resistant, no debonding

Operating Tolerance

Parameter	Value
Operating Temperature	Continuous: -20°C to 80°C; short-term max 100°C
Relative Humidity	≤95% RH, no condensation
Collapse / Burst Pressure	Overall collapse differential ≥ 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 sealed original packaging, cool dry conditions

Standards

• ISO 5011: Inlet air cleaning equipment for internal combustion engines and compressors — performance testing (efficiency and dust capacity)
• ISO 16890 / EN 779: Classification of air filters for general ventilation
• GB/T 14295: Air filters
• GB/T 6165: Test methods for air filter performance (efficiency and resistance)

Maintenance and Installation

Replacement Interval

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

Installation Steps

1. Shut down and isolate: Turn off the main compressor power, apply lockout/tagout (LOTO), and confirm the unit has fully stopped.
2. Open the filter housing cover: Loosen the retaining nut or clips and remove the cover.
3. Remove the old element: Pull out the old 88111901 element and check whether the center gasket remains in the housing groove.
4. Clean the housing: Wipe the inner walls and sealing surfaces with a clean cloth. Never reverse-blow and reuse an old element.
5. Inspect the new element: Verify part number 88111901, check media for damage, pleat deformation, cracked end caps, or aged gaskets.
6. Install the new element: Slide it onto the center stud, ensuring the gasket seats evenly on both sides without skew or twist.
7. Refit the cover: Reinstall the cover and tighten the nut or clips evenly for 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 original part?

A: Yes, the 88111901 is a genuine Ingersoll Rand part manufactured to Ingersoll Rand global technical standards and designed 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 match it precisely.

Q3: How do I know when to replace the air filter element?

A: Replace when: (1) visual inspection shows darkening or heavy dust; (2) operating differential pressure reaches the 550 Pa alarm value; or (3) the 4,000-hour or 8–12 month interval is reached.

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

A: A clogged element restricts intake air, reducing discharge volume and increasing specific power and energy consumption. In severe cases, dust enters the airend, causing rotor and bearing wear and oil seal degradation, leading to higher oil carryover or even airend failure.

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

A: Different SSR power classes use different element dimensions and flow capacities and are not freely interchangeable. Always confirm the correct part number using the compressor 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 sourced from the Ingersoll Rand original parts system. To confirm fitment, provide the compressor serial number and we will verify it for you.

Related Parts

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

Important: Parameters marked as reference values 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 100% accurate matching, provide the complete compressor serial number and we will check the original parts diagram and confirm current supply information.