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

Product Overview

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

As an OEM inlet filtration component for the SSR range, the 88111901 is built to Ingersoll Rand global technical standards. It combines low initial resistance, high dust holding capacity and straightforward installation, making it a core consumable for routine maintenance of SSR M37–M45 machines.

Basic Specifications

• Part Number: 88111901
• Brand: Ingersoll Rand
• Part Name: Air Filter Element
• Product Line: CC
• Product Class: P266
• Lead Time: Approx. 150 days (factory order)
• Unit of Measure: EA
• Status: Normal supply

Technical Parameters

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 rated flow to final resistance
• Beta ratio: β₅ ≥ 100

Values above are typical for Ingersoll Rand SSR M37/M45 class air filters; refer to factory test data for specific figures.

Flow and Pressure Drop

• 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 range: 250–450 Pa
• Alarm / final resistance: alarm at 550 Pa; final resistance 650 Pa (replace immediately)
• Energy relationship: every 100 Pa increase in inlet pressure loss raises compressor specific power by approx. 0.4%

Dimensions and Installation

• Dimensions: approx. φ150 × φ80 × 200 mm (OD × ID × height, reference)
• Effective filtration area: approx. 1.2–1.5 m² (pleated media)
• Pleats / pleat spacing: approx. 60–80 pleats, spacing approx. 7–8 mm
• Mounting: center through-bolt, stud-fixed installation
• Sealing: polyurethane (PU) end-cap gasket, double-sided seal

Dimensions are reference values for SSR M37/M45 class filters; physical measurement is recommended for confirmation.

Material Construction

• Media: synthetic fiber filter media (imported high-efficiency paper)
• Media weight: approx. 100–120 g/m²
• Support: galvanized metal inner support mesh with outer protective mesh
• End caps: polyurethane (PU), oil and aging resistant
• Gasket: PU foam gasket, molded integrally with end cap
• Bonding: PU adhesive for end cap to media, temperature resistant

Operating Conditions

• Operating temperature: continuous −20 °C to 80 °C; short-term up to 100 °C
• Relative humidity: ≤95% RH, no condensation
• Collapse pressure resistance: ≥3.0 kPa overall
• Features: low resistance, high dust holding capacity, suitable for continuous industrial duty

Service Life and Storage

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

Standards

• ISO 5011: inlet air filter performance testing for engines and compressors (efficiency and dust 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 Interval

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

Installation Steps

1. Shut down and isolate: switch off the main power, apply lockout/tagout (LOTO) and confirm the machine has fully stopped.
2. Open the filter housing: release 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 wall and sealing surface with a clean cloth. Never reverse-blow and reuse an old element.
5. Inspect the new element: verify part number 88111901 and check for media damage, deformed pleats, cracked end caps or aged gaskets.
6. Install the new element: slide it onto the center stud and ensure the gasket seats evenly top and bottom without skewing or twisting.
7. Refit the cover: reinstall the cover and tighten the nut or clips evenly to achieve a gap-free seal.
8. Start-up check: start the compressor and listen for air leaks at the filter housing; confirm normal operation.

FAQ

Q1: Is the 88111901 a genuine OEM part?
A: Yes. The 88111901 is an original 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 about your model, provide the machine serial number and we will confirm exact fitment.

Q3: How do I know when to replace the air filter element?
A: Replace it when: (1) visual inspection shows blackened or heavily loaded media; (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 is too dirty?
A: A clogged element restricts inlet air, reducing discharge volume and raising specific power and energy consumption. In severe cases, dust enters the airend, wearing rotors and bearings and aging shaft seals, which can increase oil carryover or even scrap the airend.

Q5: Can the 88111901 be interchanged with other SSR air filters?
A: No. SSR models of different power ratings use different filter dimensions and flow capacities. Always confirm the correct part number by machine serial number.

Compatible Models

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

Fitment data is based on the Ingersoll Rand OEM parts system. To confirm your specific machine, provide the compressor serial number and we will verify it for you.

Related Parts

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

Note: Items marked as reference values are typical industry data for Ingersoll Rand SSR M37/M45 class air filters. For 100% exact matching, please provide the complete compressor serial number so we can check the OEM parts diagram and confirm current supply. Request a quotation, datasheet or sample for your project.