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

Product Overview

The 88111901 air filter element is a genuine Ingersoll Rand intake filter element engineered for SSR M37, SSR M37B, SSR M45, and MM45 series screw air compressors. Manufactured with high-efficiency synthetic fiber media, it effectively blocks dust, dirt, and airborne particles from entering the 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 produced to Ingersoll Rand global technical standards. It combines low initial resistance, high dust-holding capacity, and straightforward installation — making it a core consumable in routine maintenance of SSR M37–M45 compressors.

Basic Specifications

• 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 Parameters

1. Filtration Performance

• Filtration accuracy: 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: β₅ ≥ 100

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

2. Flow and Resistance

• 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 pressure range: 250–450 Pa
• Alarm / final resistance: Alarm at 550 Pa; final resistance 650 Pa (mandatory replacement)
• Pressure drop vs. energy: Every 100 Pa increase in inlet pressure loss raises specific power consumption by approx. 0.4%

3. Dimensions and Installation

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

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

4. Material Construction

• 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), oil- and aging-resistant
• Seal: Polyurethane foam gasket, integrally molded with end cap
• Bonding: Polyurethane adhesive bonds end caps to media; temperature-resistant, no debonding

5. Operating Tolerance

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

6. Service Life and Maintenance

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

7. Applicable Standards

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

Standard 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, etc.): every 2,000–3,000 hours
• Replace immediately if visual inspection shows darkening media, heavy dust accumulation, or differential pressure reaching 650 Pa

Installation Steps

1. Shut down and lock out: Switch off the main power supply, apply lockout/tagout (LOTO), and confirm the unit has fully stopped.
2. Open the air filter housing cover: Loosen the retaining nut or clip on the housing cover and remove the top 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 to remove dust and debris. Never blow back an old element with compressed air and reuse it.
5. Inspect the new element: Verify part number 88111901; check media for damage, pleats for deformation, end caps for cracks, and gasket for aging.
6. Install the new element: Slide the new element onto the center mounting stud, ensuring the gasket seats correctly on both sides without skewing or twisting.
7. Refit the cover: Reinstall the cover and tighten the nut or secure the clips 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.

Frequently Asked Questions

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

Q2: Which compressors does the 88111901 fit?
A: It fits Ingersoll Rand SSR M37, SSR M37B, 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 replacement?
A: Replace in three cases: (1) visual inspection shows darkening media or heavy dust; (2) operating differential pressure reaches the alarm value of 550 Pa; (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 causes insufficient intake, reduced discharge volume, higher specific power, and increased energy consumption. In severe cases, dust enters the airend, causing rotor and bearing wear and oil seal aging, leading to higher oil carryover or even airend failure.

Q5: Can the 88111901 be interchanged with other SSR air filter elements?
A: Air filter elements for different SSR power ranges have different dimensions and flow capacities and are not freely interchangeable. Always confirm the correct part number using the machine serial number.

Compatible Machine Models

• SSR M Series: SSR M37, SSR M37B
• SSR M Series: SSR M45
• MM Series: MM45

Compatibility data is sourced from the Ingersoll Rand original 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 series 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)

Important note: Parameters marked as "reference" are typical industry values for Ingersoll Rand SSR M37/M45 class air filter elements. Exact dimensions and performance are subject to Ingersoll Rand factory test reports. For 100% accurate matching, provide the full compressor serial number and we will check the original parts diagram and confirm the latest supply information.