Воздушный фильтр Ingersoll Rand 47701891001 (замена 39903281) | Ø380 мм, S90–S150, M185, RM185

⚠️ Part number update
47701891001 — official updated Ingersoll Rand number for the former 39903281.
Mounting dimensions, filtration accuracy and service life are fully identical — the parts are interchangeable.
When ordering, specify the new number 47701891001.

1. Product information

2. Technical specifications

Note on dimensions: outer/inner diameter and height are reference measured values. Factory tolerance ±2 mm; some batches specify the height as 180 mm. It is recommended to verify against the actual part before installation.

3. Compatible Ingersoll Rand models

S series — SSR S rotary screw oil-flooded compressors (90–150 kW)

M series — SSR M rotary screw oil-flooded compressors

RM Series — RM Screw Compressors (185 kW)

6 models in total: S90, S110, S150, M185, RM185i, RM185n.
All listed are classic medium- and high-power Ingersoll Rand industrial oil-flooded screw compressors.

Need a 100% exact match?
Provide the full compressor housing serial number — we will verify compatibility.

4. Price and delivery times

Wholesale inquiries are welcome, worldwide shipping.

5. Product Description

39903281 — air filter element for Ingersoll Rand SSR S, M and RM series screw compressors.

This part number has been officially superseded by 47701891001. Mounting dimensions, filtration accuracy and service life are completely identical; the parts are interchangeable without modification.

The filter is made of imported cellulose paper / fiberglass composite (Ahlstrom grade), filtration accuracy 5 ~ 10 μm, particle retention efficiency for particles >5 μm ≥ 98%. Combines high dust-holding capacity and low flow resistance — effectively protects the rotor from dust without increasing energy consumption.

Outer diameter ≈ 380 mm, inner diameter ≈ 199 mm, height ≈ 178 mm, net weight ≈ 1.75 kg. One piece is installed per compressor, recommended replacement — every 2000 hours or 1 year (whichever comes first).

6. Installation and Maintenance

Replacement Interval

Manufacturer's recommendation: 2000 hours or 1 year (whichever comes first).
In high-dust conditions (dusty workshops, construction sites), shorten the inspection interval to once a month.

Signs That Replacement Is Needed

• The intake resistance indicator is in the yellow zone and does not return after shutdown;
• Traces of dust are visible on the clean side of the filter housing;
• Air output steadily decreases and other causes are ruled out.

Not Subject to Washing or Reuse

A dry pleated filter must not be washed with water or blown with air — this destroys the pleat structure and reduces filtration efficiency. Replace with a new one.

Installation Procedure

1. Stop the machine, lock out and tag out, allow the housing to cool;
2. Open the intake-side housing panel, loosen the filter cover;
3. Grasping the end cap, remove the old filter;
4. Check the inner wall of the housing — traces of dust on the clean side indicate a seal failure; rectify before installing the new filter;
5. Wipe the sealing surface, install the new filter (align the inner diameter ≈199 mm with the intake pipe), do not overtighten;
6. Close the cover, make sure the resistance indicator has returned to the clean position;
7. Start the compressor, check that normal intake resistance is restored.

Direct interchangeability: 47701891001 and 39903281 have identical mounting dimensions; no housing replacement or modification is required — install according to the procedure above.

7. Frequently Asked Questions

Q1. What is the new part number for 39903281?
47701891001. This is Ingersoll Rand's official updated number for the former 39903281.

Q2. Are 39903281 and 47701891001 interchangeable?
Yes. Mounting dimensions, filtration accuracy and service life are completely identical; the parts are interchangeable.

Q3. What are the dimensions of 39903281?
Outer diameter ≈380 mm, inner diameter ≈199 mm, height ≈178 mm (with polyurethane end caps). Outer diameter tolerance ±2 mm.

Q4. What is the filtration accuracy of 39903281?
5 ~ 10 μm, particle retention efficiency for particles >5 μm ≥ 98%.

Q5. What filter material is used?
Impo

Q6. Which compressors is 39903281 suitable for?
For 6 models: SSR S — S90, S110, S150; M — M185; RM — RM185i, RM185n.

Q7. What is the difference between RM185i and RM185n?
i — fixed-speed model, n — variable-frequency model; the same air filter is used.

Q8. How often should this filter be replaced?
Recommended every 2000 hours or 1 year (whichever comes first). In dusty conditions the interval is shortened.

Q9. How many filters are needed per compressor?
1 pc.

Q10. How to determine if replacement is needed?
The intake resistance indicator turns yellow and remains in the yellow zone after shutdown.

Q11. Can 39903281 be washed and reused?
No. A dry pleated filter must not be washed with water or blown with air — this destroys the pleats and reduces filtration efficiency.

Q12. How can I verify exact compatibility with my machine?
Provide the full serial number of the compressor housing — we will perform an exact compatibility check.

8. Price Request

We accept wholesale orders, export documentation processing, and worldwide delivery.

For a fast and accurate quote, please specify:

• Compressor model (e.g., S110, RM185n)
• Or the full serial number of the housing (for 100% accurate compatibility verification)
• Required quantity

We will respond during business hours.