1616657593 (=1616657583): OIS F-05(C55)

The Atlas Copco 1616657593 (=1616657583) OIS‑F‑05‑C55 air‑end is an original‑equipment rotary screw compressor element, serving as the core compression component for selected Atlas Copco stationary screw air compressors. With cross‑reference interchangeable part numbers including 1616657580, 1616657581 and 2989016400, this air‑end is widely used for original assembly, equipment overhaul and replacement repair jobs for field and workshop compressors.

Product Overview

As the heart of oil‑injected screw air compressors, the OIS‑F‑05‑C55 air‑end delivers compressed air via precision‑machined male and female rotor pairs. It converts mechanical drive power into high‑pressure compressed air, determining overall compressor efficiency, air output, noise level and long‑term service life.

This screw element is engineered for medium‑duty industrial compressors. When your existing compressor suffers rotor wear, internal leakage or capacity drop, replacing with a genuine OIS‑F‑05‑C55 air‑end restores your machine back to factory‑level performance.

Technical Specifications

Performance Features

Precision Rotor Manufacturing

The male and female screw rotors adopt high‑precision profile grinding process. Optimized rotor clearance minimises internal air leakage, delivering stable free‑air delivery while lowering specific power consumption. The robust rotor profile extends working lifespan under continuous heavy‑load cycles.

Heavy‑Duty Bearing Configuration

High‑quality heavy‑duty bearings are fitted to support the rotating rotors. The bearing layout absorbs radial and axial stress generated during compression cycles, resisting shock loads common on mobile compressor applications. Proper lubrication helps achieve long service intervals and reduces unexpected breakdown risk.

Oil‑Injected Compression Structure

Built for oil‑injected screw compression principle. Injection of compressor oil performs cooling, sealing and lubrication inside the compression chamber. It keeps discharge temperature stable, seals rotor‑to‑rotor and rotor‑housing gaps, and suppresses operating noise during continuous running.

Full Inter‑Part Compatibility

Multiple interchangeable OEM part numbers refer to this identical air‑end assembly:

Primary PN：1616657593, 1616657583
Cross‑ref PN：1616657580, 1616657581, 2989016400

Before ordering, always cross‑check the original part number printed on your old air‑end nameplate to avoid model mismatch.

This air‑end fits units working on construction sites, road maintenance, municipal repair and mobile field service environments, where compressors face vibration, dust and varying ambient temperatures.

Installation & Maintenance

1. Professional Installation Required: Air‑end replacement demands professional compressor technicians. Correct alignment of drive coupling, torque values for bolt sets and oil‑circuit connection are critical. Poor fitting will cause overheating, abnormal noise or premature bearing failure.

2. Use Recommended Lubricant: Fill with Atlas Copco specified air compressor oil only. Wrong lubricant leads to carbon deposit, rotor fouling and shortened service life.

3. Check Associated Components: During air‑end swap, inspect oil separator, oil filter, air filter, shaft seal and cooling components. Worn auxiliary parts may damage your new air‑end. The matching shaft seal service kit reference is 2901056100 for C55 series air‑end.

4. Test Run After Assembly: Complete pressure‑holding test, leak inspection and temperature monitoring before putting the compressor back into full‑load production.

Why Choose Genuine OIS F‑05 Air‑End

Many fleets choose genuine Atlas Copco air‑ends rather than aftermarket copies. Original rotors and housings maintain designed efficiency: lower energy consumption, stable air output and predictable service life. Non‑genuine replacement elements often suffer profile deviation, higher leakage, louder noise and early‑stage failure, bringing higher total operating cost in the long run.

For compressor owners and service workshops, investing in the correct original OIS F‑05  air‑end protects your whole compressor investment and maximises equipment uptime.

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