Atlas Copco 1616753590 OIS F-09 (C55*) Oil-Injected Screw Service Element

Description

The 1616753590 is the Atlas Copco service element of the C55 F09 oil-injected screw stage. It carries the official designation SERVICE ELEMENT OIS F-09 (C55*) and serves a compact but widely used slice of the Atlas Copco range: the stationary G 7, G 11 and G 15, the VSD variants GA 5 VSD, GA 7 VSD, GA 11 VSD and GA 15 VSD, and the portable XAS27.

Atlas Copco pairs it with the production element 1616753580, and the current renewal direction inside the C55 family points to the C55 F14 service element, part number 1616965694. This page sets out the identity of the element, the machines it fits, the way the stage works and the figures you need before ordering.

Identity of the 1616753590 Service Element

Element ordering at Atlas Copco runs on two tracks, and this part sits on the service track. Understanding where the 1616753590 stands, and where the C55 family is heading, prevents most ordering mistakes before they happen.

Production and Service Part Numbers

The 1616753590 is the service ordering number for the C55 F09 oil-injected screw element, and 1616753580 is the production number used when the same stage goes into a new compressor at the factory. Both numbers name the same C55 F09 element. In practice you meet 1616753580 on machine documentation and inside the parts book of a new unit, while the 1616753590 is the number that an owner or service shop orders for a renewal.

The designation itself carries the family logic. OIS marks the oil-injected screw element family, F-09 identifies the stage size, and the C55* suffix links the module to the C55 compressor element class. Reading the designation together with the tag code on the old element is the fastest way to fix the identity of the part you need.

From C55 F09 to C55 F14: the Renewal Direction

The 1616753590 belongs to the C55 F09 generation, and Atlas Copco now directs like-for-like renewals in this family to the newer C55 F14 service element, part number 1616965694. The two stages belong to the same C55 element class, and the C55 F14 is the number Atlas Copco lists for current renewal orders. Existing C55 F09 installations still reference the 1616753590 in their documentation, so both numbers appear in real service work.

For planning purposes this means a plant running a G, GA VSD or XAS27 machine on a C55 F09 stage should expect the renewal conversation to land on the C55 F14 direction. Seadweer checks the old tag code and the compressor model before the order, so the quotation names the exact stage your build takes, whether that is the 1616753590 or the C55 F14 renewal.

The upgrade also affects spare-part strategy. Sites that hold the 1616753590 as a shelf spare for a C55 F09 fleet can keep it for the installed machines, while new renewal orders follow the C55 F14 direction. Mixing the two stages inside one plant is workable as long as each order is confirmed against the specific machine, and the fitment check with Seadweer is what keeps the two generations apart in the records.

Compressors That Use the 1616753590 Element

The confirmed machine list for this element spans two worlds: small stationary oil-injected screw compressors and one portable unit. Both sides share the same core stage, which is what makes the C55 F09 family service work straightforward.

Stationary G and GA VSD Models

Atlas Copco fits the 1616753590 element to the following stationary oil-injected screw compressors:

• G 7
• G 11
• G 15
• GA 5 VSD
• GA 7 VSD
• GA 11 VSD
• GA 15 VSD

The G models are fixed-speed units for general plant air, and the GA VSD models add variable speed drive so the element follows the air demand across its speed range. In every one of these machines the C55 F09 stage is the working core that turns motor power into compressed air, and the 1616753590 is the service number to order when that stage needs renewal.

The mix matters for fleet owners as well. A plant that runs a G 15 beside a GA 11 VSD, and a XAS27 on the service truck, carries one element identity across three machines, and the 1616753590 covers all of them. That commonality simplifies spare-part planning: one renewal stage, one set of handling data, one ordering conversation, whether the machine sits on the factory floor or on a trailer.

The Portable XAS27

The 1616753590 also serves the XAS27 portable air compressor. The XAS27 is a mobile unit in the Atlas Copco portable range, built around the same oil-injected screw element design as the stationary models above. The difference between the two worlds lies in the machine package, not in the core stage: chassis, enclosure and controls change, while the compression element stays the C55 F09 family. That is why one service element covers a factory G 11 and a construction-site XAS27 alike.

Confirming Fitment Before Ordering

Element renewal is the one spare-part order where the model name alone is not enough. Read the code on the old element tag, note the compressor model and serial, and send both to Seadweer. The team checks the number against the machine build and confirms whether your unit takes the 1616753590, the production number 1616753580 or the C55 F14 renewal 1616965694. One pass of verification removes the wrong-part risk entirely.

How the Oil-Injected Screw Stage Works

The C55 F09 is an oil-injected screw element, and its working principle explains both its efficiency and its service profile. Two intermeshing helical rotors spin inside a precision-bored housing. Injected oil seals the running clearances between the rotors, carries compression heat away and lubricates the bearings, so the rotors stay separated by an oil film rather than metal-to-metal contact.

Because the oil does three jobs at once, the stage holds its efficiency over long runs, and the wear concentrates in the bearings rather than in the rotors themselves. Air enters the element after filtration, is compressed along the rotor path, and leaves at the working pressure; the oil is removed downstream by the separator of the host machine. The 1616753590 renews this core as one serviced unit: the internal rotors, the precision housing, the bearing set and the shaft sealing arrive together, while oil separation, cooling, drive and control components stay part of the host machine.

Keeping the swap clean also depends on the surrounding service work. The oil circuit of the host machine is flushed and refilled at the same visit, the separator and filters are checked, and the new stage is run in under observation so the pressure band and oil temperature settle back to their normal readings. A renewal of the 1616753590 therefore lands as a complete stage restoration on the machine, not as an isolated part change, and the operating records of the compressor keep a clean before-and-after picture for the maintenance file.

Wear Signs and Renewal Timing

An oil-injected air end usually announces its aging through measured trends long before it fails outright, and the trends are readable with the instruments most plants already run.

Possible Warning Signs

Possible signs of element wear can include rising specific energy, drifting discharge pressure, unusual noise or vibration, higher oil temperature and metal traces in the oil sample. Specific power climbs first in many cases, because widening internal clearances let compressed air slip back instead of leaving the stage. Any one of these trends on a G, GA VSD or XAS27 machine is a reason to inspect the air end and plan the renewal around the 1616753590.

Timing the Renewal

Oil-injected elements are commonly overhauled somewhere in the 20,000 to 40,000 running-hour band as a family-level reference, but the real timing follows the condition of your machine and the applicable service documentation rather than a fixed hour target. Vibration checks, oil analysis and temperature trends predict bearing condition long before a fixed count is reached. A planned renewal with the 1616753590 beats an unplanned stop, because bearing fatigue left alone can let the rotors seize, which in most cases writes the element off instead of allowing a repair.

Technical Specifications

The tables below collect the identification and physical data of the 1616753590 in one place, exactly as the item data lists them.

Part Identification

Dimensions and Weight

The 18.60 kg weight and the 40 × 30 × 33 cm box make the 1616753590 a one-person handling job at the machine, which matters when the element is swapped inside a compact G or GA VSD enclosure. The figures are item data for handling and logistics reference, and Seadweer confirms the current package details with the quotation.

FAQ

What is the difference between 1616753590 and 1616753580?

Both numbers name the same C55 F09 oil-injected screw element. The 1616753580 is the production number fitted at the factory, and the 1616753590 is the service number ordered for a renewal.

Which compressors use the 1616753590 element?

The confirmed list covers the stationary G 7, G 11 and G 15, the GA 5 VSD, GA 7 VSD, GA 11 VSD and GA 15 VSD, and the portable XAS27. All are oil-injected screw machines built around the same C55 F09 stage.

What does the C55 F14 upgrade 1616965694 mean for my machine?

Atlas Copco now directs C55 F09 renewals to the C55 F14 service element, part number 1616965694. Your existing documentation still references the 1616753590, and Seadweer confirms which stage your build takes before the order.

How big and how heavy is the 1616753590?

The item data lists 40 × 30 × 33 cm and 18.60 kg. These figures describe the serviced element as packed, so the stage is manageable to handle at the machine during a planned swap.

How do I confirm the right element before ordering?

Read the code on the old element tag and note the compressor model and serial, then send both to Seadweer. The fitment check names the exact stage for your build, from the 1616753590 through to the C55 F14 renewal.

What are the signs that an air end needs renewal?

Possible signs can include rising specific energy, drifting discharge pressure, unusual noise or vibration, higher oil temperature and metal traces in the oil sample. Any of these trends is a reason to inspect the element and plan the renewal.

• 1616753590 is the genuine Atlas Copco C55 F09 oil-injected screw service element, designation OIS F-09 (C55*).
• It fits the stationary G 7, G 11, G 15 and GA 5-15 VSD ranges plus the portable XAS27.
• Production number 1616753580 and service number 1616753590 name the same stage.
• C55 family renewals are now directed to the C55 F14 service element 1616965694.
• Item data: 40 × 30 × 33 cm, 18.60 kg, country of origin Italy, tariff code 8414900090.
• Send Seadweer your old tag code and compressor model, and the exact element for your build is confirmed before the order.

More Air Ends Available

Other Atlas Copco air end models are available upon request. Please check the table below or contact us for details.