Description
The 1616677082 is the OFS E-22 compression element for Atlas Copco oil-free screw compressors. It belongs to the compact end of the oil-free element range: 54 x 40 x 32 cm and 49 kg, a stage that compresses air with no oil in the chamber from a package that moves with ordinary workshop handling. The element carries the full compression duty of the machine it serves, so its condition shows up directly in delivered pressure, power draw and air quality.
This page records the identification and physical data for the 1616677082, explains how an oil-free screw element does its work, and sets out what a renewal involves from enquiry to installation. The sections are written for maintenance planners and parts buyers who need the facts in one place before the order goes in.
Reading the OFS E-22 Designation
OFS is the Atlas Copco family mark for Oil-Free Screw elements. The letter and number that follow identify the size class, so the designation places the 1616677082 within the family before the ordering number is even read. The element carries both identifiers: OFS E-22 on the documentation, the complete 1616677082 on the element plate. One describes the component, the other selects it.
For purchasing, the complete number is the reference that counts. Parts systems, quotations and order confirmations all key on the 1616677082, and quoting it removes the ambiguity a designation alone leaves open. When an enquiry arrives with the full number, the identification is already settled, and everything after that is confirmation and scheduling.
The plate on the element is worth a second look at every service interval. It carries the complete 1616677082 reference together with the serial number, and those two lines describe exactly which component is fitted and which physical unit it is. A clear photograph of the plate, taken while the machine is open for routine service, gives the maintenance office everything needed to prepare the next quotation long before the renewal date arrives.
Technical Specifications
The tables below list the data recorded for the 1616677082 as supplied through the service channel.
Part Identification
| Parameter | Value |
|---|---|
| Item number | 1616677082 |
| Description | OFS E-22 |
| Product group | Oil-free screw element |
| Country of origin | Belgium |
| Tariff code | 8414900090 |
| Serialized | Yes |
Dimensions and Weight
| Parameter | Value |
|---|---|
| Length | 54 cm |
| Width | 40 cm |
| Height | 32 cm |
| Weight | 49 kg |
Each 1616677082 leaves the factory serialized, and the number on the plate ties the physical unit to its documentation through installation and every service event after it. Recording the serial in the machine’s maintenance file keeps the element’s history readable years later: when the stage is next due, the file states what is fitted, when it went in and what was supplied with it.
How an Oil-Free Screw Element Compresses
An oil-free screw element such as the 1616677082 runs with the compression chamber sealed off from lubrication. Air enters through the inlet port, the meshed rotor pair reduces its volume as the chambers turn, and the compressed air leaves through discharge without injected oil anywhere in the path. The rotors turn inside a non-contact gap, protected by an anti-friction coating on the rotor surfaces, and timing gears hold the two rotors in phase so the profiles never touch. Nothing in that sequence introduces oil to the air, and nothing downstream has to undo what the element left out.
Keeping oil on its own side of the chamber boundary is the work of the bearings and shaft seals. The lubricated components sit outside the air path, and the seals between the two sides hold that line for the life of the element. Because the separation is built into the design rather than added by downstream filtration, the air that leaves the 1616677082 is the air that entered it, compressed and dry — and that property is what the processes downstream of the machine depend on.
The Air-Quality Duty the Element Carries
Compressed air that touches product, packaging or process equipment carries the element’s condition with it. Atlas Copco oil-free screw compressors are built for air classified under ISO 8573-1 Class 0, the strictest oil-content class in the standard, and the 1616677082 is the component that holds that classification in service. Food and beverage lines, pharmaceutical production, electronics plants and laboratories specify oil-free air because a trace of lubricant in the supply damages the product or the measurement. In each of these plants the element is the part whose renewal restores the boundary the process was designed around.
For the maintenance planner, that duty shapes the renewal decision. A stage that is slipping on delivery is already a cost question; a stage inside a classified air system is also a compliance question, and the two arrive together. When the readings point at the element, the 1616677082 is ordered and the change is made before the air-quality margin, not just the delivery figure, is spent. Plants that treat the renewal this way close both questions with one work order.
What the Compact Format Changes
The 49 kg mass of the 1616677082 sets it apart from the large formats in the oil-free family, and the difference shows first in handling. A stage of this weight moves with ordinary workshop equipment: a pallet truck to the machine, a light hoist or a second pair of hands for the final set. No crane survey, no floor-loading calculation, no route walked in advance for a multi-tonne lift. The changeover work concentrates on the mechanical connections rather than the lift itself.
Compact size also simplifies staging on site. A stage of 54 x 40 x 32 cm occupies a fraction of the floor space of its larger siblings, arrives crated rather than rigged, and slots into service areas where a large element simply has no room to maneuver. For plants running several compressors in one room, that footprint is a practical advantage at every service interval, not only at renewal.
What the format does not change is the assembly principle. The 1616677082 goes in as one complete unit — housing, coated rotor pair, timing gears, bearing sets and shaft seals — so there is no on-site internals work and no loose parts to build from. Whether a stage weighs 49 kg or several tonnes, the renewal logic is the same: exchange the assembly, restore the oil and air boundary, restart the element’s service life.
Wear and the Case for Timely Renewal
An element wears slowly, and the operating data moves before anything breaks. Free air delivery slips against the same power input. Specific energy climbs, so the machine pays more kilowatt-hours for each cubic meter of air. Discharge temperature drifts upward as internal clearances open, and noise or vibration at the stage sharpens as bearing clearances grow. Each of these readings has alternative causes in the surrounding system, so the coolers, filters and control behavior are ruled out before the 1616677082 is charged with the fault.
The trend matters more than any single reading. A slow climb across months of logs tells one story; a step change after a cooler blockage tells another, and the log separates them. Bearing fatigue left to run its course ends with the rotors in contact, and an element that has reached that point comes out as scrap, not as a rebuild. Renewing the 1616677082 on condition — ordered against the confirmed number and fitted inside a planned window — avoids that ending and restores the machine’s rated delivery in one operation.
Planning the Changeover
A renewal of this scale is a short, well-defined job when it is planned. The new 1616677082 stays in its crating until it stands at the machine, and the port caps stay on until connection so nothing enters the rotor chamber. Mounting faces are cleaned, ducting and fastener torques follow the values in the compressor manual, and the shaft seal surfaces are handled with the care any precision component deserves. With the old element out, the serial numbers of both stages go into the maintenance record — one retired, one installed.
The shutdown window for a compact stage is measured in hours rather than days, and that is the practical advantage of the format: the change fits into a scheduled service stop instead of demanding a dedicated plant shutdown. The 1616677082 arrives ready for exactly this kind of short, scripted stop — crated, capped and complete. Planned this way, the renewal is a routine entry in the maintenance calendar rather than a response to a failure.
Ordering the Correct Element
Two details close the identification: the part number and the machine. The 1616677082 is read from the plate on the old element, the machine parts list or a previous quotation, and the compressor is identified by the model and serial number on its nameplate. Send the pair together and the match is confirmed in one pass — no chain of follow-up questions between departments. Quoting the 1616677082 in the first message is what makes that single-pass confirmation possible.
Where the plate on the old stage has worn past reading, the nameplate details still identify the machine, and the parts documentation for that serial carries the element reference. Either route ends in the same place: the correct 1616677082 on order, the identification already settled, and the changeover scheduled into the window the maintenance team has set.
FAQ
What does OFS E-22 stand for?
OFS is the Atlas Copco family mark for Oil-Free Screw elements, and E-22 identifies the size class of this stage within the family. The complete ordering reference is 1616677082, and that number is what identifies the part in quotations, order confirmations and the parts documentation.
How heavy is the 1616677082, and what handling does it need?
The 1616677082 measures 54 x 40 x 32 cm and weighs 49 kg, a package moved with ordinary workshop equipment — a pallet truck to the machine and a light hoist or a second pair of hands for the final positioning. No crane arrangement is involved, which keeps the changeover focused on the mechanical work.
How do I confirm the 1616677082 matches my compressor?
Read the number from the plate on the element being replaced, or take the model and serial number from the compressor nameplate. Send either or both, and the 1616677082 is checked against the parts documentation before the order is placed. One message with those details is enough.
What happens if a worn element stays in service?
Delivery and efficiency fall first, and the machine pays more energy for the same air. Bearing fatigue left to run on ends with the rotors in contact, and an element at that stage is replaced rather than rebuilt. Renewing the 1616677082 on condition avoids the unscheduled stop and restores rated output in one planned operation.
Is the element supplied as a complete assembly?
Yes. The 1616677082 is delivered as one unit with housing, coated rotor pair, timing gears, bearings and shaft seals in place, so the renewal is an assembly exchange rather than an on-site rebuild. The unit is serialized, and the plate number links it to its documentation through installation and service.
Does the E-22 size class alone tell me the element fits my machine?
No. The size class describes the component; fitting is settled by the complete number and the machine identity. The 1616677082 is confirmed against the plate on the element being replaced or against the compressor nameplate details, and that check closes the question before the order is placed.
Joseph Mwangi –
We quoted the 1616677082 against the number on the plate of the element we were replacing, and the match was confirmed before anything was ordered. The new stage arrived crated and complete, and at 49 kg our two technicians moved it into position with the shop hoist instead of booking a crane. The ports stayed capped until connection, the torque values came straight from the manual, and the compressor was back on line within the same shift with delivery back at its rated figure. A clean, well-organized exchange from quotation to restart.