Atlas Copco 1616718687 O.F.S. K-27 Oil-Free Screw Element

Description

The 1616718687 is the OFS K-27 oil-free screw element in the Atlas Copco parts programme, supplied as one complete exchange unit built in Belgium under ERP reference ECB AIF 1539. This page covers the Atlas Copco 1616718687 element as a single ordered spare: what it does inside the compression stage, which machines it fits, and how a correct replacement is ordered, received, and installed. The element is the heart of an oil-free screw compressor. When its rotors, seals, or bearings reach the end of their service life, output falls and the compression stage can no longer hold its rated delivery, and the complete element exchange is the way the machine returns to its original performance.

The sections below set out the official data record for the element, the machines it fits, and the practical steps around ordering and fitting. The aim is that a planner can check every value against the ERP record and the machine parts list before committing to the exchange.

What the OFS K-27 Element Does in the Machine

An oil-free screw compressor compresses air between two meshing rotors without any oil in the compression space. Timing gears keep the rotors at the correct clearance, and seals isolate the bearings and gears from the air path, so the delivered air stays oil-free. The 1616718687 OFS K-27 element is the complete compression stage built around that rotor pair: rotors, casing, timing gear end, and bearing set, assembled and sealed as one unit.

Over its service life the 1616718687 element wears in predictable ways. Rotor coatings thin, seal faces lose their contact, and bearing clearances open up. The symptoms appear in the machine data before they appear in the air: rising element discharge temperature, a slow drop in free air delivery at a given pressure, and an increase in power drawn for the same output. When those trends confirm wear, the scheduled response is the complete element exchange, not a partial rebuild inside the casing.

The exchange philosophy matters for planning. A complete 1616718687 unit arrives as a sealed, factory-assembled stage, so the downtime is the mechanical swap plus the gasket renewal around it. There is no rotor re-coating, no on-site bearing fitting, and no re-sealing of the old casing in the field. The 1616718687 exchange therefore shortens the stop to the mechanical work alone.

Official Specifications of the 1616718687

The values below are the official ERP record for the 1616718687 OFS K-27 element. Only confirmed figures are listed.

Three points in this record deserve a comment. First, the ERP carries the internal reference ECB AIF 1539 against this item, recorded in both the text field and the short description of the part; it identifies the element inside the Atlas Copco product company structure and belongs on the order enquiry alongside the part number. Second, the weight of 154 kg and the 60 × 42 × 45 cm frame put the K-27 in the middle size class of the oil-free screw programme, small enough for a two-person mechanical lift with standard rigging but heavy enough to plan the access route before the stop. Third, the element is serialized, which means the unit fitted to a machine is tracked by its own number through the Atlas Copco service system, and the ERP lists the 1616718687 under that serialized regime.

Machines That Use the 1616718687 Element

The 1616718687 OFS K-27 element serves the ZR 90 in the Atlas Copco oil-free rotary screw range, the ZT 132-10-50E and ZT 132-10-50D packages, and the PTS 800 and PTE 900 VSD+ portable oil-free series. On each of these machines, a worn compression stage is renewed by exchanging the complete element. The machine model and serial number travel with the enquiry, and the parts system confirms the exact build variant together with the gaskets and seals the same stop calls for.

Wear Indicators and Service Planning

Three machine readings tell the planner when a 1616718687 exchange is approaching. The element discharge temperature climbs as internal clearances open, because the same compression work is done with more leakage back across the rotor clearances. Free air delivery drifts down at a fixed working pressure, at first by a few percent that the controller absorbs, later by an amount the process air demand can no longer tolerate. Power draw per unit of delivered air rises, and the trend shows up in the energy bill of the plant before it shows up in an alarm.

Logged together, those three trends turn the exchange from a breakdown response into a planned stop. The comparison that matters is against the readings taken when the machine was new or after the previous element change, recorded in the machine file with the element serial number and the hour count. A planned stop also lets the surrounding items join the same window: the gasket set around the casing connections, the seals the parts list calls for, and the cooler service that shares the same access route.

Waiting past the point where the trends confirm wear carries its own cost. A worn element loses efficiency faster as the clearances grow, and a bearing or seal failure inside a 1616718687 stage can spread debris into the oil-free air path, turning a planned exchange into a full system cleaning.

Serialization and the Element Nameplate

The ERP marks the 1616718687 element as serialized. Every unit carries a nameplate with its own serial number, and that number follows the 1616718687 unit through production, warehousing, and service. When the new 1616718687 element arrives, read and record the nameplate before installation: the part number, the serial number, and the origin marking together form the identity of the compression stage going into the machine.

The same record belongs in the machine file next to the running hours at the time of the exchange. Over the life of the compressor, that chain of element serial numbers and hour counts becomes the wear history of the machine, and it is the reference the next planner will look for.

On receipt, the inspection is short but worth the minutes: the casing and interfaces carry no transit damage, the protective covers are still seated, and the delivery papers show the element serial number that matches the nameplate. A unit that passes those checks goes into the machine file as the incoming 1616718687 for the planned stop.

Serialization also protects the order path. Because each element is an individually tracked unit, the order enquiry carries the part number and the machine serial number together, and the delivery documents repeat the element serial number so the receiving workshop can match the unit to the work order before the stop begins.

Ordering the 1616718687 Element

The 1616718687 OFS K-27 element is ordered as one complete exchange unit from Belgium, declared under customs tariff code 8414900090. An order enquiry should carry three references: the compressor model and serial number, the part number 1616718687, and where applicable the ERP reference ECB AIF 1539. With those three lines, the element, its gasket set, and the seals the planned stop calls for can be confirmed together before anything ships.

Planning notes for the exchange stop: the 154 kg element needs a clear lift path and standard rigging, the gaskets around the casing connections are renewed at every exchange, and the machine file should receive the new element serial number and the hour count. Send us the compressor model and serial number with the part number 1616718687, and Seadweer confirms the match and the surrounding parts for the stop before the order is processed.

FAQ

Q: Which machines use the 1616718687 element?

The element fits the ZR 90, the ZT 132-10-50E and ZT 132-10-50D packages, and the PTS 800 and PTE 900 VSD+ portable oil-free series. The machine serial number confirms the exact build variant for an individual package.

Q: What is the ECB AIF 1539 reference on this element?

It is the internal reference recorded in the ERP text and short description for the 1616718687 item. It identifies the element inside the Atlas Copco product company structure and can be quoted on the order enquiry next to the part number.

Q: Does the element come as parts or as a complete unit?

The 1616718687 is supplied as one complete, factory-sealed exchange element. The rotors, casing, timing gear end, and bearing set arrive assembled, so the exchange is a mechanical swap with renewed gaskets rather than a rebuild inside the old casing.

Q: What goes into the machine file when the new element is installed?

Record the element serial number from the nameplate and the machine running hours at the exchange. Together with the part number, those entries form the wear history of the machine for the next service planning cycle.

Q: How is the element shipped?

The unit is packed for industrial transport at 154 kg, with the customs tariff code 8414900090 declared on the export paperwork. The delivery documents repeat the serialized element number so the receiving workshop can match the unit to the work order.

Quick Reference

• Part number: 1616718687, description OFS K-27, pack brand CO
• ERP reference: ECB AIF 1539
• Fits the ZR 90, the ZT 132-10-50E and ZT 132-10-50D, and the PTS 800 / PTE 900 VSD+ portable oil-free series
• Weight: 154 kg; dimensions 60 × 42 × 45 cm
• Country of origin: BELGIUM; customs tariff code 8414900090
• Serialized element; record nameplate number and hour count at every 1616718687 exchange
• Complete sealed exchange unit; gaskets renewed at every stop

Other Atlas Copco Parts List

If you are looking for other Atlas Copco air compressor parts, further models are listed in the table below. Have a look, or get in touch with us for details.