Atlas Copco 2906018601 GA 90-315 Element Overhaul Kit

Description

The 2906018601 is the Atlas Copco Element Overhaul Kit for the GA 90 to GA 315 class of oil-injected screw compressors. It gathers the parts of a full element overhaul in one set, so the compression stage is returned to service in a single planned stop rather than in several visits to the parts desk.

An overhaul is a different piece of work from a service. A service renews the parts a running element wears and leaves the housing closed, while an overhaul opens the element fully and returns the bearing positions and the housing joints to the state the machine was built with. The 2906018601 is built for the second kind of work.

This article sets out what the 2906018601 carries, why a large element is overhauled rather than replaced, how the machine is read before the work is planned and how the order is confirmed.

What the 2906018601 Element Overhaul Kit Is

The 2906018601 is an element overhaul kit of the Atlas Copco parts programme, listed for the GA 90-315 machines. It arrives as one set covering the compression element, and item data puts that set at 460 × 310 × 270 mm and 26.28 kg, with Belgium recorded as the country of origin.

An Element Kit, Not a Motor Kit

The kit works on the compression element, the stage that carries the rotor pair and produces the air. That is a different assembly from the drive motor and a different piece of work: the element is opened for its bearings and its housing joints, while the motor is untouched by the 2906018601. Plants that overhaul both plan the two jobs against the same stop.

The GA 90-315 Designation

The designation names the machine class the kit is recorded against: the GA 90 to GA 315 oil-injected screw compressors. Those machines run a large element frame, and the bearing set inside the 2906018601 is sized for that frame rather than for a smaller one.

The designation on the kit is the first reference to check, and the machine record is what confirms it. Send Seadweer the compressor model and serial number, and the parts list for that build states the element and the overhaul set that belong to it.

What the 2906018601 Kit Carries

The kit gathers the positions an element overhaul renews. Rather than a single part, it brings the bearing set, the gaskets and sealing rings of the housing joints and the fastening bolts of the assembly together in one set, so the job does not stop in the middle for a missing line.

The Bearing Set

The bearings are the heart of the set. They carry the rotor shafts through the frame, taking the radial load of the rotors and locating the shafts along their axes, and they are the parts that decide how the element runs once it is back together. Renewing them is the reason the element is opened at all.

Bearings of this size are supplied protected and are handled by their outer ring, never dropped and never rested on a workbench edge. The 2906018601 keeps the whole bearing set in one package for that reason.

Gaskets, Sealing Rings and Fasteners

The joints the element is closed with travel with the rest of the set. Housing gaskets and sealing rings are renewed rather than reused, because a joint that has already been compressed once does not seal the same way a second time. The fastening bolts of the assembly are part of the 2906018601 for the same reason.

Small parts decide whether a planned stop stays planned. While the bearings are being pressed into the element, the gaskets, the rings and the bolts are already at the bench, and the housing closes up in the same session.

Why the Element Is Overhauled Rather Than Replaced

A large oil-injected element is a long-life assembly, and a complete replacement is a far heavier piece of work than an overhaul. Where the housing, the rotors and the drive interface are still in good order, renewing the bearing positions and the joints with the 2906018601 returns the stage to service at a fraction of the scope.

Reading the Machine Before the Stop

The decision is taken on condition rather than on a fixed hour count. Vibration at the element housing and the drive end, discharge temperature at a steady load, free air delivery at the rated pressure and the power drawn for each unit of air are the readings that carry it.

A single measurement says little. Taken at a fixed interval, the same readings become a trend, and the trend is what turns an unplanned stop into a planned one. Logging the numbers beside the compressor serial number keeps the history of the 2906018601 job readable across years of operation.

What the Overhaul Renews Inside the Element

Inside the element, the bearing positions take the running loads of the rotor shafts, and the housing joints contain the oil that floods the compression chamber. Both change with the overhaul, and both are reached only with the element open.

Once the bearings are renewed, the element runs to the clearances of its factory build, and the readings taken at the machine return to their earlier level. Renewing the joints in the same visit keeps the oil where it belongs and out of the air path downstream of the 2906018601.

The Overhaul in the Workshop

The work divides into three stages, and the 2906018601 covers the parts of all three. Each stage is planned into the same stop, so the machine is out of service once rather than twice.

Stripping the Element

The element comes off the machine first and is carried on its mounting faces from there to the bench. The pipework and the drive are disconnected and the unit is stripped down, with the bearing positions and the housing joints exposed as the element opens. The old parts are kept until the new set is confirmed against them.

Renewing the Bearings and Seals

The bearing positions are renewed from the set inside the 2906018601, and the gaskets and sealing rings are fitted as the housing closes. Bearing fits are a controlled operation: the seat is measured before the new bearing goes in, and the seating is confirmed before the assembly is closed around it.

Cleanliness matters more here than at any other point in the job. The bores and the seats are kept clear through the strip and the rebuild, because the clearances the element runs to are small and grit left in a bearing position stays there. The parts of the 2906018601 stay in their packaging until each one is fitted.

Closing Up, Aligning and the First Run

With the element closed, the mounting faces are cleaned and checked, the coupling or the drive is inspected, and alignment and direction of rotation are confirmed before the machine is turned. Seals and gaskets at the machine side are renewed with the overhaul.

The machine is then run unloaded under observation. Discharge temperature, pressure and vibration at the element and the drive end are watched through the first running period, and the fasteners are re-torqued after the first hours. That log becomes the baseline for every later check on the 2906018601 job.

Handling the Kit and Planning the Stop

At 26.28 kg in a 460 × 310 × 270 mm package, the 2906018601 moves with ordinary workshop equipment. It is a set that is planned into a stop the plant already has, so the work is scheduled rather than discovered.

At the Bench

The kit stays closed until the element is on the bench, and the parts are checked against the contents line before the strip begins. Components of this kind are kept on a clean surface and away from the grit that a workshop floor carries, and each part returns to its packaging until it is fitted.

Working the Overhaul Into the Maintenance Plan

An element overhaul sits beside other work on the same machine. Where a plant is already stopping a compressor for its oil circuit or its drive, the element can be added to the same window, and one set of parts covers the whole element side of the job.

That is the practical value of the 2906018601: one number to quote, one set to check in, and one pair of dates for the machine rather than several.

Ordering the 2906018601 Through Seadweer

Two pieces of information lock the order down: the part number you hold for the overhaul, which reads 2906018601, and the model and serial number from the compressor nameplate. The nameplate matters because the element a machine carries is fixed by its build.

What to Send with the Enquiry

Send both to Seadweer and the parts desk checks the number against the machine record and confirms the 2906018601 in one pass. Where the kit number is not at hand, the machine model and serial number are enough to start, because the parts list for that build names the element and its overhaul set.

What the Quotation Repeats

The quotation repeats the item data of the 2906018601: the contents line of the set, the package size, the weight, the country of origin and the tariff code. One confirmation covers the whole overhaul, so the workshop schedules the stop without a second enquiry for the parts inside the kit.

Technical Specifications

The tables below collect the identification and physical data of the 2906018601 in one place, as the item data and the official parts listing state them.

Part Identification

Dimensions and Weight

The figures above are the item data of the 2906018601 for handling and logistics reference. The two tables together are the data sheet of the kit, and Seadweer repeats them with the quotation so the workshop knows what arrives before it arrives.

FAQ

What does the 2906018601 element overhaul kit contain?

The set covers an element overhaul with the bearing set for the rotor shafts, the housing gaskets and sealing rings and the fastening bolts of the assembly. It is listed as the element overhaul kit for the GA 90-315 machines, so the whole job is covered by the 2906018601 in one order.

Which machines does the GA 90-315 designation cover?

It names the GA 90 to GA 315 oil-injected screw compressors, the large frame machines of the GA range. The machine record is what confirms the element and its overhaul set, so send Seadweer the model and serial number before the order.

How does an element overhaul differ from an element service?

A service renews the parts a running element wears and leaves the housing closed. The 2906018601 is built for the fuller job: the element is opened, the bearing positions and the housing joints are renewed together, and the unit returns to its build condition.

How is the kit handled at 26.28 kg?

The item data lists 26.28 kg in a 460 × 310 × 270 mm package, so the set is carried by hand or on a trolley and stays closed until the element is on the bench. The parts are checked against the contents line before the strip begins.

When should an element overhaul be planned?

Watch vibration at the element housing and the drive end, the discharge temperature at a steady load and the power drawn for each unit of air. A trend that rises across intervals is the signal to plan the overhaul with the 2906018601 inside a stop the plant already has.

How do I order the 2906018601?

Send Seadweer the compressor model and serial number together with the part number you hold for the overhaul. The team checks the record against the 2906018601 before the quotation is issued, and the element class is confirmed in the same pass.

Other Atlas Copco Maintenance Kits Available

Other Atlas Copco maintenance kits beyond those listed above can also be arranged on request. Check the table below, or reach out to us for the full picture.