Becker WN124-249 Vanes 90132400004, 90132400007

IDENTIFYING BECKER VANE WN 124-249

BECKER PUMPS USING WN 124-249 VANES

WN 124-249 vanes are fitted to the Becker DVX3.140, KDX3.140 and KVX3.140. Although the physical vane is the same, the quantity required differs according to the pump model.

REPLACING BECKER WN 124-249 CARBON VANES

VacAir Superstore stocks and supplies Becker WN 124-249 replacement carbon vanes for the Becker DVX3.140, KDX3.140 and KVX3.140 dry-running rotary vane pumps. Identified by VacAir reference VA901324, these carbon vanes measure 240 × 47 × 4.3 mm and are supplied in the correct quantity for the individual pump model.

An important consideration with WN 124-249 is that the same vane is used in pumps requiring different quantities. The DVX3.140 requires seven vanes, identified by Becker OEM reference 90132400007. The KDX3.140 and KVX3.140 each require four vanes, identified by 90132400004. These are not two different vane sizes: the OEM references distinguish the quantity required for the respective pumps.

For maintenance engineers and purchasing departments, this distinction is particularly important when ordering from an older parts list or identifying vanes from their WN marking alone. A WN 124-249 identification confirms the vane type, but the pump model must also be checked to establish whether a four-vane or seven-vane set is needed. VacAir can help confirm the correct quantity before supply.

The height of a new Becker WN 124-249 vane is 47 mm, and the specified minimum wear height is 31 mm. As a dry-running rotary vane pump operates, the carbon vanes progressively wear against the internal cylinder surface. Regular measurement provides a practical way of monitoring their condition and planning replacement before the vanes become excessively worn.

Vanes should be inspected as a complete set. Differences in height between individual vanes, chipped edges, cracks or unusual wear marks may indicate a developing problem within the pump. Once the 31 mm minimum wear height is reached, replace the complete set appropriate to the pump rather than fitting individual new vanes alongside partially worn components.

The WN 124-249 vane is a relatively long carbon component at 240 mm, making careful handling, inspection of the rotor slots and checking for consistent movement particularly important. Before reassembly, examine the cylinder and end plates for scoring, assess the bearings and shaft, and investigate excessive carbon dust, restricted filtration or signs of overheating. These checks can help identify conditions that might otherwise shorten the service life of the replacement vanes.

WN 124-249 inspection and replacement checklist:

FITTING AND VANE ORIENTATION Before fitting new WN 124-249 carbon vanes, isolate the pump in accordance with the manufacturer’s servicing procedure. Remove the existing vanes carefully and inspect the rotor slots for carbon deposits, wear or damage that could restrict movement. Clean the slots thoroughly and confirm that each replacement vane can slide smoothly without binding. The higher edge of the vane is the leading edge, with the chamfer following behind. The accompanying illustration explains the general orientation principle. Always confirm the correct direction of rotation and fitting arrangement against the applicable Becker service instructions before installation. For a DVX3.140, fit a complete set of seven WN 124-249 vanes. For a KDX3.140 or KVX3.140, fit a complete set of four. Do not assume the quantity from the vane dimensions alone, as all three models use the same 240 × 47 × 4.3 mm carbon vane. If the removed vanes show substantial uneven wear, broken edges or evidence of internal contact, the underlying cause should be investigated before the pump is restarted. VacAir’s experienced vacuum pump engineers can provide fitting advice and workshop support where a routine vane change is not sufficient.

UK, EUROPEAN & WORLDWIDE VANE SUPPLY

WHY BUY REPLACEMENT BECKER VANES FROM VACAIR?

Specialists in replacement carbon vanes since 1996. VacAir has supplied vacuum pump vanes, spares and engineering support for decades. We understand that a maintenance department needs more than a part number: it needs confidence that the replacement will suit the pump, arrive in the correct quantity and be backed by people who understand the equipment. That is the service we have built our business around.

Correct vane quantities for different Becker pump designs. The WN 124-249 range illustrates why specialist product knowledge matters. Although the DVX3.140, KDX3.140 and KVX3.140 all use the same carbon vane, the DVX requires seven and the KDX/KVX models require four. We recognise both 90132400007 and 90132400004 and can supply the appropriate complete set from UK stock, avoiding unnecessary purchasing errors and delays.

40+ years of combined former Becker UK agent experience. Our senior team brings substantial knowledge of Becker vacuum pumps and their service requirements. That practical background helps when customers need to identify a vane, interpret a parts reference or discuss abnormal wear. VacAir is a dedicated vacuum pump specialist, not a generic industrial catalogue seller.

Competitive pricing and a clearly defined Price Promise. We aim to provide dependable replacement carbon vanes at competitive prices, supported by our experience and established supply arrangements. Our Customer Promises & Terms explain our Price Promise for qualifying comparable replacement carbon vanes available from UK suppliers. We encourage customers to raise any qualifying comparison at the quotation stage.

Externally audited ISO 9001:2015 quality management. VacAir operates an ISO 9001:2015 certified quality management system, supporting consistent processes, customer satisfaction and dependable service. We believe technical accuracy and straightforward communication matter, particularly when the wrong component or quantity could delay a machine repair.

Experienced, OEM-trained engineers and in-house repair support. When a pump needs more than replacement vanes, our workshop can provide professional fitting, servicing, fault diagnosis and refurbishment. Our Becker vacuum pump repair service can investigate problems such as excessive carbon wear, damaged internal surfaces, bearing faults or mechanical deterioration before the equipment is returned to service.

A comprehensive source of Becker spare parts. VacAir supplies much more than carbon vanes. We stock and source Becker spare parts, filters, OEM service components and associated vacuum pump products. Customers can obtain technical guidance and replacement parts from a supplier with a genuine understanding of the equipment.

UK stock and delivery worldwide. Whether you are replacing four vanes in a KDX3.140, servicing a KVX3.140 or fitting seven vanes to a DVX3.140, VacAir can help you source the correct WN 124-249 set and arrange delivery. From scheduled servicing to urgent production breakdowns, our focus remains on supplying the right products, offering competitive prices and helping customers keep their machinery working.

FREQUENTLY ASKED QUESTIONS