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Seals & Bearings

On-demand production of high-performance seals

ems sept 19 36On-demand production of high-performance seals
 
SKF has unveiled a trio of new seal profiles for its SNL plummer block housings. For distributors and end-users an efficient and cost-effective means for their production has also been introduced.
 
The latest SKF seals have been developed for applications where better sealing performance is required than that provided by a labyrinth seal, but where space does not allow for a taconite seal. The new seal profiles are: TX, a single acting design with a lip seal facing outwards that prevents the ingress of contaminants while enabling grease flushing; TY, a double acting design with a lip facing outwards and a lip facing inwards; TZ, a double acting solution that features two single-lip seals in a back-to-back configuration.

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Rollers with end profiling set new standard

ems july 19 22 5Spherical roller bearings from Schaeffler now even more durable

•    Rollers with end profiling will be successively introduced in all 241-series spherical roller bearings with bore diameters of 500 mm and above.
•    Edge pressure caused by abrasive material wear is at least 20 per cent lower.
•    Their use in roller presses – which are primarily used as grinding mills for cement and raw materials but also find use in the mining industry – offers lots of potential.

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The rise of recycled bearings

ems april 1 19 1Bearings are circular, much like the economy they are used in. As more customers avoid disposing of bearings needlessly, Chris Johnson, managing director of bearing re-lubricator SMB Bearings, explains the sudden surge in popularity of reusing and recycling ball bearings through relubrication.

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EXTENDING BEARING LIFE

bearing10 6 july 15The reliability of most rotating equipment is almost inevitably linked directly to bearing life, and it is estimated bearing failure is responsible for almost 21% of these equipment failures (Bloch, 2011).  

Research into bearing failures  shows that just over half of these are a result of contamination of the bearing oil (Fig 1). Clearly it is therefore essential to ensure that contamination of the bearing lubricant is minimised and if possible eliminated if optimum bearing life is to be achieved thereby improving the equipment reliability (MTBF).

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Eliminate 52% of bearing failures with LabTecta®66

pump 6 july 15Save your bearings with LabTecta®66, which can reduce bearing oil contamination from 83% to 0.0003%.

LabTecta®66

Research shows that 52% of bearing failures are due to contamination of the bearing oil, which represent 20.8% of all rotating equipment failures.

LabTecta®66 is a labyrinth design bearing protection seal, which is proven to increase equipment reliability in pumps, electric motors, fans, pillow blocks, steam turbines and gearboxes.

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A guide to material selection for rolling bearings

scheaffler-203By offering a wide choice of materials and heat treatments for rolling bearings, performance and operating life can be optimised, even for the most demanding industrial applications, says Dr Steve Lacey, Engineering Manager at Schaeffler UK.

In recent years, there has been a significant increase in the demand for rolling bearings that, even under extreme operating conditions – including lubricant starvation, highly corrosive or high temperature environments – still provide a long operating life and optimum performance.

But selecting a suitable material or heat treatment process for rolling bearings often requires expert advice and guidance, normally from the manufacturer of the bearings. Selection depends on the application itself and the specific environment in which the bearings will operate. This means a number of factors require careful consideration, such as the mechanical, chemical and thermal requirements placed on the bearings, as well as lubrication conditions, particularly if the application requires dry running bearings.

Read more: A guide to material selection for rolling bearings

Schaeffler launches online guide to the mounting of rolling bearings

mountingPrecision bearing supplier Schaeffler has launched an online, interactive information guide on how to correctly install rolling bearings and the tools required to do this.

The correct mounting and dismounting of rolling element bearings can save time and dramatically increase the life of bearings, as well as maximising the availability of critical plant and machinery by avoiding costly breakdowns. The key is to ensure that the appropriate tools and equipment for the mounting and dismounting of rolling bearings are on hand for the engineer at the installation or assembly stage. Appropriate tools may include thermal mounting and dismounting tools (i.e. heating plates), induction-heating devices, mounting paste and heating rings, as well as feeler gauges, hydraulic extractors, hydraulic nuts and hand pump sets. Using the correct tools ensures that bearings are mounted and removed easily and quickly without causing damage to the bearings or surrounding equipment and in a safe and reliable way.

The new Schaeffler Mounting Toolbox is a web-based information guide on how to professionally install rolling bearings. As well as learning about which tools and fitting aids are required to install rolling bearings, users can also view short educational videos that demonstrate how these tools should be used in practise.

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New induction heaters offer unique technical benefits and safety features

Schaeffler has improved its HEATER range of FAG induction heaters to include several unique technical innovations, which not only improve the safety and reliability of the devices, but also maximise plant and machine availability for end users.

 

Schaeffler’s HEATER range includes seven induction heater models, which are suitable for the mounting of bearings – or other circular steel components such as gears, couplings, pulleys and bushings – with a minimum bore diameter of 10mm, up to bearings with outside diameters of 1,500mm, with a maximum weight of 1,200kg.

SOLVING SEALING PROBLEMS FOR FLOW CONTROL PRODUCTS

Ball valves, utilising a drilled-through ball rotating in a retaining socket, are widely used for process line control operations within industry. Typical areas of application for these valves include oil and gas, chemical processing, power generation together with pulp and paper industries among many others.

Ball valves offer both flow throttling and full shut-off conditions, while applications can involve an extensive range of pressures, temperatures and even the use of chemically aggressive fluids. The importance of specifying the right sealing products for use within these valves becomes paramount, particularly where breakdowns or plant shutdowns caused through valve failure can be catastrophic.

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EAP Seals - Whatever the Industry we have a part in it

E-A-P International Limited, is a Stockist and Specialist Worldwide Distributor of Eriks Seals, Gaskets and associated technical products, with almost 40 years of ‘Professional’ service to industry, and now have one of the most varied stockholdings in Europe, and continues to offer a unique and very personal service to all its customers.

We have recently updated our website www.eapseals.com where you can find our full range of our products and services plus our latest catalogues.

Read more: EAP Seals - Whatever the Industry we have a part in it

NEW SEALS WITH RGD & BROAD CHEMICAL RESISTANCE FOR OIL AND GAS INDUSTRIES

Kalrez 0090 perfluoroelastomer O-ring seal products from DuPont Performance Polymers are now available from the UK sealing specialists Dichtomatik Ltd. These products have been developed by DuPont to provide outstanding resistance to rapid gas decompression (RGD) combined with broad chemical resistance, as experienced in the harsh environments of the oil and gas industries. As an official authorised distributor of DuPont Kalrez products, Dichtomatik provide a first class service and can also offer full technical support for customers experiencing sealing problems involving extreme temperature or pressure conditions combined with aggressive fluids.
 
DuPont products have an established reputation for delivering durable and reliable sealing solutions for both downhole and surface-level equipment such as packers, pumps and valves as well as many general chemical handling and processing applications. Kalrez 0090 has achieved the highest ‘0000’ rating in the NORSOK M-710 Rev 2 tests recently conducted in the UK by the independent Materials Engineering Research Laboratory (MERL). It was established that Kalrez 0090 has outstanding resistance to RGD, with no cracks or blisters having developed on the O-ring sections throughout the test cycling.
 
In addition to finished O-rings,  Kalrez 0090 can be supplied in the form of flat washers, discs, cords or special mouldings for all applications that require the highest  ‘0000’ rating for RGD resistance. Additional  properties that ensure superior performance include high resistance to chemical attack from more than 1,800 chemicals and solvents, especially sour multi-phase fluids containing H2S (as shown by the external NORSOK M-710 Rev 2 Sour Fluid ageing resistance certification provided by MERL-UK). High-temperature resistance up to 250°C (482°F) is maintained with high levels of elasticity and recovery even after long-term exposure. High modulus at low elongation properties also ensure excellent extrusion resistance.
 

Read more: NEW SEALS WITH RGD & BROAD CHEMICAL RESISTANCE FOR OIL AND GAS INDUSTRIES