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Seals & Bearings

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).

Read more: EXTENDING BEARING LIFE

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.

Read more: Eliminate 52% of bearing failures with LabTecta®66

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.

Read more: Schaeffler launches online guide to the mounting of rolling bearings

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

New bottom bracket bearings for cycles provide more energy efficient, smoother ride

A new, compact bottom bracket for city and touring bicycles has been developed, which provides smoother running and ensures that the rider uses significantly less energy to reach their destination.

The bottom bracket is the main bearing position on a bicycle. Schaeffler’s new BB29 FAG bottom bracket unit is unique in that it provides perfectly smooth operation due to its optimised bearing design. Unlike conventional bottom brackets, the bearings do not need to be braced in the frame.

The shaft of the BB29 unit is coated with a special corrosion protection agent, which provides corrosion resistance in salt-spray tests of more than 200 hours. Conventional bottom brackets are normally zinc-plated, offering only limited corrosion protection.

Read more: New bottom bracket bearings for cycles provide more energy efficient, smoother ride

Low friction rolling bearings enable greater drive train efficiency in tractors and graders

The Schaeffler Group has developed new rolling bearings for tractors and graders, which enable greater drive train efficiency, reducing fuel consumption and vehicle emissions.

Tractors and graders require high drive power and operate at high speeds. As well as providing operational reliability under every conceivable load or speed condition, design engineers are now looking to develop more environmentally friendly machines with reduced fuel consumption and more energy efficient drive trains.

Many of the latest tractors offer more than 100kW drive power, with some achieving road speeds of up to 80km/h. Most graders operate under full load at speeds of up to 40km/h. The high drive power required for these types of applications is transmitted via the gearbox and differential. Therefore, significant fuel savings can be achieved by focusing on improving the efficiency of these two key drive train systems.    
 

Read more: Low friction rolling bearings enable greater drive train efficiency in tractors and graders

Tube roller bearing prevents slippage in wind turbine gearboxes

A novel design of rolling bearing for wind turbine gearboxes has been developed, which is not only resistant to the effects of slippage, but actually prevents slippage from occurring in the first place.

Rather than utilising conventional rolling elements, Schaeffler’s FAG tube roller bearing incorporates three tube rollers. These tube rollers enable the bearing to rotate without slippage under all load conditions. At the same time, the load rating and rating life are unaffected.

Slippage is the natural enemy of all rolling bearings. The life and performance of a rolling bearing will suffer if it is overloaded or under-loaded. This is because rolling bearings are designed with a minimum load requirement in order to function optimally. If this minimum load is not met, slippage will occur. This means that the rolling elements not only rotate, but also slide on the bearing raceways. Eventually, this can lead to surface damage such as increased wear or smearing, particularly in critical lubrication conditions.

Read more: Tube roller bearing prevents slippage in wind turbine gearboxes