Buyers Guide 2023

Focus on: Seals, Bearings & Lubrication Maintenance Matters Annual Buyers’ Guide 2023 www.pwemag.co.uk Plant & Works Engineering | 15 metalworking or other machines that produce swarf and dust. The bearings and all mating parts, including the lubricant, must be clean and free from damaging contaminants. Where a bearing has to be mounted in an unprotected area, steps must be taken to protect it and the mounting position from contaminants, such as dust, dirt and moisture, until installation work has been completed. This can be achieved by covering or wrapping the bearing and machine components with plastic or foil. The importance of accuracy A bearing will only perform satisfactorily if its associated components are geometrically accurate and if the prescribed tolerances are adhered to. When measuring these, it is important that the components and the measuring instruments are at approximately the same temperature. This is particularly important where large bearings, and their associated components, are concerned. The right tools for the job When performing installation work, gloves should be worn, and carrying and lifting tools specially designed for mounting bearings should be used. Further to keeping operatives safe, using the proper tools will save them time and effort. A good dismount Likewise, there is always the potential to damage an otherwise good bearing during dismounting. Therefore, whenever possible, such operations should be avoided. However, if a bearing must be dismounted and it is intended for re-use: No part of the bearing should be hit directly. The dismounting force must not be allowed to be transmitted through the rolling elements. The bearing must not be heated with an open flame. After the bearing has been dismounted, it must be cleaned with a suitable solvent and dried carefully. All parts of the bearing, and especially the raceways, rolling elements and cage, should be inspected for wear or damage. If the bearing can be reused, it can be protected against corrosion with a thorough coating of grease, oil or an anti-corrosive fluid, and repackaged. As the old saying goes, if you look after your tools, then they will look after you. In the case of bearings, this duty of care begins with their mounting. Mounted correctly, bearings will provide many years of reliable service. Name: Company Name: Address: Post Code: Tel: Total Number of Copies @ £ p+p Total £ Drives S & S Hyd H/B Pne H/B Ind Mot Comp H/B H/B Air QUANTITY QUANTITY Hydraulics & Pneumatics There are now 6 of these handy reference books from the publishers of the Drives & Controls and Hydraulics & Pneumatics magazines. Published in an easily readable style and designed to help answer basic questions and everyday problems without the need to refer to weighty textbooks. We believe you’ll find them invaluable items to have within arms reach. From the publishers of QUANTITY QUANTITY QUANTITY 2-5 copies £4.30, 6-20 copies £4.10, 20+ copies £3.75. QUANTITY PRACTICAL ENGINEER’S HANDBOOKS HYDRAULICS INDUSTRIAL MOTORS SERVOS AND STEPPERS PNEUMATICS COMPRESSED AIR INDUSTRIAL ELECTRIC DRIVES PLEASE ALLOW UPTO 28 DAYS FOR DELIVERY $&! -!.5&!#452).' -%$)! ,4$ 4HE (IGH 3TREET 4ONBRIDGE +ENT 4. "% Postage and Packaging: 1-3 copies: £2.99 4-6 copies: £4.99 7 or more copies: £6.99 If you would like to obtain additional copies of the handbooks, please email info@dfamedia.co.uk or call us on 01732 370340.Alternatively you can return the completed form below to: Engineers Handbook, DFA MANUFACTURING MEDIA LTD, 192 The High Street,Tonbridge, Kent TN9 1BE #HEQUES SHOULD BE MADE PAYABLE TO $&! -ANUFACTURING -EDIA ,TD AND CROSSED ! # 0AYEE #OPIES OF THE HANDBOOKS ARE AVAILABLE AT a PER COPY $ISCOUNTS ARE AVAILABLE FOR MULTIPLE COPIES The calculated life expectancy of any bearing is based on eight assumptions: 1. The bearing is of high quality and has no inherent defects. 2. The bearing is the right one for the job. 3. The dimensions of the parts working with the bearing, such as the shaft and housing seats, are appropriate. 4. The bearing is mounted correctly. 5. The correct lubricant, in the proper quantity, is always available to the bearing. 6. The bearing arrangement is properly protected (sealed). 7. The operating conditions are matched to the bearing arrangement.