- Email: [email protected]
Centralized lubrication for cigarette packing machines
Plastics in bearings A conference entitled 'Plastics in bearings' is being organized by the Plastics Institute, to be held at the Solihull Civic Hall on 21 February 1973. It is aimed at the materials engineer and the designer, with a programme including an up-to-date appraisal of bearing technology and design, and showing through case histories, the applications of such bearings'. A small exhibition will illustrate the papers to be presented, which are detailed below. 'The basic mechanisms of friction and wear', J. K. Lancaster (Royal Aircraft Establishment) 'Plain, filled and reinforced plastics materials', M. W. Pascoe (Brunel University) 'High temperature bearings', G. H. West and J. M. Senior (University of Manchester Institute of Science and Technology) 'Plastic fibre materials', M. Harrison (Ampep Industrial Products Ltd) 'Steel backed plastic lined bearings', G. C. Pratt (Glacier Metal Co Ltd) 'Thermoplastics bearings', I. M. Rankin (Polypenco Ltd) 'Reinforced thermoset bearings', J. C. Hodge (Railko Ltd) 'Design data for bearing surfaces', A. B. Crease (Michael Neale and Associates) The Plastics Institute, 11 Hobart Place, London SW1
Bearings by the million
Centralized lubrication for cigarette packing machines Centralized lubrication has been installed recently on a number of hinge lid cigarette packing machines operated by W. D. and H. O. Wills. Cigarette making and packing machinery operates under arduous conditions since tobacco dust is always present and any lubrication system must not contaminate the product. Maintenance periods are infrequent and short because the machinery must be run as intensively as possible to achieve profitability. Regular, efficient lubrication is thus vital to enable an adequate life to be achieved on a machine having some 240 lubrication points which cannot be serviced during the working period. The lubrication system installed on Wills' hinge lid cigarette packing machine is a total loss system fed by a ring-main circuit. The pump, of the hand-operated type, is operated twice per day when each of the 240 lubrication points receives an individually metered quantity of lubricant. This system of centralized, metered lubrication by oil replaces a grouped nipple scheme employing grease as the lubricant. Other machines in the production sequence also employ centralized lubrication systems to minimize the need for detailed human attention and each installation uses oil which is colour stained. This enables the source of any contamination to be positively and quickly identified thus enabling wastage of a valuable product - tobacco - to be kept to an absolute minimum. Fig 4 shows part of the packing machines with one of the two hand-operated pumps in the foreground which feed oil to the lubrication points. Enots Ltd, PO Box 22, Eastern Avenue, Lichfield, Staffs WS13 6SB, England
'Bearings by the million' is a film which looks at the variety of applications served by RHP bearings. Worldwide examples of the bearings' use include: snowmobiles in Canada; outboard motors in the world outboard championships on Lake Havasu, Arizona; and mining machinery in the Western Australian desert. One sequence concentrates on the part played by RHP bearings in the Rolls-Royce RB211 for TriStar, in the Olympus engines for the Concorde and in the Bristol Pegasus engines of the Harrier. Still in the field of transport, designing a special rear hub bearing for the Morris Marina is the subject of another sequence. Introduced by a sequence on the manufacture of cast iron housings for mounted unit bearings, the film ends with an account of rolling bearing manufacture. Ransome Hoffmann Pollard Ltd, 76 Jermyn Street, London SW1Y 6NU
Cutting oils and fluids BP has produced a film, 'Cutting oils and fluids', designed to inform managers, engineers and students of the important role played by cutting oils and fluids in the machine shop. The film, which runs for 17Y2 minutes, describes the various types of water-based fluids and neat cutting oils and explains how they perform their function. Interesting techniques used in the film include recording the heat distribution in the cutting zone by infra-red cameras, illustrating the rainbow effect produced by the stresses in the cutting tool by polarized light and filming grinding dust under the magnification of an electron microscope. scope. The British Petroleum Co Ltd, Britannic House, Moor Lane, London EC2Y 9BU
TRIBOLOGY December 1972
247
Bearings by the million
Centralized lubrication for cigarette packing machines Centralized lubrication has been installed recently on a number of hinge lid cigarette packing machines operated by W. D. and H. O. Wills. Cigarette making and packing machinery operates under arduous conditions since tobacco dust is always present and any lubrication system must not contaminate the product. Maintenance periods are infrequent and short because the machinery must be run as intensively as possible to achieve profitability. Regular, efficient lubrication is thus vital to enable an adequate life to be achieved on a machine having some 240 lubrication points which cannot be serviced during the working period. The lubrication system installed on Wills' hinge lid cigarette packing machine is a total loss system fed by a ring-main circuit. The pump, of the hand-operated type, is operated twice per day when each of the 240 lubrication points receives an individually metered quantity of lubricant. This system of centralized, metered lubrication by oil replaces a grouped nipple scheme employing grease as the lubricant. Other machines in the production sequence also employ centralized lubrication systems to minimize the need for detailed human attention and each installation uses oil which is colour stained. This enables the source of any contamination to be positively and quickly identified thus enabling wastage of a valuable product - tobacco - to be kept to an absolute minimum. Fig 4 shows part of the packing machines with one of the two hand-operated pumps in the foreground which feed oil to the lubrication points. Enots Ltd, PO Box 22, Eastern Avenue, Lichfield, Staffs WS13 6SB, England
'Bearings by the million' is a film which looks at the variety of applications served by RHP bearings. Worldwide examples of the bearings' use include: snowmobiles in Canada; outboard motors in the world outboard championships on Lake Havasu, Arizona; and mining machinery in the Western Australian desert. One sequence concentrates on the part played by RHP bearings in the Rolls-Royce RB211 for TriStar, in the Olympus engines for the Concorde and in the Bristol Pegasus engines of the Harrier. Still in the field of transport, designing a special rear hub bearing for the Morris Marina is the subject of another sequence. Introduced by a sequence on the manufacture of cast iron housings for mounted unit bearings, the film ends with an account of rolling bearing manufacture. Ransome Hoffmann Pollard Ltd, 76 Jermyn Street, London SW1Y 6NU
Cutting oils and fluids BP has produced a film, 'Cutting oils and fluids', designed to inform managers, engineers and students of the important role played by cutting oils and fluids in the machine shop. The film, which runs for 17Y2 minutes, describes the various types of water-based fluids and neat cutting oils and explains how they perform their function. Interesting techniques used in the film include recording the heat distribution in the cutting zone by infra-red cameras, illustrating the rainbow effect produced by the stresses in the cutting tool by polarized light and filming grinding dust under the magnification of an electron microscope. scope. The British Petroleum Co Ltd, Britannic House, Moor Lane, London EC2Y 9BU
TRIBOLOGY December 1972
247