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In his introduction to this paper the author likened the function of the tribology centres to that of a two‐way bridge—for the drawing in of information about industry's tribological problems and for the outflow of remedial advice and help.

SKF Group is one of the largest bearing manufacturers in the world, well known for its innovations and high quality bearings. One of its innovations is the CARB bearing, which functions particularly well under severe working conditions where traditional bearings break down easily. Compared to traditional bearings, CARB saves costs and creates value because it requires less maintenance, has a longer life, and simplifies machine structure. SKF launched CARB in 1995 and acquired a patent for a period of ten years. CARB bearings, which are manufactured in Sweden, have been widely used in Western markets and become almost standard parts. SKF started to export the new bearings to China in 1997. CARB bearing markets, in China, could be classified into two parts, the new installation (OEM) market and maintenance market, which mainly consisted of the replacement of the CARB bearing for the Chinese‐made conventional bearings on numerous machines. The SKF Shanghai Office was in charge of devising a marketing strategy to sell the CARB bearings to the maintenance markets, the majority of which were large‐scale state‐run companies. But the China market is huge, culture and influences from the West vary across regions, styles of doing business are also different. The first task of the SKF Shanghai Office was to segment the maintenance market and select the segment which was least difficult to enter.

THE above question was included in the speech by Mr. Folke Lindskog, SKF Group President and Chairman of the Board, when welcoming the press to their new European Research Centre at Jutphaas, near Utrecht, Holland, prior to the official opening on Wednesday, 19th April, by HRH Prince Bernhard of the Netherlands, in the presence of HRH Prince Bertil of Sweden.

A series of articles dealing, in as simple a way as possible, with the basic facts of lubrication, lubricants, their selection and prescription, specification, application, and testing. This series is primarily intended for students, engineering personnel who may be unfamiliar with certain aspects and others who, one way or another, are interested in this important subject. Part One in our March 1965 Issue dealt with Friction, Lubrication and Wear. Part Two in July dealt with Mineral Oils and their Additives. Part Three, in September and October dealt with Lubricating Greases. Part Four in December and January covered the Purpose and Significance of Lubricant Tests. Part Five in May 1966 dealt with Grease Viscosity and Shear Stability.

The main objective of the paper is to explore the theoretical correlation of base oil viscosity in grease and to study the effect of grease grade on mechanical vibrations associated with the damaged rolling bearings.

For theoretical purposes, formulation theory of dimensional analysis was implemented. Experiments were then performed on the test bearings lubricated with three different types of greases, namely, SKF LGHP2, SKF LGMT3 and SKF LGWA2.

The numerical results obtained from the theoretical model along with the results of experiments show that the vibration amplitudes of the defective bearings come down to a lower level when it is lubricated with the grease of a higher base oil viscosity.

The promising results from the theoretical model make it usable for the practical rotating machineries applying a variety of the rolling bearings. Consequently, if the bearing is not severely damaged, its performance can be increased by lubricating it with thicker grease.

Despite many significant contributions in the field to detect the presence of defects, not many studies have been performed that relate the lubrication condition of the rolling bearings with the vibration response, because around 50-75% of the bearing failures are attributed to be lubrication related. Hence, there is need to develop a mathematical model that can correlate the vibration severity of the bearings with viscosity of the lubricant oil in the greases along with other design and operating parameters.

Bearing and lubrication arrangements which prolong the life of one of the toughest types of machine used in the construction industry

A NEWLY patented measuring method for detecting damage in ball and roller bearings used in machinery and transport equipment at an early stage was announced and demonstrated at a press conference in Stockholm recently by the SKF Group. The bearings are inspected in operation using the SKF shock pulse meter MEPA 10A which is to be sold by SKF.

The world's first double universal rolling mill with integral edging mills rolls two rails or girders simultaneously. Compared with a conventional installation, very much less space is required and all the problems of synchronizing the operation are eliminated. Total investment is also greatly reduced. SKF supplied four‐row cylindrical roller bearings for the horizontal rolls. Accurate axial location is provided by a double direction spherical roller thrust bearing. The vertical and edging rolls are fitted with SKF bearings as well.