Maintenance Has Changed
The world of equipment maintenance changed dramatically during the second half of the 20th century and it continues to do so today.
Several major influences have been responsible for driving these changes:
- An enormous increase in the number of physical assets (such as buildings, factories, public and personal transport) that require maintenance
- Equipment has become extremely complex - for example, it is now rare to find anything that does not contain a computer or some electronics
- Industries (such as manufacturing and mass transport) now put a much greater emphasis on safety and on operating without damaging the environment
- We now have a much better understanding of how equipment behaves, from installation to the point at which it fails.
Mass unbalance in a rotating system often produces excessive synchronous forces that reduce the life span of various mechanical elements. First of all we will define unbalance case. Unbalance is basically very simple case caused by 
Plant pros often talk about the importance of a maintenance, operations and engineering partnership. In my experience, the discussions commonly center on very general terms such as better communication and understanding. Those issues are important, but we need precise rules and actions to drive that partnership long term.
By incorporating special lubricant metering discs on its range of linear recirculating roller bearings and guideway assemblies, Schaeffler has reduced lubricant consumption by more than 25 per cent compared to conventional designs.
JBJ Techniques has spotted a gap in the market for an effective, simple to use, four-channel process monitor and alarm controller, combined with PC-based visualisation and data logging software. So the company has addressed this requirement by developing its own cost-effective package.
As someone involved in the maintenance of a company’s assets, which may include plant machinery, vehicles, long term hire equipment, stock and spares; you will be aware of the bewildering amount of guidance on the subject. You may well be new to the subject having just been delegated to look at your company’s asset portfolio, or given this task in addition to other operations work.
In about 50% of organizations spare parts and materials stores reports to the maintenance organization. In about 50 % of organizations spare parts and materials stores is part of the purchasing function.
By Paul Dean, CEng, Shire Systems Limited. What 
Recently I received an invitation from a well known exhibition organiser to participate in a maintenance feature and submit editorial with company overview- good opportunity. However, my enthusiasm changed to being perplexed when the invitation turned out to be for 
Heating rail maintenance sheds effectively and economically is a challenge many train companies are now facing with confidence. Nick Winton of AmbiRad Ltd explains.