You can only be sure of it when installing an original spare part. Because despite of standardization of parts there are differences in design that are specific to manufacturer and user. When you order the a.m. bearing from a well-known producer it is of course possible that you receive the correct one. But it is also possible that maybe a filling notch has been effected differently or that the “pressure angle” varies slightly. This, however, may lead to lowering the lifetime by 70 % or even worse.

This is the reason why the chemical and petrochemical industry always contact the “OEM”
Who is it?
The “OEM” is the Original Equipment Manufacturer.

Which advantages can be offered by the “OEM”?

Generally, he has the best product knowledge. When time is short and demands on production are high he is able to carry out repairs correctly, routinely and quickly.
Even trained foreign staff cannot always stay at the highest level of technical knowledge. And in emergency cases there is no time to try various methods of installation.

• He makes a quick and exact diagnose of malfunction.
• He is informed about changes and improvements on products.
• He does not only exchange components but he also examines why they are now worn or defective.
• He uses original parts and accessories which have gone through a rigid quality check.
• In cases of “long-lasting” problems he disposes of the entire back up, i.e. development, design, manufacture and test stand of the main company.
• He accepts the responsibility for his work. The responsibility is backed by warranties and performance standards.