perma LUBE BOOK

| 40 Challenges Lubrication points perma Lubrication systems for Blowers / Fans Blowers and fans are used in almost all industries. They provide adequate amounts of primary and secondary air. Flue gas fans remove air containing dust, gases and harmful substances. In primary air zones, induced draft fans are used in scrubbers, dust collectors, heat exchangers and desulfurisation plants. The lubrication points (roller bearings) are located at the drive shaft between drive motor and fan impeller. Bearing and sealing of fan drive shaft is normally done by means of a pillow block housing or a bearing unit. These must be permanently supplied with the specified amount of the right lubricant. Information about drive motor lubrication can be found on pages 36 / 37: “Electric motors”. Drive motor Bearing and seal on the fan drive shaft Æ Æ Chemical & pharmaceutical industry Æ Æ Glass industry Æ Æ Wood-working Æ Æ Power plants (power generation) Æ Æ Food industry Æ Æ Refineries Æ Æ Mining & heavy industry Æ Æ Pulp & paper industry Blowers / fans are normally operated under extreme conditions . Contaminants such as dust or pumped media are raised and may infiltrate the bearing system. This causes increased wear in individual components and reduces service life. Æ Æ Contaminants (e.g. dust ) raised in the air must not enter the lubrication points Regular lubrication of bearings and seals is imperative. Lubrication points are often extremely dirty and hard to reach, which makes maintenance even more difficult. Specified lubrication intervals are neglected or not observed for this reason. The resulting lubrication starvation leads to increased wear and in extreme cases to failure of the blowers and fans. Æ Æ Excessive overheating of bearing points due to lubrication starvation Æ Æ Lubricants must be able to withstand demands , such as vibrations and high speeds Æ Æ Compliance with relubrication intervals , depending on bearing type, bearing size and ambient conditions