Although synthetic process lubricants are more expensive than mineral oils when purchased for the first time, strict and comprehensive cost justifications often show a relatively short payback period. Combines increased bearing life with increased drainage intervals.

This can be achieved by keeping contaminants away from the lubricant. Therefore, adding to bearing protector seals and plant-wide oil mist process lubrication are the two main strategies adopted by plants worldwide.

Protects process lubricants to increase bearing life

Air and process lubricants can take up housing space that is not actually used by the bearing. To keep the bearings alive, avoid ingress of solid particles and water. Therefore, the correct housing seal protects the oil.

Users who pay attention to reliability, that is, the unoptimized design of the bearing block protector will peel off the sealing strip, thereby impairing the cleanliness of the oil. The API-610 standard applies to process pumps. This standard does not allow a lip shape to be thrown outward at a sufficient shaft speed, away from a larger o-ring. Seal, and requires the use of labyrinth rotary or contact surface bearing housing protection seal. The larger cross-section O-ring can then move freely axially and open a micro gap.

Small steam turbines typically suffer from steam leaks at the drive and governor end seal glands. Each bearing housing is adjacent to one of these two glands containing a carbon ring.