In a comprehensive paper the manufacturer described remedial actions which included grade 46 oil viscosity and oil rings made of high performance polymers bradshaw 2000.
Oil slinger ring design.
A slinger flinger disc or oil rings can also be used to provide splash lubrication.
A disc is mounted inside the bearing housing and is driven by the pump shaft.
Less frictional heat results from lower oil levels figure 2 than from an oil level reaching the center of the bearing.
Ring oilers were used for medium speed applications with moderate loads during the first half of the 20th century.
In pure mist lubrication the oil air mist is fed under pressure to the housing.
The design of the bearing is vital for ensuring an effective process.
An oil ring collar or a wick is typically used for supplying the oil to the bearing through the use of a pressurized system.
Oil slinger design considerations and prior art the oil slinger disc arrangement is simple to understand.
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These represented the later years of the stationary steam engine and the beginnings of the high speed steam engine the internal combustion oil engine and electrical generating equipment.
A ring oiler or oil ring is a form of oil lubrication system for bearings.
Instead of greasing the part a high speed journal bearing design relies on oil lubrication.
The disc outer edge is immersed some depth into the oil.
Purge mist lubrication utilizes the same principles of pure mist but a reservoir of oil in the housing exists.
For high speed 3000 rpm and higher slinger discs or oil rings are commonly used due to the short re greasing interval exhibited with grease lubrication and the high heat generation due to churning seen with oil bath lubrication.
About two decades later in 1999 at least one major pump manufacturer saw fit to examine the situation more closely.
There is no reservoir of oil in the housing and oil rings are not used.
As it rotates oil is lifted from the sump and thrown onto the inside of the housing.
However pumps incorporating a two inch shaft operating at 3 600 rpm dn 7 200 would use oil rings sometimes called slinger rings to lift or spray the oil from a sump with its level maintained below the bearing.
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