Tobee® utilises anti-friction rolling element slurry pump bearings. They may be either grease or oil lubricated. The advantages and disadvantages of each type are shown in below table.
Grease lubrication has been found to be the best choice for virtually all the applications of Tobee® bearing assemblies (both horizontal and vertical types). The large population of Tobee grease lubricated slurry pumps is testimony to this fact.
Oil lubrication (ie the bearings dip into a bath of oil in the bottom of the oil bath lubrication) can offer improved operating performance for low temperatures or wide temperature ranges as well as higher speeds than grease. The primary reason for selecting oil for high speeds is that grease is flung off the bearing, which will cause metal to metal contact and subsequent failure.
• Proven experience. More than 5,000 Tobee slurry pumps operating worldwide lubricated with grease.
• Grease and then plug off — regular re-greasing is normally not necessary between maintenance intervals
• Condition of grease cannot be monitored externally
• Re-greasing can introduce contaminants, especially if
• Oil level and condition can be visually checked by means of a dipstick or sight glass (even while running)
• More oil can be added or whole system drained and refilled without dismantling the bearing assembly
• Tobee® adjustable bearing assembly design does not allow optimum airflow for heat dissipation
• Sealing is critical. Leaked oil collects dirt.
Lubricants used in Centrifugal Slurry Pumps
Download PDF version: Slurry Pump Lubrication.pdf