November 2007

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HP Reliability: Lubricating slow-speed rolling element bearings

A sales engineer visited a customer with different pieces of processing equipment that included an oven. The customer asked a lubrication-related question and received an answer from the sales enginee..

Bloch, Heinz P., Hydrocarbon Processing Staff

A sales engineer visited a customer with different pieces of processing equipment that included an oven. The customer asked a lubrication-related question and received an answer from the sales engineer. Let's see his answer and then decide how you would have answered. The application is a rolling-element pillow-block bearing that turns less than 30 rpm and the temperature radiated from the oven is about 215°F (102°C). The sales engineer recommended an ISO Grade 100 or ISO Grade 150 (~600 SUS at 100°F) oil for this temperature and made reference to a widely used text. However, he noted that the section in the book dealt with pumps that rotated at 3,600 rpm in an elevated temp

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