Which operational are greases preferred as lubricant?

Greases are preferred as lubricants when –

• Operating pressure is high.
• Operating temperature is high (800C)
• The machine operates at high load, slow speed with intermittent jerks where oil film cannot be maintained.
• Machine parts are to be protected against the entry of water, dust and dirt.
• In a situation where dripping or spurting of oil is undesirable as in case of food, paper, textile and dyeing industry.