Thursday 13 October 2016

Lubrication



petroleum courses in Rawalpindi.

Pumping units should be given periodic lubrication and maintenance checks. When they are subjected to heavy variable loads, extreme temperature conditions, or adverse moisture or dust conditions, it might be necessary to increase the frequency of the checks. Technical Data used in the field explained in petroleum courses in Rawalpindi.
Structural Bearings
All the structural bearings (i.e., center bearings, equalizer bearings, crank pin bearings, etc.) require an adequate amount of the proper type of lubricant. A fluid lubricant  is more efficient in moving to the areas where the lubricant is most needed within the bearing housing; however, good quality grades of greases are recommended by most manufacturers for their particular bearings. In general, sleeve type beatings require oil as a lubricant and antifriction type bearings operate satisfactorily with grease lubrication. Some more details of petroleum courses in rawalpindi are as under.
Gear Reducers
Lubrication procedures for gear reducer drives and chain drives are recommended in accordance with API standards. Temperature and viscosity ranges for gear reducers and chain reducers are tabulated in API RP 1 1G3 It is not possible to describe adequately suitable lubricants by brief specifications or by Sot . of Automotive Engineers (SAE) or Intl. Standards Organization (ISO) viscosity numbers alone. Adequate lubrication instructions cannot be condensed sufficiently to be placed on the nameplate because of the many variables in operating conditions to which pumping units are subjected.
The proper oil for pumping unit gear reducers is best chosen with the advice of a representative of a reputable supplier of lubricants and should be based on the service conditions that are established by the design of the reducer and the service conditions of the particular installation.
The areas in contact on gear teeth and on chains and sprockets are relatively small, and, therefore, the unit pressures produced in transmitting high torque loads are correspondingly high. These gears, chains, and sprockets are designed to operate under these high unit pressures provided the lubricant used is also capable of withstanding these unit pressures during the periods of peak loads.
The temperature of the air in the vicinity of the reducer is of considerable importance in selecting oil of the proper viscosity. For high-temperature operations, an oil with a higher SAE or IS0 viscosity number should be selected. For low-temperature operations, the oil should have sufficient fluidity to insure a free flow of oil through the lubricating channels. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join petroleum courses in Islamabad.

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