TPC 305 PUMP EXAMINERS QUESTIONS AND
ANSWERS SURE A+
✔✔Full-film lubrication - ✔✔Ideal condition in which two moving surfaces are completely
separated from each other
✔✔Lubricant choice - ✔✔Load, temperature, speed, and environment (surroundings)
✔✔General purpose oils usually - ✔✔One or two additives such as antioxidants and
rust preventatives
✔✔Paraffin based oils - ✔✔High viscosity, higher pour point
✔✔Mixed based oils - ✔✔The higher the ratio of paraffin base oils to naphthene base
oils, the higher the viscosity index of a given blend
✔✔Antifoam additive - ✔✔One of the most essential additives that a hydraulic oil must
have is an effective...
✔✔Highest quality circulating oil - ✔✔Turbine grade
✔✔Gear oil - ✔✔Usually has an asphalt base to provide proper adhesion
✔✔Spindle oils - ✔✔Carefully refined products, are considered premium grade and low
viscosity
✔✔Steam cylinder oils - ✔✔Sometimes compounded with animal fats
✔✔Greases - ✔✔The soap or thickener has one major function, to serve as a holding
agent
✔✔Dropping point change - ✔✔Additives or use of a higher viscosity oil
, ✔✔Calcium soap greases - ✔✔Not suited for temperatures above 180F water
disappears and water repellent
✔✔Sodium soap greases - ✔✔Don't work well around water
✔✔Lithium soap greases - ✔✔Handle extremes of temperature well and resist water
✔✔Non soap based greases - ✔✔Complex is a complicated organic molecule that traps
metal ions in a lattice of atoms
✔✔Usual percentage of oil in greases - ✔✔70 to 90%
✔✔Grease Additives - ✔✔Keep the grease from undergoing chemical changes
✔✔Extreme pressure greases - ✔✔High film strength
✔✔Special load carrying additives to lithium soap greases - ✔✔Various sulfurized oils
✔✔Lamellar greases - ✔✔Effectiveness of a grease type lubricant can also depend on
the physical shape of the solid additive particles
✔✔Silicone greases - ✔✔Special synthetic liquid. Silicone is a compound polymer.
Soap or nonsoap types
✔✔Dry film lubricants - ✔✔Most dry films are applied the same way as ordinary paints
✔✔Lubricant delivery - ✔✔One aspect is the regulation of the lubricant
✔✔Gravity lubrication - ✔✔Frequently called drip-feed oiling
✔✔Natural Lubrication - ✔✔A portion of the machine housing is used as an oil sump
✔✔Wick or pad absorbent material - ✔✔In addition a number of lubricating devices use
saturated pads
✔✔Oil mist lubricator - ✔✔The pump will probably be a gear type pump
✔✔Oil mist - ✔✔It handles larger quantities of oil and operates on very low pressure air
and uses centrifuging to mechanically reclaim oil
✔✔Oil Lubrication pumps - ✔✔Increase pressure and meter the oil. Check valve and
direct lubrication system
ANSWERS SURE A+
✔✔Full-film lubrication - ✔✔Ideal condition in which two moving surfaces are completely
separated from each other
✔✔Lubricant choice - ✔✔Load, temperature, speed, and environment (surroundings)
✔✔General purpose oils usually - ✔✔One or two additives such as antioxidants and
rust preventatives
✔✔Paraffin based oils - ✔✔High viscosity, higher pour point
✔✔Mixed based oils - ✔✔The higher the ratio of paraffin base oils to naphthene base
oils, the higher the viscosity index of a given blend
✔✔Antifoam additive - ✔✔One of the most essential additives that a hydraulic oil must
have is an effective...
✔✔Highest quality circulating oil - ✔✔Turbine grade
✔✔Gear oil - ✔✔Usually has an asphalt base to provide proper adhesion
✔✔Spindle oils - ✔✔Carefully refined products, are considered premium grade and low
viscosity
✔✔Steam cylinder oils - ✔✔Sometimes compounded with animal fats
✔✔Greases - ✔✔The soap or thickener has one major function, to serve as a holding
agent
✔✔Dropping point change - ✔✔Additives or use of a higher viscosity oil
, ✔✔Calcium soap greases - ✔✔Not suited for temperatures above 180F water
disappears and water repellent
✔✔Sodium soap greases - ✔✔Don't work well around water
✔✔Lithium soap greases - ✔✔Handle extremes of temperature well and resist water
✔✔Non soap based greases - ✔✔Complex is a complicated organic molecule that traps
metal ions in a lattice of atoms
✔✔Usual percentage of oil in greases - ✔✔70 to 90%
✔✔Grease Additives - ✔✔Keep the grease from undergoing chemical changes
✔✔Extreme pressure greases - ✔✔High film strength
✔✔Special load carrying additives to lithium soap greases - ✔✔Various sulfurized oils
✔✔Lamellar greases - ✔✔Effectiveness of a grease type lubricant can also depend on
the physical shape of the solid additive particles
✔✔Silicone greases - ✔✔Special synthetic liquid. Silicone is a compound polymer.
Soap or nonsoap types
✔✔Dry film lubricants - ✔✔Most dry films are applied the same way as ordinary paints
✔✔Lubricant delivery - ✔✔One aspect is the regulation of the lubricant
✔✔Gravity lubrication - ✔✔Frequently called drip-feed oiling
✔✔Natural Lubrication - ✔✔A portion of the machine housing is used as an oil sump
✔✔Wick or pad absorbent material - ✔✔In addition a number of lubricating devices use
saturated pads
✔✔Oil mist lubricator - ✔✔The pump will probably be a gear type pump
✔✔Oil mist - ✔✔It handles larger quantities of oil and operates on very low pressure air
and uses centrifuging to mechanically reclaim oil
✔✔Oil Lubrication pumps - ✔✔Increase pressure and meter the oil. Check valve and
direct lubrication system
