Podcast
Questions and Answers
What is the primary location of wear in a bearing?
What is the primary location of wear in a bearing?
- When the shaft is rotating at a constant speed
- During stopping and starting periods (correct)
- When the shaft is rotating at high speed
- When the shaft is not rotating at all
What is the purpose of the oil film in a shaft bearing?
What is the purpose of the oil film in a shaft bearing?
- To increase the friction between the shaft and the bearing
- To reduce the pressure on the bearing
- To reduce the temperature of the bearing
- To separate the shaft from the bearing surface (correct)
What is the main advantage of using white-metal alloy in sleeve bearings?
What is the main advantage of using white-metal alloy in sleeve bearings?
- It is very hard and resistant to wear
- It is highly corrosive
- It is soft and can conform to load conditions (correct)
- It is very expensive
What is the purpose of the oil ring in a ring-oiled bearing?
What is the purpose of the oil ring in a ring-oiled bearing?
Why are grooves in the pressure area of a bearing considered harmful?
Why are grooves in the pressure area of a bearing considered harmful?
What is the primary function of the feeding device in a sleeve bearing?
What is the primary function of the feeding device in a sleeve bearing?
What happens to the oil film as the shaft speed increases?
What happens to the oil film as the shaft speed increases?
What is the purpose of chamfering or rounding corners in bearings?
What is the purpose of chamfering or rounding corners in bearings?
What is the main advantage of using a continuous oil supply in a bearing?
What is the main advantage of using a continuous oil supply in a bearing?
What happens to the shaft as it begins to rotate in a bearing?
What happens to the shaft as it begins to rotate in a bearing?
What is the primary purpose of grooves in bearings?
What is the primary purpose of grooves in bearings?
Where should the lubricant application point be located in a bearing?
Where should the lubricant application point be located in a bearing?
What is a common sign of a failing bearing?
What is a common sign of a failing bearing?
What is the purpose of water cooling in bearings?
What is the purpose of water cooling in bearings?
How can emergency cooling of a hot sleeve bearing be achieved?
How can emergency cooling of a hot sleeve bearing be achieved?
What happens when water is applied directly to a hot bearing?
What happens when water is applied directly to a hot bearing?
What type of force is exerted on a bearing due to the weight of the shaft?
What type of force is exerted on a bearing due to the weight of the shaft?
What is the purpose of chamfering or rounding off sharp edges in bearings?
What is the purpose of chamfering or rounding off sharp edges in bearings?
Why is it important to monitor the temperature of large bearings in critical machinery?
Why is it important to monitor the temperature of large bearings in critical machinery?
What is the purpose of an auxiliary groove in a bearing?
What is the purpose of an auxiliary groove in a bearing?
What is the primary cause of radial forces on bearings?
What is the primary cause of radial forces on bearings?
What is the term used to describe forces parallel to the axis of the shaft?
What is the term used to describe forces parallel to the axis of the shaft?
What type of bearing is designed to handle axial thrust?
What type of bearing is designed to handle axial thrust?
What is the purpose of a thrust bearing?
What is the purpose of a thrust bearing?
What type of lubrication is used in a collar thrust bearing?
What type of lubrication is used in a collar thrust bearing?
What type of bearing does not permit metal-to-metal contact and establishes oil wedges to carry the entire load?
What type of bearing does not permit metal-to-metal contact and establishes oil wedges to carry the entire load?
What is the primary advantage of antifriction bearings over other types of bearings?
What is the primary advantage of antifriction bearings over other types of bearings?
What is the purpose of the separator in an antifriction bearing?
What is the purpose of the separator in an antifriction bearing?
What type of antifriction bearing has tapered rolling elements?
What type of antifriction bearing has tapered rolling elements?
What is the term used to describe the bearing surfaces in a tilting pad thrust bearing?
What is the term used to describe the bearing surfaces in a tilting pad thrust bearing?
What is the maximum amount of grease that should be added to an antifriction bearing after cleaning?
What is the maximum amount of grease that should be added to an antifriction bearing after cleaning?
What is the primary cause of antifriction bearing failure, even with proper maintenance and lubrication?
What is the primary cause of antifriction bearing failure, even with proper maintenance and lubrication?
What is the effect of a hard mass forming within the bearing due to poor lubricant quality?
What is the effect of a hard mass forming within the bearing due to poor lubricant quality?
What is the result of pressing a bearing onto a shaft with uneven force application?
What is the result of pressing a bearing onto a shaft with uneven force application?
What is the maximum operating temperature that antifriction bearings can generally withstand?
What is the maximum operating temperature that antifriction bearings can generally withstand?
What is the result of misalignment of a shaft in an antifriction bearing?
What is the result of misalignment of a shaft in an antifriction bearing?
What is the main purpose of lubrication in antifriction bearings?
What is the main purpose of lubrication in antifriction bearings?
Why is oil preferred for lubricating antifriction bearings in high-speed applications?
Why is oil preferred for lubricating antifriction bearings in high-speed applications?
What is a potential problem with overfilling a bearing with grease?
What is a potential problem with overfilling a bearing with grease?
What is the purpose of the seals in an antifriction bearing?
What is the purpose of the seals in an antifriction bearing?
Why is grease preferred for lubricating antifriction bearings in applications where speeds are moderate and temperatures are not extreme?
Why is grease preferred for lubricating antifriction bearings in applications where speeds are moderate and temperatures are not extreme?
What is a factor that determines the type of grease to use in an antifriction bearing?
What is a factor that determines the type of grease to use in an antifriction bearing?
What is a consequence of mixing different types of grease in an antifriction bearing?
What is a consequence of mixing different types of grease in an antifriction bearing?
Why is it important to know how much grease to add to an antifriction bearing?
Why is it important to know how much grease to add to an antifriction bearing?
What is the purpose of the lubricating film in plain or shell bearings?
What is the purpose of the lubricating film in plain or shell bearings?
Why is steam cylinder oil sometimes necessary for lubricating antifriction bearings?
Why is steam cylinder oil sometimes necessary for lubricating antifriction bearings?
What is a factor that determines how often bearings need to be lubricated?
What is a factor that determines how often bearings need to be lubricated?
Why is it important to warm up equipment before adding grease?
Why is it important to warm up equipment before adding grease?
What is the purpose of removing the drain plug before adding new grease?
What is the purpose of removing the drain plug before adding new grease?
What is the benefit of using an automatic lubricator?
What is the benefit of using an automatic lubricator?
How often does an oil-lubricated bearing typically need to be cleaned?
How often does an oil-lubricated bearing typically need to be cleaned?
What is the first step in cleaning a bearing without dismantling it?
What is the first step in cleaning a bearing without dismantling it?
What should be done after adding new grease to a bearing?
What should be done after adding new grease to a bearing?
What happens to excess grease after adding new grease to a bearing?
What happens to excess grease after adding new grease to a bearing?
What should be done to the end of the grease gun before attaching it to the fitting?
What should be done to the end of the grease gun before attaching it to the fitting?
What is the purpose of a single point automatic lubricator?
What is the purpose of a single point automatic lubricator?
What is the recommended method to remove a bearing from a shaft?
What is the recommended method to remove a bearing from a shaft?
What should be done to the bearing after it has been removed from the shaft?
What should be done to the bearing after it has been removed from the shaft?
What is the purpose of dipping the bearing in rust preventer and wrapping it in greaseproof paper?
What is the purpose of dipping the bearing in rust preventer and wrapping it in greaseproof paper?
Why should the shaft or housing be absolutely clean before installing a bearing?
Why should the shaft or housing be absolutely clean before installing a bearing?
What is the ideal temperature for expanding a bearing to be installed on a shaft?
What is the ideal temperature for expanding a bearing to be installed on a shaft?
What should be done to the bearing after it has been heated to the ideal temperature?
What should be done to the bearing after it has been heated to the ideal temperature?
What should be checked for after the bearing has been cleaned and lubricated?
What should be checked for after the bearing has been cleaned and lubricated?
Why should special heat resistant gloves be used when installing a bearing?
Why should special heat resistant gloves be used when installing a bearing?
What is the purpose of the temperature sensor in the induction heater?
What is the purpose of the temperature sensor in the induction heater?
What should be avoided when dismantling a bearing?
What should be avoided when dismantling a bearing?
What is the primary characteristic of boundary lubrication?
What is the primary characteristic of boundary lubrication?
What type of lubrication is also known as flood lubrication?
What type of lubrication is also known as flood lubrication?
What is the critical factor in boundary lubrication at slow speeds and heavy loads?
What is the critical factor in boundary lubrication at slow speeds and heavy loads?
Under what conditions should solid lubricants be used?
Under what conditions should solid lubricants be used?
What is necessary for fluid film lubrication to occur?
What is necessary for fluid film lubrication to occur?
What is the result of a rapidly revolving shaft in a turbine or engine main bearing?
What is the result of a rapidly revolving shaft in a turbine or engine main bearing?
What is the primary factor that determines the type of lubrication used in a bearing?
What is the primary factor that determines the type of lubrication used in a bearing?
What is the result of metal-to-metal contact between the surfaces in a bearing?
What is the result of metal-to-metal contact between the surfaces in a bearing?
What is the minimum condition required for fluid film lubrication to occur?
What is the minimum condition required for fluid film lubrication to occur?
What is the purpose of the lubricant film in boundary lubrication?
What is the purpose of the lubricant film in boundary lubrication?
What is the characteristic of grease that makes it suitable for use in slow speed and heavy load applications?
What is the characteristic of grease that makes it suitable for use in slow speed and heavy load applications?
What is the condition required for the shaft to float on a film of oil in fluid film lubrication?
What is the condition required for the shaft to float on a film of oil in fluid film lubrication?
What is the primary factor that determines the effectiveness of fluid film lubrication in a shaft bearing?
What is the primary factor that determines the effectiveness of fluid film lubrication in a shaft bearing?
Why is the white-metal alloy used in sleeve bearings?
Why is the white-metal alloy used in sleeve bearings?
What is the purpose of the oil ring in a ring-oiled bearing?
What is the purpose of the oil ring in a ring-oiled bearing?
What happens to the oil film as the shaft speed decreases?
What happens to the oil film as the shaft speed decreases?
What is the purpose of grooves in the non-pressure area of a bearing?
What is the purpose of grooves in the non-pressure area of a bearing?
What is the primary advantage of using a continuous oil supply in a bearing?
What is the primary advantage of using a continuous oil supply in a bearing?
What is the result of having sharp corners at the joints of a bearing?
What is the result of having sharp corners at the joints of a bearing?
What is the primary characteristic of the pumping action of the rotating shaft in a bearing?
What is the primary characteristic of the pumping action of the rotating shaft in a bearing?
What is the primary purpose of the bearing clearance space in a shaft bearing?
What is the primary purpose of the bearing clearance space in a shaft bearing?
What is the primary cause of wear in a bearing?
What is the primary cause of wear in a bearing?
What is the primary function of tilting pad bearings in industrial steam turbines?
What is the primary function of tilting pad bearings in industrial steam turbines?
Why are axial thrust bearings designed to handle forces parallel to the axis of the shaft?
Why are axial thrust bearings designed to handle forces parallel to the axis of the shaft?
What is the main characteristic of radial forces acting on bearings?
What is the main characteristic of radial forces acting on bearings?
What is the purpose of the separator in antifriction bearings?
What is the purpose of the separator in antifriction bearings?
What type of bearing is designed to handle radial loads?
What type of bearing is designed to handle radial loads?
What is the main purpose of chamfering or rounding off sharp edges in bearings?
What is the main purpose of chamfering or rounding off sharp edges in bearings?
What is the primary cause of radial forces on bearings?
What is the primary cause of radial forces on bearings?
What is the result of sliding friction in antifriction bearings?
What is the result of sliding friction in antifriction bearings?
What is the purpose of locating the lubricant application point in a portion of the bearing not under pressure?
What is the purpose of locating the lubricant application point in a portion of the bearing not under pressure?
What is the primary advantage of antifriction bearings over other types of bearings?
What is the primary advantage of antifriction bearings over other types of bearings?
What is the term used to describe forces perpendicular to the axis of the shaft?
What is the term used to describe forces perpendicular to the axis of the shaft?
What is the consequence of water being applied directly to a hot bearing?
What is the consequence of water being applied directly to a hot bearing?
What is the primary function of the collar thrust bearing?
What is the primary function of the collar thrust bearing?
What is the purpose of an auxiliary groove in a bearing?
What is the purpose of an auxiliary groove in a bearing?
What is the primary cause of shaft seizure in a bearing?
What is the primary cause of shaft seizure in a bearing?
What is the characteristic of the bearing material in collar thrust bearings?
What is the characteristic of the bearing material in collar thrust bearings?
What is the purpose of monitoring the temperature of large bearings in critical machinery?
What is the purpose of monitoring the temperature of large bearings in critical machinery?
What is the primary advantage of using water-cooled bearings?
What is the primary advantage of using water-cooled bearings?
What is the consequence of improper bearing design?
What is the consequence of improper bearing design?
What is the primary factor in determining the location of the lubricant application point in a bearing?
What is the primary factor in determining the location of the lubricant application point in a bearing?
What is the primary purpose of lubrication in antifriction bearings?
What is the primary purpose of lubrication in antifriction bearings?
What is the consequence of overfilling a bearing with grease?
What is the consequence of overfilling a bearing with grease?
Why is grease preferred in applications where speeds are moderate and temperatures are not extreme?
Why is grease preferred in applications where speeds are moderate and temperatures are not extreme?
What is the purpose of the seals in an antifriction bearing?
What is the purpose of the seals in an antifriction bearing?
What is the primary factor that determines the type of lubrication used in a bearing?
What is the primary factor that determines the type of lubrication used in a bearing?
What is the result of mixing different types of grease in an antifriction bearing?
What is the result of mixing different types of grease in an antifriction bearing?
What is the primary purpose of lubrication in plain or shell bearings?
What is the primary purpose of lubrication in plain or shell bearings?
Why is oil preferred in high-speed applications?
Why is oil preferred in high-speed applications?
What is the benefit of using a continuous oil supply in a bearing?
What is the benefit of using a continuous oil supply in a bearing?
What is the purpose of the bearing seals in preventing corrosion?
What is the purpose of the bearing seals in preventing corrosion?
What is the primary reason why a lubricant should not form a hard mass within the bearing?
What is the primary reason why a lubricant should not form a hard mass within the bearing?
What is the term for the indentations that can occur in the race surfaces of a stationary bearing due to vibration?
What is the term for the indentations that can occur in the race surfaces of a stationary bearing due to vibration?
What is the maximum operating temperature that antifriction bearings can generally withstand?
What is the maximum operating temperature that antifriction bearings can generally withstand?
What is the consequence of improper fitting of a bearing onto a shaft?
What is the consequence of improper fitting of a bearing onto a shaft?
What is the purpose of removing the end covers when cleaning an oil-lubricated bearing?
What is the purpose of removing the end covers when cleaning an oil-lubricated bearing?
What is the recommended maximum amount of grease to add to an antifriction bearing after cleaning?
What is the recommended maximum amount of grease to add to an antifriction bearing after cleaning?
What is the result of not allowing excess grease to be expelled through the open drain plug after adding new grease?
What is the result of not allowing excess grease to be expelled through the open drain plug after adding new grease?
What is the primary cause of premature bearing failure due to misalignment?
What is the primary cause of premature bearing failure due to misalignment?
Why is it important to warm up equipment before adding grease?
Why is it important to warm up equipment before adding grease?
What is the purpose of using a single point automatic lubricator?
What is the purpose of using a single point automatic lubricator?
What is the consequence of not cleaning the bearing properly before re-lubricating?
What is the consequence of not cleaning the bearing properly before re-lubricating?
What is the purpose of squirting some grease from the end of the gun to clear it of debris?
What is the purpose of squirting some grease from the end of the gun to clear it of debris?
What is the result of not allowing the machine to run after adding new grease?
What is the result of not allowing the machine to run after adding new grease?
What is the purpose of using a multi-point automatic lubricator?
What is the purpose of using a multi-point automatic lubricator?
What is the consequence of using a grease gun that is not properly cleaned and maintained?
What is the consequence of using a grease gun that is not properly cleaned and maintained?
What is the purpose of using a web-based calculator to determine the re-greasing interval?
What is the purpose of using a web-based calculator to determine the re-greasing interval?
What is the primary purpose of soaking the bearing in a clean solvent after it has been removed from the shaft?
What is the primary purpose of soaking the bearing in a clean solvent after it has been removed from the shaft?
What should be done to the bearing after it has been heated to the ideal temperature for installation?
What should be done to the bearing after it has been heated to the ideal temperature for installation?
What is the purpose of using a bearing puller to remove the bearing from the shaft?
What is the purpose of using a bearing puller to remove the bearing from the shaft?
What is the result of not properly cleaning the shaft or housing before installing a bearing?
What is the result of not properly cleaning the shaft or housing before installing a bearing?
What should be done to the bearing after it has been cleaned and inspected?
What should be done to the bearing after it has been cleaned and inspected?
What is the purpose of using clean heat-resistant gloves when handling bearings during installation?
What is the purpose of using clean heat-resistant gloves when handling bearings during installation?
What is the ideal temperature range for expanding a bearing to be installed on a shaft?
What is the ideal temperature range for expanding a bearing to be installed on a shaft?
What is the purpose of rotating the bearing by hand while submerged in a solvent?
What is the purpose of rotating the bearing by hand while submerged in a solvent?
What should be done to the bearing if it is found to be in satisfactory condition after inspection?
What should be done to the bearing if it is found to be in satisfactory condition after inspection?
What is the result of uneven force application when removing a bearing from a shaft?
What is the result of uneven force application when removing a bearing from a shaft?
