Cautions for handling
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Transcript of Cautions for handling
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Cautions for handling• Store condition• Clean• Non-Humid• Place which is not exposed to direct sunshine• Air flow between the box and floor
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No Good !!
Untidy
Dusty
Humidity Sunshine
Danger
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Fitting a Bearing on the Shaft
Always press the ring to be fitted.
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Mounting
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Fitting a Bearing into a Housing
Always press on the ring to be fitted.
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Mounting
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Thermal Mounting
Under no circumstances should you heat a bearing
by directly putting the torch on the bearing surface.
• Use oven, hot plate, or NSK bearing induction heater
• Clean heating apparatus
• Exercise care when using hot oil bath
• Do not heat above 248 deg F (120 deg C)
• Reference inner ring expansion chart in NSK catalog, fig. 14.3
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• Precautions
– Make Sure Oil Is Free of Sludge
– Control Temperature, Do Not Overheat
– Keep Tank Covered When Not In
• Advantages
– Heat Large Heats Efficiently
– Safe For Bearing
• Disadvantages
– Oil Can Contaminate Bearing
– Heating Oil May Not Compatible with Lube
– Can Not Heat Sealed Bearings By This Method
Without using flames or oil uniform heating in short time is possible, making shrink fitting efficient and clean.
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Bearing Removal Procedures
• Mark position/orientation of bearing
• Remove very carefully to avoid damage to shaft/housing
• Use appropriate tools (not hammers)
• Apply pressure to the ring with the interference fit
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Dismounting
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Dismounting
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Dismounting by puller
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Misalignment
Misalignment due to the bearing
being mounted out of square.