1
Cautions for handling• Store condition• Clean• Non-Humid• Place which is not exposed to direct sunshine• Air flow between the box and floor
2
No Good !!
Untidy
Dusty
Humidity Sunshine
Danger
3
Fitting a Bearing on the Shaft
Always press the ring to be fitted.
4
Mounting
5
Fitting a Bearing into a Housing
Always press on the ring to be fitted.
6
Mounting
7
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
8
• 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.
9
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
10
Dismounting
11
Dismounting
12
Dismounting by puller
13
Misalignment
Misalignment due to the bearing
being mounted out of square.
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