Taper Roller Bearings - Standard Distance

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kns Active Contributor Join Date: Dec 2008 Posts: 10	Taper Roller Bearings - Standard Distance 03/10/2009 7:03 AM
	Dear All, I am using two tapper Roller Bearing. I keep the bearing closely the distance between two bearing is 20mm. Is there any standard distance to be maintained between the bearing.
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sb Guru Join Date: Mar 2007 Posts: 2550 Good Answers: 103	#1 Re: Taper Roller Bearings - Standard Distance 03/10/2009 9:52 AM
	The distance between the bearings are depending on the forces on the bearing. If you take the axis of the bearings, they intersect the shaft axis at some points. The distance between these two points are the critical factor and gives the rigidity against "overturning" moment. More is the gap, better it is against overturning. (second sketch) However if the overturning is not expected, then the lesser spread provides better bearing loading. (first sketch) The critical dimension is the dimension X. __________________ Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
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Anonymous Poster	#2 Re: Taper Roller Bearings - Standard Distance 03/10/2009 4:20 PM
	the way you put it, no. post a schematic so that you can get more informed advice.
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Anonymous Poster	#3 Re: Taper Roller Bearings - Standard Distance 03/11/2009 3:09 AM
	Dear all, when you are assemblying tow taper bearings you have take in your consideration taper bearings axial clearance and you have to measure the axial clearance after bearings mounting at shaft centre by dail indicator , if the clearnce will be low bearings will suffer from thermal stress and preloading and if it will be bigger bearings will suffer from impact loads . the axial clearnce value for certain bearing size is constant with any bearings distances and it is variable only with bearing size (bearing dimensions). the values of axial clearnce have to be given by equipment vendor . In case there are no enough data you can take SKF recommendations of assemblying tow taper bearings as one set
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