Wheel bearing cross reference for 1"x21x52mm HD #9247
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Road Master
Joined: Aug 2006
Posts: 1,148
Likes: 157
From: Banning, CA
Wheel bearing cross reference for 1"x21x52mm HD #9247
Looking to replace my wheel bearings when I do the rear tire soon on my '06 SG. Hoping
to find some from SKF, Nachi or another supplier rather than MOCO's that seem to fail
too soon - recently anyway. Can anyone help me out with manufactures cross reference
numbers? The charts I've looked at don't show Harley at all and need a cross for HD's
9247 bearing. Also, wondering where Drag's bearings are made??? Tnx in advance.
to find some from SKF, Nachi or another supplier rather than MOCO's that seem to fail
too soon - recently anyway. Can anyone help me out with manufactures cross reference
numbers? The charts I've looked at don't show Harley at all and need a cross for HD's
9247 bearing. Also, wondering where Drag's bearings are made??? Tnx in advance.
Club Member
Joined: Mar 2009
Posts: 66,106
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From: Niles Canyon Ca.
Most of the aftermarket bearings come from China so heads up . Hit a local Indy shop and see what they can do for you or pick up a used from them to take to a local industrial bearing supply house locally . They will be able to cross reference and educate you a bit on the grades available for longer life . Good luck .
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
Current wheel bearings are available to fit 3/4", 1" and 25mm axles, but with the same OD, to fit all wheels. I suspect they are not a stock size, but special to H-D. It may be there are no substitutes available.
Road Warrior
Joined: Nov 2007
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Can't remember the numbers but I use SKF. Usa, Sweden or Germany. They have them.
But get them from a industrial vender--less that 15 dollors each.
Or as said, online 8 for $15. Thats not for me.
But get them from a industrial vender--less that 15 dollors each.
Or as said, online 8 for $15. Thats not for me.
Last edited by Old Gunny; Sep 14, 2011 at 05:09 PM.
Club Member
Joined: Jun 2007
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From: Bedford UK
Thread Starter
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Road Master
Joined: Aug 2006
Posts: 1,148
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From: Banning, CA
vendors that not available - metric & 1 inch. Got any info?
Club Member
Joined: Mar 2009
Posts: 66,106
Likes: 51,387
From: Niles Canyon Ca.
That would be 52mm x 21mm x 25.5mm ( or 26mm ) not 1 inch vendors take that part literally they don't associate very well doing cross overs like that I've found .
Good luck .
Good luck .
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Road Master
Joined: Aug 2006
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From: Banning, CA
Tnx...........
Tnx - I'll try that. Most everything is mm these days - even MOCO's new ones.
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Joined: Apr 2007
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From: Davie, FL
The bearing size mentioned by the OP is correct and is readily available. They measure the axle size (3/4" or 1") X 52mm OD X 21mm thick. The 25mm axle is 6mm thinner thus allows for a ABS sensor in all stock (2000 ~ current) FL front wheels.
The 21mm wide bearings have a double row of ball bearings, the 15mm wide is found in the new style wheels and has only a single row of ball bearings. There is also a 25mm (ID) bearing with a double row of ball bearings. These are also 21mm wide and a recommended upgrade for all of those without ABS. Of course the outer wheel axle spaces must be shortened to accommodate the thicker bearings.
There are many makers of bearings and a few great ones are located in China. The pricing is not as cheap as the non-industrial ones people buy on e-Bay. All machine parts have tolerances and that should be the factor you should look for in purchasing and not the country or origin.
The 21mm wide bearings have a double row of ball bearings, the 15mm wide is found in the new style wheels and has only a single row of ball bearings. There is also a 25mm (ID) bearing with a double row of ball bearings. These are also 21mm wide and a recommended upgrade for all of those without ABS. Of course the outer wheel axle spaces must be shortened to accommodate the thicker bearings.
There are many makers of bearings and a few great ones are located in China. The pricing is not as cheap as the non-industrial ones people buy on e-Bay. All machine parts have tolerances and that should be the factor you should look for in purchasing and not the country or origin.
Road Warrior
Joined: Nov 2007
Posts: 1,984
Likes: 7
Go to skf site and look at the single row bearings for your size, may have to look around a little bit but you will fine the size you need.
I am out of town now and cannot get to my stuff or I would help there.
In my experience the thing for the bearings to live is to install the carefully. Do not jame them in. One side goes in to the lip there. Then the spacer. Then the other side till the inner race Just touches. Just touches is the thing. If jammed in hard or even just a little bit too much the ***** are hard against the races inside the bearing. Short life.
I am out of town now and cannot get to my stuff or I would help there.
In my experience the thing for the bearings to live is to install the carefully. Do not jame them in. One side goes in to the lip there. Then the spacer. Then the other side till the inner race Just touches. Just touches is the thing. If jammed in hard or even just a little bit too much the ***** are hard against the races inside the bearing. Short life.