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Anonymous
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Anyone have a substitution for the deep-groove double-row wheel bearings (1 fore, 1 aft) NM.17721, aka 4203 in a double-sealed version? I understand there may be a substitution that is 1.5mm wider. Thanks!
dynodave said:This link show the mod for putting in the wider sealed double row bearing....
http://www.oldbritts.com/wheel_upgrade.html
I haven't yet felt the need to try it. Grease the stock bearing every time you change the tire and you should be fine.
bill said:try a 5203 at your frindly bearing house
bill
Anyone have a substitution for the deep-groove double-row wheel bearings (1 fore, 1 aft) NM.17721, aka 4203 in a double-sealed version? I understand there may be a substitution that is 1.5mm wider. Thanks!
There is a European made 4203-2RS that is 17X40X16 available. Walridge Motors (Canada) has them for $54.40 CD$.Re: bill
OK, thanks Bill! Both the 5203 and 5203-2RS are 17x40x17.5 vs. the 4203's 17x40x16, thus being 1.5mm wider than the standard bearing. So, the mod would have to be performed to "both ends" to get 'em to work, but w/ the 5203-2RS you'd have a sealed bearing.