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CRF230 - Front Hub- Same as other honda models?

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Anyone know if the front CRF230 hub is the same as the CRF250R hub? I have a project bike in mind and have a set of CR80 forks I'm putting on a CRF230 chassis. I don't have a CRF230 front wheel though... I do have CRF250R front wheels around the shop. Wondering if they are the same with just different bearings?

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Always wondered this. I think it might be more similar to the CR150R hub (four point brake caliper mount) but I really don't know for sure.

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19 hours ago, PT564 said:

Anyone know if the front CRF230 hub is the same as the CRF250R hub? I have a project bike in mind and have a set of CR80 forks I'm putting on a CRF230 chassis. I don't have a CRF230 front wheel though... I do have CRF250R front wheels around the shop. Wondering if they are the same with just different bearings?

The right bearings or spacers will make it possible for you to mount a CRF250R front wheel to CRF230F forks or CR80/85 forks.  The CRF230F and CRF250R wheels have the same size brake rotor OD, offset from the hub, etc.  The wheels themselves are enough the same to interchange.

CR80/85 forks use a 12mm OD axle, CRF230F forks use a 15mm OD axle, CRF250R forks use a 20mm OD axle.

The wheel bearings in a CRF230F front wheel are 15x35x11, wheel bearings in a CRF250R front wheel are 20x37x9.

A 12x37x9 bearing would work to interface the CRF250R wheel to CR80/85 forks.

A 15x37x9 bearing should work to interface the CRF250R wheel to CRF230F forks.

Not sure of the availability of this size bearing.

Or you could machine spacers which would be 12mm ID and 20mm OD and slide over the CR80/85 axle and into the CRF250R wheel bearings.

Or you could bore out the axle hole on the CR80/85 forks to 15mm and use a CRF150R axle which is 15mm OD.

One guy on eBay sells 15x37x9 sealed wheel bearings so they must be rather odd.

Not that I've thought about this very much.................

 

My bad, it is a 20x35x9 I was thinking of, I can't find a 15x37x9 bearing either.

http://www.ebay.com/itm/20x35x9-2RS-Rubber-Sealed-Ball-Bearing-20x35-ID-Diameter-20mm-x-OD-35mm-x-9mm/361677109737?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

Edited by MetricMuscle

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Rotor mount is different and so is the axle size.
The 230 axle and bearings are 15mm, the CRF250R are 20mm. The bearing ODs are 35 and 37 so you would need to sleeve the 250 hubs to use 230 bearings. And the bearing widths are different by 4mm so you would need to fuss with spacers.

Some metric bearings:

# …….. ID x OD x TH …. Remarks
6001 ... 12 x 28 x 8
6201 … 12 x 32 x 10 …. CR80/85 Front
16101 .. 12 x 32 x 8
6301 … 12 x 37 x 12 
16002 … 15 x 32 x 8
6002 … 15 x 32 x 9 …. CRF150R/RB Front
6202 … 15 x 35 x 11 … Front;  CRF150/230, all XR250, all XR200R, KDX200
6302      15 x 42 x 13 … XL185S rear
6003 … 17 x 35 x 10 … 89-91 RM125 front, 86 89 CR125, XR400
16003… 17 x 35 x 8 
6203 … 17 x 40 x 12 …. XR200R rear, 90-03 XR250 l side, 81-83 XR200R rt, XR400.
6303 … 17 x 47 x 14 …. 90-03 XR250 rear sprkt side, CRF230F rear, 81-83 XR200R lf
6004 … 20 x 42 x 12 … 315R Front,92 RM, 89 CR250 RR, 90-94 CR250 R 87 CR125,315R/4RT
6204 … 20 x 47 x 14 … 89-91 RM125/250 R, 90-95 XR250 RR, 89 CR250 LR 87 CR125
6904  … 20 x 37 x 9 … CRF250X front
6304 … 20 x 52 x 15 
6006 … 30 x 55 x 13 
6905 … 25 x 42 x 9 …. CRF250/450/R/X rear
 

Edited by Chuck.
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I bolted my XR250 wheel on a set of CRF150F forks on my DT175. The axles have a different shaped 17mm hex on the right side but otherwise share all measurements. Spacers are the same width but the XR right side has the speedo drive built in. 

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Well, If I can't find the 15mm x 37 mm x 9 mm bearing... does anyone have a CRF230 front hub they want to sell? 

Edited by PT564
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53 minutes ago, PT564 said:

Well, If I can't find the 15mm x 37 mm x 9 mm bearing... does anyone have a CRF230 front hub they want to sell? 

I have a nice wheel assembly off my 06. Message me if interested and we can talk about a price. Not looking to get rich but don't want to give it away. I will not be able to ship it until Tuesday when I return to work. Hope I can help you out.

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1 hour ago, PT564 said:

Well, If I can't find the 15mm x 37 mm x 9 mm bearing... does anyone have a CRF230 front hub they want to sell? 

15x37x9 bearing is not a standard metric bearing. Cruise around the table I posted and you can find some inter change pairs like the axle/bearings on the CR80/85 and CRF150R front hubs, but few others. But those few finds can make conversions so much easier. 
Metric standard ball bearings have a size code that is 3 to 5 digits, and often with a suffix code for mfg options such as grease, seals, etc. Here is some more info I have on small Metric ball bearings:

Basic Type & Series
6xx: Metric, Extra Small
60xx: Metric, Extra Light
62xx: Metric, Light
63xx: Metric, Medium
68xx: Metric, Extra Thin Section
69xx: Metric, Very Thin Section
632xx: Metric, Light Cartridge
633xx: Metric, Medium Cartridge
a "1" prefix denotes extra narrow.

Bore Size of metric bearings denoted by last two digits of the Standard Number:
00: 10 mm
01: 12 mm
02: 15 mm
03: 17 mm
(for 04 and higher: multiply last two numbers by 5 to get bore size in mm)

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Neither of those bearings are standard metric and you need the 15x37 to adapt the CRF250 wheel to a 15mm axle.  My solution would be to use some 0.025" shim stock and Loctite bearing mount to install 230 bearings in the hub, then all that is left are spacers to accommodate a  possibly different width hub.

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