Author Topic: Steering Head Bearings  (Read 1957 times)

Offline Bryanj

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Re: Steering Head Bearings
« Reply #15 on: August 19, 2021, 10:00:11 PM »
You could get needle roller conversions from the US some years back but they didnt last long as the bearings only really last when they are rotating, remember the mono shock rear bears that needed changing  nearly every mot

Offline Andych

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Re: Steering Head Bearings
« Reply #16 on: August 19, 2021, 11:46:55 PM »
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Offline McCabe-Thiele (Ted)

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Re: Steering Head Bearings
« Reply #17 on: August 20, 2021, 09:49:30 AM »
That H264815 bearing number has measurements of 26 x 48.5 x 15 as per the link below.
https://simplybearings.co.uk/shop/p554001/H264815-Narrow-Section-Steering-Head-Set-Taper-Roller-Bearing-26x48.5x15mm/product_info.html
I think you are onto something here it's the part number not the actual bearing size!
Either way you can get the right upper taper roller that's not too tall.

Out of interest nobody appears to list a 26 x 48 x15 bearing on the couple of sites I have checked on.
« Last Edit: August 20, 2021, 04:12:12 PM by Macabethiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Bryanj

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Re: Steering Head Bearings
« Reply #18 on: August 20, 2021, 02:28:13 PM »
Thats because the taper rollers that fit the bikes are not a standard sizr

Offline AndyD

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Re: Steering Head Bearings
« Reply #19 on: August 20, 2021, 04:32:04 PM »
Update on the Wemoto bearings.
Had another play with the upper set - popped a couple of loose ball bearings in to see how it would build up if the caged bearings did fit properly.
The race seems correct and as original but the cone is quite different and when fitted the set is several mm higher than standard so not much use.
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Shame as the bottom set seems perfect and the top would be if the cage fitted and the cone was the same profile as original.
I just wonder why someone has put together all these varieties of replacement bearing sets that just aren't correct.
Wemoto are looking into this so maybe the supplier can explain / correct things.
Cheers,
Andy

Offline McCabe-Thiele (Ted)

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Re: Steering Head Bearings
« Reply #20 on: August 20, 2021, 05:16:32 PM »
Update on the Wemoto bearings.
Had another play with the upper set - popped a couple of loose ball bearings in to see how it would build up if the caged bearings did fit properly.
The race seems correct and as original but the cone is quite different and when fitted the set is several mm higher than standard so not much use.
(Attachment Link) (Attachment Link)
Shame as the bottom set seems perfect and the top would be if the cage fitted and the cone was the same profile as original.
I just wonder why someone has put together all these varieties of replacement bearing sets that just aren't correct.
Wemoto are looking into this so maybe the supplier can explain / correct things.
Cheers,
Andy

This was the set of plain rollers I bought when I could not find a suitable upper taper. At £15 for the pair not too expensive. I'm pretty sure you will be able to buy just the upper bearing if you contact the firm. The dimensions given I can confirm were accurate. Might be worth sending a PM to 4wDaz he sourced me some Primary Drive bearings at a great price.

https://www.ebay.co.uk/itm/324462234796
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline McCabe-Thiele (Ted)

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Re: Steering Head Bearings
« Reply #21 on: August 22, 2021, 04:07:40 PM »
Although I'm sticking with my existing mixture of bearing types I have purchased the top taper roller bearing from Pyramid parts and can confirm they are the same dimensions including the all important height at 15 mm. So looks like anyone can fit taper rollers if they want to on a 400/4. I'm thinking of fitting some sort or shield/deflector to reduce water reaching the lower races. I'm sure with it having a 3 mm spacer a better seal could be fitted.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Athame57

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Re: Steering Head Bearings
« Reply #22 on: August 22, 2021, 08:08:02 PM »
Although I'm sticking with my existing mixture of bearing types I have purchased the top taper roller bearing from Pyramid parts and can confirm they are the same dimensions including the all important height at 15 mm. So looks like anyone can fit taper rollers if they want to on a 400/4. I'm thinking of fitting some sort or shield/deflector to reduce water reaching the lower races. I'm sure with it having a 3 mm spacer a better seal could be fitted.
Which size would I need to order from them on their drop menu? https://pyramid-parts.com/products/ssbmain
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Offline McCabe-Thiele (Ted)

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Re: Steering Head Bearings
« Reply #23 on: August 22, 2021, 08:33:51 PM »
Although I'm sticking with my existing mixture of bearing types I have purchased the top taper roller bearing from Pyramid parts and can confirm they are the same dimensions including the all important height at 15 mm. So looks like anyone can fit taper rollers if they want to on a 400/4. I'm thinking of fitting some sort or shield/deflector to reduce water reaching the lower races. I'm sure with it having a 3 mm spacer a better seal could be fitted.
Which size would I need to order from them on their drop menu? https://pyramid-parts.com/products/ssbmain

For the top one it's 26 x 48.5 x 15 you have options for the lower one they list  for 30 x 50 x 14 with an appropriate spacer (they do list one at only 13 mmm tall). Quite a few sellers make bottom roller bearings that fit so other makes are available.

This link is for individual bearings rather than a kit.https://www.ebay.co.uk/itm/290781743090?var=590082068373

Kit looks like BR29 & it has seals!    https://pyramid-parts.com/products/ssbmain?variant=40126403591

Helpful fitting guide too.https://pyramid-parts.com/pages/steering-head-bearings-fitment-guide

Please double check my findings before you order.
« Last Edit: August 22, 2021, 08:45:15 PM by Macabethiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

 

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