Wemoto Swingarm Bearing Set?
Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
- tanto
- Site Supporter
- Posts: 218
- Joined: Sat Oct 09, 2010 1:15 am
- Bike owned: NC30, Raleigh Chopper
- Location: Back in the UK.
Wemoto Swingarm Bearing Set?
Does anyone have experience of the Wemoto Swingarm Bearing Set? What is the quality like? Are the bearings stamped with the manufacturer's code? Are the seals OEM equiv.? If the set is no good, what do you use and recommend? Thanks!
"A slipping gear could let your M203 grenade launcher fire when you least expect it. That would make you quite unpopular in what's left of your unit." - US Army manual of preventive maintenance.
- porndoguk
- Site Supporter
- Posts: 3293
- Joined: Wed Jun 16, 2010 11:17 pm
- Bike owned: NC30
- Location: Middle England
- Contact:
Re: Wemoto Swingarm Bearing Set?
STOP
just been and picked 2 of these up this evening, from a guy 4 miles away!
there £2.25 each as oposed to hondas £7.50+VAT EACH bearings
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT
then you need the needle roller that the cheapest place i found was DSS.
just been and picked 2 of these up this evening, from a guy 4 miles away!
there £2.25 each as oposed to hondas £7.50+VAT EACH bearings
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT
then you need the needle roller that the cheapest place i found was DSS.
NC30 & NC23 33BHP Restrictors For Sale
£25 Inc P&P and donation to 400GB PM for more details
http://www.bikerstraining.com
Like us on Facebook for more information - First Bike on Scene - Emergency Response Skills - UK
£25 Inc P&P and donation to 400GB PM for more details
http://www.bikerstraining.com
Like us on Facebook for more information - First Bike on Scene - Emergency Response Skills - UK
- tanto
- Site Supporter
- Posts: 218
- Joined: Sat Oct 09, 2010 1:15 am
- Bike owned: NC30, Raleigh Chopper
- Location: Back in the UK.
Re: Wemoto Swingarm Bearing Set?
Good find!porndoguk wrote:STOP
just been and picked 2 of these up this evening, from a guy 4 miles away!
there £2.25 each as oposed to hondas £7.50+VAT EACH bearings
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT


Following the bearing spec. above, I notice BearingBoys.co.uk sell a 61904-2RS Sealed Ball Bearing (6904-2RS) which includes a double seal. Would it be worth using that bearing for extra durability? I may have to re-use the original right dust seal.
http://www.bearingboys.co.uk/bearingsea ... =&x=14&y=7
[/quote]porndoguk wrote: then you need the needle roller that the cheapest place i found was DSS.
Would you happen to have a size/specification for this needle roller bearing? I want to see if SKF in Bangkok sell it.
"A slipping gear could let your M203 grenade launcher fire when you least expect it. That would make you quite unpopular in what's left of your unit." - US Army manual of preventive maintenance.
- porndoguk
- Site Supporter
- Posts: 3293
- Joined: Wed Jun 16, 2010 11:17 pm
- Bike owned: NC30
- Location: Middle England
- Contact:
Re: Wemoto Swingarm Bearing Set?
i do 
28x36x3
rick oliver does them for £13
and also does the seals,
1 x 91214-MR7-003 - Dust seal 26x37x5 £3.50
1 x 91202-MR7-003 - Dust seal 28x37x4 £3.50
Needle Bearing for Swingarm
1 x 91071-MR7-003 - Needle bearing 28x36x30 £13.00

28x36x3
rick oliver does them for £13
and also does the seals,
1 x 91214-MR7-003 - Dust seal 26x37x5 £3.50
1 x 91202-MR7-003 - Dust seal 28x37x4 £3.50
Needle Bearing for Swingarm
1 x 91071-MR7-003 - Needle bearing 28x36x30 £13.00
NC30 & NC23 33BHP Restrictors For Sale
£25 Inc P&P and donation to 400GB PM for more details
http://www.bikerstraining.com
Like us on Facebook for more information - First Bike on Scene - Emergency Response Skills - UK
£25 Inc P&P and donation to 400GB PM for more details
http://www.bikerstraining.com
Like us on Facebook for more information - First Bike on Scene - Emergency Response Skills - UK
- tanto
- Site Supporter
- Posts: 218
- Joined: Sat Oct 09, 2010 1:15 am
- Bike owned: NC30, Raleigh Chopper
- Location: Back in the UK.
Re: Wemoto Swingarm Bearing Set?
Isn't this the Honda code for the bearing holder, right needle bearing?porndoguk wrote:i do
...
Needle Bearing for Swingarm
1 x 91071-MR7-003 - Needle bearing 28x36x30 £13.00
The needle bearing I'm trying to find is the one on the swingarm pivot bolt, aka "left pivot needle bearing". Or is it that both bearings are the same (each used at each end of the swingarm, one in the bearing holder (chain adjuster), one on the pivot (pages 13-6 & 13-9 in the Service Manual)?

Just to confuse matters, my notes say the bearing holder's right needle bearing is 28x37x30 (SKF NK28/30TN), while the swingarm pivot's left pivot needle bearing is 28x36x30.
Head-failure!

"A slipping gear could let your M203 grenade launcher fire when you least expect it. That would make you quite unpopular in what's left of your unit." - US Army manual of preventive maintenance.
- porndoguk
- Site Supporter
- Posts: 3293
- Joined: Wed Jun 16, 2010 11:17 pm
- Bike owned: NC30
- Location: Middle England
- Contact:
Re: Wemoto Swingarm Bearing Set?
on the swingarm there are 2 BALL BEARING TYPE as listed above for £2.25 each
and the other side of the swing arm is the NEEDLE TYPE that dss and rick oliver stock.
so in total the swingarm has 3 bearings in total. with the needle roller being the hard to get and expensive one.
and the other side of the swing arm is the NEEDLE TYPE that dss and rick oliver stock.
so in total the swingarm has 3 bearings in total. with the needle roller being the hard to get and expensive one.
NC30 & NC23 33BHP Restrictors For Sale
£25 Inc P&P and donation to 400GB PM for more details
http://www.bikerstraining.com
Like us on Facebook for more information - First Bike on Scene - Emergency Response Skills - UK
£25 Inc P&P and donation to 400GB PM for more details
http://www.bikerstraining.com
Like us on Facebook for more information - First Bike on Scene - Emergency Response Skills - UK
- tanto
- Site Supporter
- Posts: 218
- Joined: Sat Oct 09, 2010 1:15 am
- Bike owned: NC30, Raleigh Chopper
- Location: Back in the UK.
Re: Wemoto Swingarm Bearing Set?
I got that, the bit that's confusing me is whether there are two needle bearings used "in conjunction" with the swingarm. One needle bearing is used as you describe above, and there's another needle bearing used at the other end of the swingarm. The question is, are they the same?
The specs I've come across say that the bearing holder's right needle bearing is 28x37x30, while the swingarm pivot's left pivot needle bearing is 28x36x30. I'm double-checking as it wouldn't be unusual to find that both bearings are, in fact, identical (and that I've picked up a wrong dimension from somewhere).
The specs I've come across say that the bearing holder's right needle bearing is 28x37x30, while the swingarm pivot's left pivot needle bearing is 28x36x30. I'm double-checking as it wouldn't be unusual to find that both bearings are, in fact, identical (and that I've picked up a wrong dimension from somewhere).

"A slipping gear could let your M203 grenade launcher fire when you least expect it. That would make you quite unpopular in what's left of your unit." - US Army manual of preventive maintenance.
- tanto
- Site Supporter
- Posts: 218
- Joined: Sat Oct 09, 2010 1:15 am
- Bike owned: NC30, Raleigh Chopper
- Location: Back in the UK.
Re: Wemoto Swingarm Bearing Set?
Okay, I'm an idiot! Thanks to http://www.akhara.com/nc30/nc30parts/ the fog of ignorance has lifted. The needle bearings I have been struggling to identify are:
Part No. 29, Honda part code: 91062-MR7-003 "Rear axle needle bearing" from http://www.akhara.com/nc30/nc30parts/files/32.htm
The other needle bearing, the one accurately described by porndoguk, is:
Part No. 19, Honda code: 91071-MR7-003 Needle bearing - from http://www.akhara.com/nc30/nc30parts/files/40.htm
To make amends for my sins, here's the least expensive source I could find for 91062-MR7-003, BRG,NDL.50X62X25,
http://www.bearingboys.co.uk/NK50_25_Ne ... ngs-5941-p
£29.00 at David Silver's, £13.39 at Bearing Boys.
FYI, BearingBoys 91071-MR7-003 (BRG,NDL.28X37X30) is £9.50 at David Silver's, £9.22 at Bearing Boys. (http://www.bearingboys.co.uk/NK28_30_Ne ... ngs-5919-p)
Part No. 29, Honda part code: 91062-MR7-003 "Rear axle needle bearing" from http://www.akhara.com/nc30/nc30parts/files/32.htm
The other needle bearing, the one accurately described by porndoguk, is:
Part No. 19, Honda code: 91071-MR7-003 Needle bearing - from http://www.akhara.com/nc30/nc30parts/files/40.htm


To make amends for my sins, here's the least expensive source I could find for 91062-MR7-003, BRG,NDL.50X62X25,
http://www.bearingboys.co.uk/NK50_25_Ne ... ngs-5941-p
£29.00 at David Silver's, £13.39 at Bearing Boys.
FYI, BearingBoys 91071-MR7-003 (BRG,NDL.28X37X30) is £9.50 at David Silver's, £9.22 at Bearing Boys. (http://www.bearingboys.co.uk/NK28_30_Ne ... ngs-5919-p)
"A slipping gear could let your M203 grenade launcher fire when you least expect it. That would make you quite unpopular in what's left of your unit." - US Army manual of preventive maintenance.