Suntour NCX seat post spares

[acm2000]

Does anyone know if I can get some spare brass bushes for my seat post? I've tried looking around but haven't had any luck finding any.

 

[Nealh]

I have had the same issue on two I own and tried looking for collared/flanged bushes, though I found sellers I wasn't able to find the correct sizes. In the end I gave one to a machinist/lather engineer brother who made me up a few, I am again down to just 3 spares so look like another favour to ask considering the prices for just 8 bushes.

There is a spares kit on Ebay for £16 odd looks with stainless bushes and pins.
https://www.ebay.co.uk/itm/SR-Suntour-SP12-Suspension-Seatpost-Wear-Kit/302409670669?epid=2165144984&hash=item466905600d:g:u3AAAOSwdB9ZiuFt

 

[LeighPing]

I couldn't find any online. All they seem to have are different weight springs. If it's not fit for purpose anymore, and you need a new suspension seatpost, I recommend you have a look at the bikehut suspension seatpost sold by Halfrauds, if you can find one. They come with 3 springs and a shim included.

 

[anotherkiwi]

Something like this?

https://www.bike-discount.de/en/buy/suntour-sp12-ncx-replacement-bolt-kit-for-suspension-seatpost-537498

Found some: https://www.amazon.co.uk/Replacement-Bolts-SR-Suntour-SP12-NCX/dp/B01DQ8HUGE only 10 left jump on them!

 

[Nealh]

ACM, your pic is typical of mine the front lower bush take most of the force and wears first, though if you don't notice it straight away wear starts on one of the others.

 

[Deleted member 4366]

Search for Oilite bush Glacier bush or DU bush, or substitute bearing for the word bush. Add the word "flanged" if it has a flange. Here's some that I found quickly:

https://www.bearingboys.co.uk/Metric-Flanged-Oilite-Bearings-1256-c
https://www.bearingsrus.co.uk/catalogsearch/result/?q=bronze+bush

 

[acm2000]

I have had the same issue on two I own and tried looking for collared/flanged bushes, though I found sellers I wasn't able to find the correct sizes. In the end I gave one to a machinist/lather engineer brother who made me up a few, I am again down to just 3 spares so look like another favour to ask considering the prices for just 8 bushes.

There is a spares kit on Ebay for £16 odd looks with stainless bushes and pins.
https://www.ebay.co.uk/itm/SR-Suntour-SP12-Suspension-Seatpost-Wear-Kit/302409670669?epid=2165144984&hash=item466905600d:g:u3AAAOSwdB9ZiuFt

Thanks, for £16 should be worth a shot, won't wear as fast as brass either hopefully.

 

[Deleted member 4366]

Thanks, for £16 should be worth a shot, won't wear as fast as brass either hopefully.

No turning marks on the bushes, so most likely sintered bronze and nickel plated or some other bearing material, but not steel.

 

[Nealh]

The oilites are no good too thick.

Suntour bush requirements
Flange 14mm
int dia 6mm
ext dia 8mm
bush length 8mm
Material thickness 1mm.

Nearest I've found are these just need to recheck the dims before ordering, the flange is 2mm smaller but probably doesn't matter too much and the length 1mm short again not too critical.
http://www.wychbearings.co.uk/f0608l10_bush.html

 

[Deleted member 4366]

You're not looking hard enough. I found this one in less than a minute:

https://www.ondrives.com/dub-0608-bb

 

[Deleted member 4366]

This supplier has all sorts of plastic ones in the correct size. Plastic might be better.

https://www.igus.co.uk/iglidur/plain-bearing?sort=3&fc=300718&inch=false&iglpretemp=4+2+3+5+1&mintemperature=-40&maxpressure=15&maxshaftdiam=6&minshaftdiam=6&details=1

 

[Gringo]

New You're not looking hard enough. I found this one in less than a minute:

https://www.ondrives.com/dub-0608-bb

£31 for 8 & that's for something almost but not quit the right size and no pins either.
Even when you find the corect size bushes you'll only save a few quid over the price of a proper kit and you'll still have old pins

 

[Nealh]

The Wychbearings self lubing bush is only 70p a go so will try some of them to se how they go. The original brass ones are to soft.

 

[acm2000]

I have had the same issue on two I own and tried looking for collared/flanged bushes, though I found sellers I wasn't able to find the correct sizes. In the end I gave one to a machinist/lather engineer brother who made me up a few, I am again down to just 3 spares so look like another favour to ask considering the prices for just 8 bushes.

There is a spares kit on Ebay for £16 odd looks with stainless bushes and pins.
https://www.ebay.co.uk/itm/SR-Suntour-SP12-Suspension-Seatpost-Wear-Kit/302409670669?epid=2165144984&hash=item466905600d:g:u3AAAOSwdB9ZiuFt

these turned up today and fit/work a treat! im so glad to have my bouncy commute back!

No turning marks on the bushes, so most likely sintered bronze and nickel plated or some other bearing material, but not steel.

not sure, theyre not magnetic, i tried scratching one as deep as possible and theyre definitely not plated so i guess time will tell how they wear, only replaced the worn ones for now so got plenty of spares.

 

[Paultr]

Hi all

Just dug up this old thread when searching for info on my new NCX seatpost which arrived this morning.
The reason for my search was that when I looked at my post carefully I noticed that the bushings were not brass but some kind of white metal. I had specifically ordered a post with the soft spring to suit my weight. I am aware that there have been three versions of this seatpost and mine is marked 2012 V2.1 so I suspect I have the second version. Naturally I was initially a bit frustrated as it is normal to want the latest version of something but on reading this thread I might just have struck lucky.

So, for those who have the brass bushing version (or any version I suppose) do you think I should keep this one and avoid having to replace the bushings in the future or swop it for the latest version ?

Thanks for any opinions

 

[Deleted member 4366]

The bushes aren't brass. Brass isn't a bearing material. Instead, they're sintered bronze. there's many different materials used, but most likely is an alloy of mainly copper and iron. sintered bronze is porous, so it can be impregnated with oil.

The silver bushes are most likely aluminium bronze.

 

[Paultr]

The bushes aren't brass. Brass isn't a bearing material. Instead, they're sintered bronze. there's many different materials used, but most likely is an alloy of mainly copper and iron. sintered bronze is porous, so it can be impregnated with oil.

The silver bushes are most likely aluminium bronze.

They (Suntour) claim they are brass but that does not surprise me as I am amazed at the poor quality/quantity of the product info that is available at any of the various Suntour websites. I have a pair of their forks and couldn't find out what I wanted to about them and now this mystery of the various seatpost variants .....

Thanks for your reply btw

 

[ehbike]

Hi mine are worn and am looking to get a kit as on Amazon, however please tell me how to replace the bearings - do you need a special press/tool - can I use a vice - hammer???

 

[Nealh]

There are no bearings just pins and bushes, an allen screw keeps the pin in place and the bushes are a tight fit, I drove mine out with a metal driver/dowel near the exact gush outer size. To fit the new ones a bit of lube or marg/spread is super slippy and a sharp whack with a good hammer.

 

[KeithMac]

I fitted the stainless pin and bush kit a few years back, works a treat.