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Which needle bearing??

rockdoctor

rockdoctor

Joined Aug 2007
336 Posts | 0+
Farnborough, Hampshire
Hello all
I'm confused, I need to get some needle bearings for the rear linkage, the Aprilia part number is AP8110065 but it seems like they are out of stock at most places, so after a little search on the forum I noticed some people have used simplybearings for these before, which is cool so I had a look at their website but am confused as to which one of their bearings matches the aprilia ones.
Does anyone know what the dimensions etc. are for these bearings?
Also need to get the seals, aprilia part number AP8110068, but once again these are out of stock! Does anyone know of any equivalents?

Thanks
 
The bearing Aprilia use is patented to them and cannot be sold by anyone else. (Officially)

The simplybearings version is caged which will fit but won't last anywhere near as long as it has half the needles.

How many do you need. ?
 
Agreed with Spoonz, the Simply Bearings ones if used as they come won't last 5 minutes.

I've ordered 4 of the cheap caged bearings at a cost of £10 and I'm going to rip out the inner cages and add in additional needles to make them in to OE bearings.

I'm pretty sure it will work as long as you're careful not to damage the needles or the outer casing.

Sorry mate forgot about the seals, these fit just fine. Click Me
 
Last edited:
Cheers for that.
I need 6 of them, they're actually for my Falco, took the shock off and found that all the bearings are shagged :(
 
I've ordered these bearings to get me out of the **** - Click Me

Ultimate Parts are crap for communication with its customers and don't appear to hold much in stock, my advice is to stay away from them.
 
Cool thanks for that.
I know what you mean about ultimate parts, when I spoke to them, the guy took offence when I said I would call round some other places!
 
rockdoctor said:
Cool thanks for that.
I know what you mean about ultimate parts, when I spoke to them, the guy took offence when I said I would call round some other places!
Click to expand...

Yeah, the person I spoke to was struggling to couple together a half descent sentence.

More of a grunt and a mumble than a nice crisp clear communication.

Had to laugh though as he repeated everything I said twice immediately after I said it. It was like talking to yourself in a **** off big cave.
 
Strange that, because I got a full set of bearings and seals in 5 days delivered. They sent me an email to tell me when they would be delivered also.
 
amb67 said:
Yeah, the person I spoke to was struggling to couple together a half descent sentence.

More of a grunt and a mumble than a nice crisp clear communication.

Had to laugh though as he repeated everything I said twice immediately after I said it. It was like talking to yourself in a **** off big cave.
Click to expand...

:lol:lol I feel like that at work sometimes!
 
1066RSV said:
:lol:lol I feel like that at work sometimes!
Click to expand...

What they make you work in a **** off big cave? LOL

Or was you referring to the mumble and grunt bit?

That's just my luck, Danf1234 got the last lot of bearings. Bugger
 
amb67 said:
What they make you work in a **** off big cave? LOL

Or was you referring to the mumble and grunt bit?

That's just my luck, Danf1234 got the last lot of bearings. Bugger
Click to expand...

Apprently I did LOL. Got the last of the seals as well!!!
 
bearings

has anyone got a photo of the aprilia bearing, new before install and dimensions if possible ?

thanks

johnr
 
OK, my bearings have arrived today from Bearing King. (That's the HK1812)

The needle rollers are not full length and therefore you can't remove the inner cage and *******ise as I had intended.

Think I'm going to have to do a bit of digging around on the net and work out if these will cope with the weight of my bike.

Will post again once I have determined if they are suitable for the job, if not then it's only a few quid wasted. Will sell them on Ebay.
 
OK Update on those standard HK1812 bearings.

Found this on the net:

Drawn cup needle roller bearings with open ends and with closed end are units comprising thin-walled drawn outer rings and needle roller and cage assemblies. Drawn cup need roller bearings with open ends are also available in full complement versions. The majority of the bearings are single row designs. Drawn cup needle roller bearings with open ends and with closed end are available in open and sealed versions. Due to the thin-walled outer drawn cup and the absence of an inner ring, drawn cup needle roller bearings with open ends and with close end have an extremely low radial section height. They have very high load carrying capacity, are suitable for high speeds and can be easily fitted. If shoulders, snap rings etc. are not used for axial location, the housing bore can be produced easily and particularly economically.

Also see the attached document that gives load specs for the HK1812 bearings.

So it appears they will be fine.

Bargain at that price.
 

Attachments

  • HK1812 Bearings Specs.doc
    394 KB
amb67 said:
OK Update on those standard HK1812 bearings.

Found this on the net:

Drawn cup needle roller bearings with open ends and with closed end are units comprising thin-walled drawn outer rings and needle roller and cage assemblies. Drawn cup need roller bearings with open ends are also available in full complement versions. The majority of the bearings are single row designs. Drawn cup needle roller bearings with open ends and with closed end are available in open and sealed versions. Due to the thin-walled outer drawn cup and the absence of an inner ring, drawn cup needle roller bearings with open ends and with close end have an extremely low radial section height. They have very high load carrying capacity, are suitable for high speeds and can be easily fitted. If shoulders, snap rings etc. are not used for axial location, the housing bore can be produced easily and particularly economically.

Also see the attached document that gives load specs for the HK1812 bearings.

So it appears they will be fine.

Bargain at that price.
Click to expand...


My concern would be that these needles are fewer in number than OE spec bearings, so you would have less needles to spread the load. You would put excess pressure on those "fewer" needles and their life span would be greatly reduced :dunno Is it worth saving a few quid and having to strip down to replace them again in the not too distant future. How much are OE bearings anyway :dunno
 
sprocker said:
My concern would be that these needles are fewer in number than OE spec bearings, so you would have less needles to spread the load. You would put excess pressure on those "fewer" needles and their life span would be greatly reduced :dunno Is it worth saving a few quid and having to strip down to replace them again in the not too distant future. How much are OE bearings anyway :dunno
Click to expand...

Hi Sprocker,

I understand what you are saying but to be honest it takes less than an hour to change these bearings and according to those bearing specs I found they are more than man enough for the job.

I've bought a length of threaded bar around 8mm thread and around 203mm long and added a few strong large pan washers, I then use that with a few plain nuts to either extract or draw in the bearings.

Perhaps the original bearings Aprilia fitted are over engineered, after all they only fail due to water ingress never heard of any collapsing due to excess loading. I am an engineer by trade and would conclude that the alloy side plates and dogbone bearing bore walls would distort or fail before the bearing reached critical loading and ultimate failure.

The problem with the Aprilia bearings is supply, I've had a set on order from Ultimateparts for a month now and still no ETA on them. (If this was summer time I would be screaming)

I'm going to fit them and I'm sure you'll hear if I have any issues.

PS. Four bearings and six seals cost me less than £20 delivered, bargain.

:doug
 
I believe Aprilia did use the caged bearing very very early on but found it had accellerated wear and the cage would distort from the twisting action of the linkage.

Whilst i don't think anything sinister will happen in the short term i would be tempted to reduce the maintenance schedule on them to make sure they are not falling apart or something.
 
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