PMS Top mount bearing

[Louis]

After some replacement bearings for the PMS top mounts, but I was just wondering whether anyone knew where to get some of the 'uprated preloaded' bearings from besides direct from PMS?

I've seen the normal standard ones here - http://www.mcgillmotorsport.com/m18-spherical-plain-bearing-gek18t-teflon-lined-704/
and they're soo much cheaper than buying the same from PMS, but I was just wondering whether anyone had a link to others.
What's the actual difference in the two?

Cheers!

 

[Louis]

Anyone got any idea? Don't mind buying direct from PMS, but bearings are bearings.

 

[dann2707]

Anyone got any idea? Don't mind buying direct from PMS, but bearings are bearings.

Measure your id, height and hole size for the top mounts? Or if you come to my parents at the weekend take one of my spares and get it measured.

 

[Louis]

Can't seem to find 'preloaded' ones being sold though. They got another name?

 

[Steven103]

No, ignore that. Having a stupid moment!

 

[Craig211]

Probably a bit late but im having trouble understanding how a spherical bearing can be preloaded?

I was always under the impression that preload was acheived by aligning both bearing races in a certain way
and spherical bearings only have the one "race" as far as i can see.

Im not an engineer by any means but interested in how things work, so correct me if im missing something here

 

[oreA]

I got the McGill bearings for my ktec top mounts, and they've been fine so far (but just one track day). I needed different dimensions to the ones linked above.

Not sure if I've added any value to this thread or whether this will help anyone :smile:.

 

[Chambers_RS]

I brought them from PMS just to be safe and save messing around measuring them.

 

[Louis]

Best bearings for the KTR Top Mounts? There's the GEG20C mcgill ones (http://www.mcgillmotorsport.com/m20-spherical-plain-bearing-geg20c-teflon-lined-705/) or the SKF GEH20C ones (http://www.mcgillmotorsport.com/skf-m20-spherical-plain-bearing-geh20c-1900/).



http://www.mcgillmotorsport.com/m20-spherical-plain-bearing-geg20c-teflon-lined-705/

 

[bozothenutter]

They are a Fluro GLXSW18 or any 18mm spherical bearing with 42mm OD, with outer ring width of 16.5mm.

From when i asked them....these are the normal ones though

 

[Louis]

Ktec ones? The ktec bearings I pressed out were 20x42x25x16

 

[Louis]

According to KTEC the bearings are SKF GEH20C, with a custom PTFE shim and m20 circlip. It's fairly difficult to find SKF bearings cheaper than ktec supply.

Found these - https://budgetbearings.co.uk/shop/p...ain-Bearing-Steel-/-Bronze-/product_info.html

But then have circlips and ptfe washer to purchase.

 

[James363]

The pms uprated top mount bearings are minebea if I remember correct (have ordered them before) I know the rear beam uprated ones are definitely minebea. Preloading a bearing is typically when you have more interference on the outer race to reduce end float, and I think this might be the case as the preloaded bearings seemed to be a bit harder to press in.
Bloody shame I don't still have the packaging from my bearing, I only put it in a month ago, and didn't see the thread until now.

 

[bozothenutter]

sorry, the PURE ones

Ktec ones? The ktec bearings I pressed out were 20x42x25x16

 

[Louis]

The pms uprated top mount bearings are minebea if I remember correct (have ordered them before) I know the rear beam uprated ones are definitely minebea. Preloading a bearing is typically when you have more interference on the outer race to reduce end float, and I think this might be the case as the preloaded bearings seemed to be a bit harder to press in.
Bloody shame I don't still have the packaging from my bearing, I only put it in a month ago, and didn't see the thread until now.

I've got ktec ones now mate. Just ordered some SKF bearings, and i'll laser cut out some washers from PTFE at work.

 

[YorkshireKyle]

Revive ahoy

Whats the specs for the PMS bearings? One of mine is chattering and knocking more than Katie Price's fartbox

 

[Jekyll]

These are direct replacements for the older style ones.

Pardon our interruption...