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#Post#: 13851--------------------------------------------------
rear axle bearings gemini
By: Mike Date: September 19, 2025, 8:33 am
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trying to figure out the best axle bearing for my 25mm 1020mm
solid rear axle.
as far as i can see the option is flanged vs pillow block.
there are quite a few options for rear axle bearings however on
gemini. any assistance or guidance of what to opt for would be
appreciated.
axle bearing:
25mm or 30mm Axle Bearing & 3 hole plates.( 2 hole plate option
)
A 25mm & 30mm Eccentric Cam bearing are available, the collar
helps lock the bearing in place.
2 bolt hole Cast Flanged bearing with 98mm C to C holes
2 Bolt hole Pressed steel clamp bearing 85mm C to C holes.
pillow block:
25mm
thanks as always
#Post#: 13852--------------------------------------------------
Re: rear axle bearings gemini
By: Jimr1999 Date: September 19, 2025, 10:15 am
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You will probably either design your chassis so the axle passes
through the chassis stile, in which case the 2 or 3 hole plate
bearing mounts could work, or you will design it so the chassis
is under or overslung to the axle in which case pillow blocks do
the trick, the eccentric cam "bearing" refers to the type of
locking collar that gemini sells and a data sheet for
instalation can be found here...
HTML https://www.geminikarts.co.uk/wp-content/uploads/2019/03/Eccentric_Locking_Collar.png
As your axle is 25mm, the 25mm ones are what you need.
Hope this helps Mike
#Post#: 13855--------------------------------------------------
Re: rear axle bearings gemini
By: Mike Date: September 19, 2025, 11:24 am
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diagrams are great thanks
the 25 mm Pressed steel clamp bearing 2 hole upright 85 mm c to
c holes look very similar to pillow block bearings. and do i
need the plates and the bearings
#Post#: 13858--------------------------------------------------
Re: rear axle bearings gemini
By: Jimr1999 Date: September 19, 2025, 12:33 pm
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Have a look at Marks page for bearings, his images of them are a
bit better than the ones on Gemini... Products - Cyclekart
Workshop
HTML https://share.goo
gle/rRklZAqmBbtfAiQFT
#Post#: 13859--------------------------------------------------
Re: rear axle bearings gemini
By: Mike Date: September 19, 2025, 6:21 pm
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thanks for your patience jim. i've had a look - i may just go
with marks page for the bearings as it's a little clearer.
i don't suppose you have the measurements for the axle bearings
so i can check it'll fit my ladder chassis
#Post#: 13861--------------------------------------------------
Re: rear axle bearings gemini
By: Jimr1999 Date: September 20, 2025, 1:04 am
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The housing units are usually PFL205 ones the tech details can
be found here...
HTML https://simplybearings.co.uk/shop/p22830/PFL205-1-Set-of-Oval-2-Bolt-Pressed-Steel-Bearing-Housing-for-205-inserts/product_info.html
JimR
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