Author Topic: Rather unusual roller bearings  (Read 2530 times)

Teddy

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Rather unusual roller bearings
« on: 09 April, 2014, 09:05:04 pm »
Hi All
The attached pics (I hope) show two roller bearings from a little Pacific 2 cylinder 2 stroke petrol powered fire fighting pump.
Crankshaft  diameter is 7/8", outer diameter of bearing is 1 3/8", roller diameter is 1/4". roller length is 3/8", and the rollers are identical, even though the cages are different.

No name or any ID scribed on the bearings.

Anyone out there familiar with these, and more importantly, where they might be purchased?

Thanks for any replies, in advance

Teddy

Clynton Brown

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Re: Rather unusual roller bearings
« Reply #1 on: 11 April, 2014, 01:00:29 am »
Seen them used in a smart drive washing machine! (Wayyyyyy more modern) but bearings tas sourced the ones we needed altho it was metric
Im 25, I dont want to think of my shed in 25 years..........

Teddy

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Re: Rather unusual roller bearings
« Reply #2 on: 11 April, 2014, 09:01:45 am »
Thanks Clynton, I'll follow up on that lead.
Teddy

m type

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Re: Rather unusual roller bearings
« Reply #3 on: 11 April, 2014, 06:35:36 pm »
hi guys indian and Harleys have them for the big ends and main bearings. I still have some somewhere. cam
Engines Ihc m type 1 1/2, 3, 6, 10hp, famous 4,6,10hp bental's 4hp, 9hp, 4hp Waterloo boy, 2hp fealding and platt, and some others.tractors farmalls f12,3xH's, AM, McCormick 10-20, case c, sex, dex, 15-27 cross motor, 15-25 L rumely, 18-36 hart parr, cletrac ad, tea furgy.

Teddy

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Re: Rather unusual roller bearings
« Reply #4 on: 11 April, 2014, 07:49:56 pm »
Thanks Cam
Are they still a listed spare part, do you know?
Anyway, that's a great breakthrough, thanks heaps.
Teddy

rustyengines

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Re: Rather unusual roller bearings
« Reply #5 on: 11 April, 2014, 10:10:24 pm »
hi Teddy
They are just needle roller bearings
Do they run directly on to the crankshaft?
Outer diameter?
crank 7/8", outer diameter of bearing is 1 3/8", roller diameter is 1/4
Did you measure the OD while the bearing was still on the crank
Is there a outer housing?
The roller length is very short, what width is the whole bearing
I cant find any bearing listed the sizes you have
Have you tried a local bearing supply ? I,m sure they would have one to fit,
Ian   

Southern Cross Engines, Lawn Mowers and old tools * TOWNSVILLE

jopeter

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Re: Rather unusual roller bearings
« Reply #6 on: 31 May, 2014, 10:39:29 am »
As Ian said ....needle bearings ,designed for radial thrust/ load.....sometimes used  for bearings on the wheels of the trolleys for our old engines .

friday

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Re: Rather unusual roller bearings
« Reply #7 on: 06 July, 2018, 09:15:21 am »

the motor sprocket shaft for chief and scout 741 is 7/8 dia .
the crank shaft for scout 741 is 7/8 dia .

cobbadog

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Re: Rather unusual roller bearings
« Reply #8 on: 06 July, 2018, 04:16:30 pm »
I would have thought that almost any bearing shop would either have them or can get them.
Cheers, John & Dee. Coopernook. NSW.

EMU

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Re: Rather unusual roller bearings
« Reply #9 on: 06 July, 2018, 07:17:58 pm »
Cylindrical Roller Bearings are Heavy Duty . Compared to Ball .

friday

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Re: Rather unusual roller bearings
« Reply #10 on: 08 July, 2018, 07:16:17 am »

I know its old thread but 741 indian was plentiful from WW2 theres a good chance the roller cages are army surplus , same dia shaft and i.d race
on ebay.au theres 1/4" roller sets
genuine rollers are available in oversize too ,  .005 increments , thrust washers are out there too