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My Chrestien has ball bearings :)


JohnBarlow
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Very rare 1954 scope by Chrestien. Been sitting in a shed in France for 40 years and normally the grease gets solid like toffee, but with this one the grease has actually crystalised, wow!

 

Anyway its undergoing a careful teardown for a lube and I found a ball race....

 

Looking forward to the super smooth focussing when its back to spec

 

8528983602_a4e4302092_b.jpg

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Hello,

I happen to have the same lens but without the steel balls. Would it be possible to know the diameter and number of balls

to try to fix my lens?

Does all the balls are placed around the thread ring with some grease?

Hope you get this message…

 

thanks

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On 16/02/2018 at 9:54 PM, docunagi said:

Hello,

I happen to have the same lens but without the steel balls. Would it be possible to know the diameter and number of balls

to try to fix my lens?

Does all the balls are placed around the thread ring with some grease?

Hope you get this message…

 

thanks

Hi, I have exactly the same hypergonar. I remembered I had one steel ball left when I finished servicing mine. I am not too eager to dismantle it again so I can only give you the diameter. It's 3mm. You can get a few dozens of them, having spare ones won't harm you :) 

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