Zeiss Condenser Wheel Bearing

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Charles
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Joined: Mon Mar 02, 2015 11:55 pm

Zeiss Condenser Wheel Bearing

#1 Post by Charles » Wed Jul 01, 2015 10:43 pm

Glen, Here is a Zeiss condenser with the back open showing the ball bearing which goes on the 'wheel' post (circled in red on the left) and which fits into the groove on the other side (also circled in red on the right). The bearing needs to sit on the post which also has a small spring, and when putting the two front and back pieces back together, try to ensure the bearing on the post fits into the 'grooves. The 'grooves' are positive stops for each of the different positions. As you turn the condenser, the ball depresses into the post and then the spring pops the bearing back out when the next groove is reached. Turning the round knurled adjusting wheel in the front moves the bearing and post side to side for alignment of the prisms or phase rings.

Sorry the pictures are a bit unfocused but you can see what needs to be done.
First picture with the bearing between the two halves:
Bearing Between two halves
Bearing Between two halves
Condenser Bearing.jpg (45.74 KiB) Viewed 2526 times
Next, the bearing is on the spring loaded post and shows the groove which it needs to connect with:
Bearing on Post
Bearing on Post
Condenser Bearing on Post and Groove.jpg (45.55 KiB) Viewed 2526 times

Charles
Posts: 1282
Joined: Mon Mar 02, 2015 11:55 pm

Re: Zeiss Condenser Wheel Bearing

#2 Post by Charles » Wed Jul 01, 2015 11:13 pm

The condenser lens assembly may need to be removed. There are four screws holding it in place.
Condenser Lens assembly
Condenser Lens assembly
Condenser Lens Assembly.jpg (45.28 KiB) Viewed 2516 times

Charles
Posts: 1282
Joined: Mon Mar 02, 2015 11:55 pm

Re: Zeiss Condenser Wheel Bearing

#3 Post by Charles » Wed Jul 01, 2015 11:32 pm

If the lens assembly doesn't slide off easily, you will need to remove the two screws which holds the upper and lower lens assembly together, or remove the top cover. If you remove the top cover, the outside condenser ring will slide off. No big thing but you will need to replace the ring ensuring all the iris lens adjustment levers are in the proper place.

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75RR
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Re: Zeiss Condenser Wheel Bearing

#4 Post by 75RR » Thu Jul 02, 2015 3:24 am

All done. Thank you very much.

Now have a working Achromatic - aplanatic phase interference contrast condenser :) :)
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

Charles
Posts: 1282
Joined: Mon Mar 02, 2015 11:55 pm

Re: Zeiss Condenser Wheel Bearing

#5 Post by Charles » Thu Jul 02, 2015 10:41 am

Great! Not really hard once you open the thing up and see how it works. :)

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