Leica S30-90mm broken plastic AF focusing gear

[Einst_Stein]

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Those third party stuffs are China made. There is no market too small. If you see the S lens adapter, Rollei obsolete lens adapter, etc. you will know. 

However, the technical uncertainty can push back their efforts, particularly if something goes wrong may damage the expensive stuffs. If Leica can provide some guide lines it helps.

Edited September 19 by Einst_Stein

[Stef63]

On 9/18/2025 at 6:53 PM, Stuart Richardson said:

For sure, something is better than nothing. I would find it pretty surprising is Leica chose not to repair these gears any longer, if only because it seems like it would be a part that could very easily be 3d printed or made with a CNC machine. It is not a circuit-board or anything complicated, just a small physical part.

 

Leica told me they cannot repair the AF motor of a 180 anymore due to unavailability of a circuit board.  The problem seems to be that by replacing the AF gear there is a risk they damage a certain circuit board.  This would make the lens unrepairable AND unusable，which is a risk they understandably do not want to take when a customer sends in a non broken lens with the “old” AF gear. 

[Pieter12]

Which gear are we talking about? There is a large ring gear that girds the lens that has been what has failed on my lenses. It does not seem like something that would be easy to manufacture, being thin enough to fit inside the body of the lens yet have the strength to turn the elements for focusing. It has a lot of fine teeth along its circumference.

[Einst_Stein]

The mentioned broken plastic gear has about 10-12 teeth, very thick. The thickness is slightly less than the tip to tip distance between the teeth.   

 However, the plastic gear is sandwitched between two thin metal gears, each metal gear has much finer teeth.

Edited September 20 by Einst_Stein