How is the ink fountain roller on a Heidelberg SM 52 press driven?

[Deleted member 16349]

How is the ink fountain roller driven on the Heidelberg SM 52 press?

Is it with a motor or a ratchet?

Looking at one in a video, it seemed that it did not turn continuously.

Just curious.

Thanks.

 

[aqazi81]

Its motorized.View attachment SM52 Ink Fountain Roller.pdf

 

[Deleted member 16349]

Are you looking at a GTO or an SM52? One way to be sure if it's a ratchet or not is if there's a handle sticking up next to the fountain. If there is, it's a ratchet. If not, it's motorized.

I think it was the SM52 version. I do not remember seeing a handle. I thought I saw the ink fountain roller turn in steps but now I am not sure. I might have mixed up the different video views and frankly don't remember how to find that video again. Duh.

If it was motorized, I thought it would be strange for it to move in steps. move then stop then move again.

No real problem, just curious.

 

[Ret Heidelberg Instructor]

Ret Heidelberg Instructor

Ret Heidelberg Instructor

I think it was the SM52 version. I do not remember seeing a handle. I thought I saw the ink fountain roller turn in steps but now I am not sure. I might have mixed up the different video views and frankly don't remember how to find that video again. Duh.

If it was motorized, I thought it would be strange for it to move in steps. move then stop then move again.

No real problem, just curious.

Erik, The SM 52 and SM74 were motor driven. The operator could shut off the motor at the console. However if memory serves me, if the ink fountain roller was selected on, then the ink fountain roller would continue to turn at a reduced speed. If the press was stopped via the feeder being shut down after printing or via slow down mode while idling, the ink fountain kept turning slowly. An Emergency stop would halt the rotation. On re-start the fountain roller would once again start turning at a slow speed and would speed up to the percentage level selected by the operator when printing would start. Some operator's would de-select the ink fountain roller from turning in order not to wear down the ink mylar ink foil unnecessarily. There was no handle to turn the roller manually.