SM 52 the meaning of numbers

Dear colleagues,

I need a piece of information related to the Sm 52.

I need a detailed description of what exactly does the white and red numbers.
I know that are associated with the ink distribution, but I need table of what to expect from that position.

THNX

 

You need to experiment with these numbers because there are no standard values for this. It depends on the coverage of the job.
AFAIK Red numbers reverse the ink distribution and ink vibrator rollers start their movement from the opposite side.

 

Thank you for your answer but I still do not understand the principle of how it works.
Because if I understand one section my German manual that is poorly written says if set to 1 white to the printing of the maximum size sheet with maximum coverage.. If we put the 2 white then it is enough to print A3 size with full coverage of the sheet. Does this mean that the white numbers are related to the sheet format in the press? So if I go with this logic white numbers for even distribution of ink , depending on the size of the sheet. But I still do not understand meaning of red numbers and they affect to the distribution of ink.Which of them are for Operator Side and Gear Side.

 

if your printing ok leave them alone

 

Yes, but I'm trying to get to know the machine better in order to provide maximum performance when I printing.

 

As Aqazi said they are for ink coverage. So you can change from one number to another according to job you are printing you can increase or decrease ink vertically I mean from the gripper bit to the tail edge but I advice you not to do that if you did not get nenough experience.

 

white is operator side, red is drive side! this is something you "DO NOT TAMPER" with if you don't have experience. you will end up with heavy printing horizontally on the sheet.

 

These numbers are a hit or miss proposition. By moving the timing of ink distribution on the scale, you will be able to shift the charge of the ink on that unit, either towards the gripper or towards the tail. For example.... You have 3 up of the same image stacked behind each other going from gripper to tail. Lets say that the gripper image is showing more magenta compared to the 2 other images behind it. Moving this will allow a more even distribution of the magenta ink charge from front to back. The scale is a subjective thing, that you really can't nail down a formula to. This adjustment ALSO allows you to set the amount of lateral distribution the vibrator rollers see. Ive found the gripper to tail adjustment come in handy on certain jobs where a critical color match is essential, but would advise that you try to avoid creating a monster, by letting everyone know its available. If you keep things in the middle of adjustment, you should have distribution suitable for all but the fussiest jobs. If you let everyone know that this adjustment is available, you will turn a quick makeready into a longer makeready, and wind up using more paper.
On a small format press like the 52 you should rarely encounter a need to move this setting. On larger format machines more so.

 

Also, be aware that if you stop the side to side oscillation you will burn up the bearings for the oscillator rollers. They have to move side to side...

 

? SM52 has bearings in frame rather than bushings? And no oil line feed?

 

The SM52 has oscillator bushings not bearings and there definitely has an oil line feeding each bushing. I have never heard of any oscillator bushing that will burn up of not moving from side to side. In fact I thought the new machines which also use bushings have a function that turns off the oscillation when the press is not in production or the unit is not in use.

 

Thanks for the clarification. Exheid.