Roller life - Specifically Soft duro type

[Cornishpastythighs]

Finzer Roller

Capabilities
Over 500 Custom Rubber Compounds
Poly-Urethane Compounds
5 Durometer Shore A up to 70 Shore D

[mazengh]

Ryno rollers website does not display any specific roller specs. And Technoroll states a shore of 25...

TRUST LAMBDA | PRINTING ROLLER | PRODUCTS / PRINTING | TECHNO ROLL CO.,LTD
Ryno Rollers Inc Advanced Roller Compounds for the Printing Industry

Also nothing stated in regards to the crown.

[Cornishpastythighs]

Those statements were copy/paste from their websites, not sure where you are getting your information from but clearly those two companys claim to supply dampening rollers with a durometer of 20. Contact them if you are not sure or feel they are miss representing themselves. Good luck

[Cornishpastythighs]

PRINTING ROLLER | PRODUCTS / PRINTING | TECHNO ROLL CO.,LTD

[Cornishpastythighs]

Graphic Roller Industries

[mazengh]

Contacted both will update as I get responses.

[Cornishpastythighs]

The rollers with the Duros of 20 are usually Polyurethane or composite rollers. They are not made in the usual Rubber Vulcinization process (Heat/Pressure). They are liquid and poured into a mould. Dont thnk you can get them crowned but not sure. I have used the Ryno and it was without doubt the best metering roller I ever used.

[mazengh]

The rollers with the Duros of 20 are usually Polyurethane or composite rollers. They are not made in the usual Rubber Vulcinization process (Heat/Pressure). They are liquid and poured into a mould. Dont thnk you can get them crowned but not sure. I have used the Ryno and it was without doubt the best metering roller I ever used.

Was the ryno you used with no crown? What was the durometer? Where you running ipa free?
Some one from a roller company mentioned that it will be impossible to run metallics with no crown

[Cornishpastythighs]

Ran with no crown, IPA free over a 12 year period using Radiation curable inks with extremely small water window. Ran loads of Metalilics with no crown I guess it could depend on the type of dampening system the press is equipped with and the fountain solution chemistry.
Running metallics can be challenging but as long as you check all your basic settings and carry as little water as possible it works.

[mazengh]

I am guessing you were running a low shore durometer roller. With a new ryno and correct roller adjustments what water levels have you seen?