We are trying to evaluate two printing presses and one has the
cylinders mounted with bronze bushings and the other with tapered
roller bearings.
One manufacturer claims the bushings provide a superior support for the
cylinders and thus provide a better contact between the two cylinders
and a better print. The other claims that the roller bearings are just
as good for support and there is no difference in print quality.

Can you advise which is technically correct and which solution should
provide the greatest reliability over a 10 year span with the presses
operating at speeds of 10 to 17 thousand revolutions per hour. We know
that fundamentally both machines will print.

If someone can take the time to comment on this I will be greatly
appreciative.

Ralph Johnson
LDR International

ralphj@ldr.com