Karl Townsend wrote:

I'm trying to decide how large a roller chain I need...

Does anyone know of a table that shows how much each size roller chain
stretches under increasing loads?

The application is my plasma table. I'm upgrading from cable tension drive
to roller chain.

Karl

Rack and pinion drive is the most common / popular for most plasma
tables. Plenty of sources out there for the components and plenty of
info on CNCZONE.