Ink Metering (or Micrometric or Feed) rollers for continuous inking systems play a crucial role in determining the flow and transfer of ink through the ink train. Most trains have very short inkers, which require the ink metering roller to ensure a delivery of constant ink flow, regardless of the quantity. This is extremely critical when printing spot colors. Also, with the use of more recycled papers, and lower grade papers, dust travels through the inker and is pushed towards the ink fountain ball roller. Consequently, the ink metering roller is subject to continued physical abrasion, while still being required to provide a consistent & constant flow of ink.