Tighter tolerances translate into less vibration, fewer jams, and increased performance consistency all important aspects of any manufacturing process.

How the Right Rollers Ensure a Better End Product
How the Right Rollers Ensure a Better End Product

Sven Krause | Meridian Laboratory

Having worked with raw base polymer manufacturers for more than 55 years, Meridian Laboratory has developed custom polyurethane ML6 blends, which are used in the manufacture of a roller that meets the design needs of many industries.  Here are just a few reasons how precision ML6 polyurethane rollers by Meridian Laboratory are better than conventional polyurethane rollers and polyurethane wheels.



Meridian Laboratory’s precision molded polyurethane ML6 rollers supply the benefits of a polyurethane product without sacrificing strict design tolerances. Tighter tolerances translate into less vibration, fewer jams, and increased performance consistency all important aspects of any manufacturing process.

Unlike typical polyurethane rollers which are abrasion ground to size and dimension, ML6 rollers are tighter in tolerance across all dimensions including diameter, width, bore and especially TIR (total indicated runout), which increases a machine’s ability to consistently perform at optimum speed and orientation.



Polyurethane rollers with better friction make the application of optimal pressure or friction possible. This translates into the manufacture of a product with fewer defects and deformation because the product moves through the machine without any unnecessary stress and strain, especially important for fragile materials such as glass, paper, corrugated cardboard, and plastic films.

New ML6 roller (left), used ML6 roller with 10M cycles and still functioning (center), conventional ground polyurethane roller and unusable after 1M cycles (right)



Due to the precise tolerances of molded polyurethane ML6 rollers, further processing is not required to meet tolerance specifications. This enables the outer “skin” or bond created in the casting of the roller to remain intact. A roller that has not been ground to tolerance means a better performing roller:

  • No open pores to allow leaching of substrates into the roller
  • Roller surface integrity slows down chemical soaking and leaching
  • An intact “skin” causes substrates to sit on the outer surface of the roller; ML6 rollers can be easily wiped clean with any type of white solvent returning them to “good as new”
  • The smooth surface finish prevents the rollers from damaging, marking or marring product and parts they come into contact with
  • Better friction
  • Longer durability, less wear

Cast Polyurethane Rollers

Meridian Laboratory ML6 rollers (left) next to conventional ground polyurethane rollers (right)



More than 55 years of continuing improvements have perfected Meridian Laboratory’s proprietary ML6 polyurethane blends, making it the ideal choice for industrial production and manufacturing applications. These custom blended and formulated polyurethanes:

  • Provides for maximum abrasion resistance and resilience
  • Has minimized plastic deformation
  • Has lowered rolling resistance

polyurethane roller wear, polyurethane breakdown, polyurethane drive roller

ML6 Polyurethane remains stable and consistent over time, while other polyurethanes break down and lose their shape.



All these factors combined translate into a better polyurethane product that is consistent and accurate in manufacturing and production processes, which in turn provides:

  • A more uniform and consistent end product
  • Less maintenance and downtime
  • More profit


The content & opinions in this article are the author’s and do not necessarily represent the views of ManufacturingTomorrow

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