Silverthorne Engineering has established a worldwide reputation for the production of stretch reducing rolls, matching customers’ exact specifications using centrifugal/static casting processes for our cast iron materials.

Through careful combination of the various materials (chilled cast iron, nodular iron, indefinite and grey iron, tool steel and HSS), and by controlling the chemical constituents, we can precisely tailor the hardness, wear resistance and toughness of the finished product.

Our extensive experience covers the design and manufacturer of stretch reducing rolls for round, square, rectangular and elliptical sections, in sizes ranging from 12mm diameter to 500 x 250mm elliptical. We are able to offer advice and design options should a bespoke product be required.

We employ the very latest CNC machinery to ensure that both large and small batches can be produced efficiently and economically.

We are fully committed to providing products and services to the highest standards and are continuously testing new material grades to help our customers further improve the quality of their rolls.

Material Specifications

  • Bar Types Round, Square & Rectangular
  • Diameter From 12mm to 500mm x 250mm elliptical