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Edward Lowton
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Competitive edge
17 September 2015
Traditionally, solid bar is the material of choice when it comes to machining components. However, when a central bore is being machined Sandvik argues that by selecting near-net-shape, machine optimised hollow bar machine shops could significantly increase output.

"The advanced machinability of Sanmac hollow bar means increased cutting speeds and feed rates are achievable. Because the dimensional stability and material consistency from batch to batch is identical no adjustment is required to be made so machine settings remain the same reducing set-up and processing time,” explains Christer Thorsson, Sandvik global product manager, hollow bar.
"When compared to solid bar, hollow bar helps to reduce set-up time, machine cycle times, drilling chips, tooling costs, lubricant usage, electricity consumption and freight costs, offering users an operational advantage.”
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