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World's largest boring bar

A milestone has been achieved when setting a new world record. The world's largest reinforced anti-vibration boring bar was manufactured by Sandvik and mounted inside a 20-meter (66-foot) lathe.

The project is a collaboration with Spain-based Gurutzpe, one of the largest
manufacturers of heavy horizontal lathes in Europe. The cooperation also extends to the design of the clamp for the machine. The end customer is a Saudi Arabian company. The anti-vibration boring bar has the capacity for a maximum length of 4.2 meters or 165 inches, which is about 14 times the bar's diameter of 12 inches.

Biggest challenge

Being able to machine lengths of up to four meters without having problems with vibrations and at the same time maintaining good surface quality.

Production time

Four months. Total project time was eight months from order to delivery.

Main dimensions

Length: 240 inches
Capacity of the bore: 165 inches
Overhang: 14 times the diameter
Diameter: 12 inches