JBB731 Jumbo Bridge Bars
JBB731 Jumbo Bridge Bars are made of high tensile aluminum with steel interfaces, and cover the 654 - 2155 mm (25.75 - 84.843 inch) diameter range. The modular concept of the Jumbo Bridge Bars uses standard BB731 Bridge Bars and boring blocks for excellent flexibility, precision and reliability. The boring blocks are easily clamped and adjusted within the Bridge Bar using a CAM driving mechanism, then the Bridge Bars are clamped within the Jumbo body.
Through-coolant supply of up to 70 bars directly to the cutting edge is available on the BB731 Bridge Bars and JBB731 Jumbo Bridge Bars.