Kitamura’s Mytrunnion-5G: Solution for complex machining applications

Kitamura Machinery has introduced the Mytrunnion-5G 5-axis vertical machining center (VMC), further expanding its Mytrunnion 5-axis line-up. The Mytrunnion-5G has been mechanically and electronically designed specifically for speed, rigidity and flexibility in complex 5-axis machining.

Features include an induction hardened solid box way construction offers the vibration damping properties necessary for fine surface finishes.

The A-axis fully integrated trunnion table (-120 to +30°) is driven by a high-precision worm wheel and shaft for enhanced stiffness and stability. A standard 20~20 000rpm #40, 4-step gear-driven dual-contact spindle delivers strong low-end torque and high-end fine finish capability for enhanced machining flexibility. The 20 HP/AC spindle motor offers maximum cutting torque. An efficient oil chiller system minimises thermal displacement and maximises spindle life to achieve high-speed, high-accuracy 5-axis machining.

The dynamic double column construction allows the Y-axis to be fully supported throughout its entire movement, full stroke and the rigidity of Kitamura’s patented triangular cross rail driven by twin fine pitch ballscrews is engineered to evenly distribute headstock weight and cutting forces for chatter-free machining and enhanced accuracy and surface finish.

The Mytrunnion-5G offers an extra-large work envelope of 630mm by 500mm high and a table load capacity of 400kg with a sliding ceiling cover for easier load and unload of medium to larger size parts.

A standard, feature-rich high precision package includes positioning accuracies of ±0.001mm/full stroke and repeatability of ±0.0005mm, a built-in, rigid trunnion-style tilting table, ballscrew cooling, Heidenhein linear and rotary scale feedback in X, Y, Z, 4th and 5th axes and Kitamura’s IAC System 1 thermal compensation system to control the effects of heat displacement to help ensure continuous accuracy in machining.

The Mytrunnion-5G has a standard 50-tool high speed ATC with an optional 100T upgrade available as a field installed option.

“A standard double decker style chip conveyor and filtration system, 220 PSI coolant through the spindle and base wash and overhead wash shower coolant offer high-end excellence in chip evacuation filtration to 100 microns,” said a company spokesperson.

Ideal for 5-axis machining, Kitamura’s Arumatik-Mi Control offers 1 680 block look-ahead and fast, smooth processing speeds of 2 800 blocks/sec. for faster machining of more complex workpieces. A completely customisable icon-driven touchscreen offers a user-friendly expandable control environment for the operator. Standard features such as remote monitoring screens, on-demand “HELP” guidance, visual work setting, tool breakage detection, free software upgrades throughout the life of the control, and collision safety functions all work in tandem to monitor machine performance and help ensure uptime.

For further details contact WD Hearn Machine Tools on TEL: 021 5345351 or visit