The microARC 4 works with all Tormach machines, from the PCNC 440 Mill to the 1100 M/MX Mill.  Click image to enlargeTormach Inc.’s microARC 4 allows high-precision 4th axis machining in a compact footprint. 

The microARC 4 works with all Tormach machines, from the PCNC 440 Mill to the 1100 M/MX Mill. 

The device reduces both operator workload and cycle times with a high-quality, low-maintenance harmonic drive which provides extremely precise motion control, coupled with much higher rapid speeds than a worm-drive unit. 

The harmonic drive system results in near-zero backlash. Compared to a similar size worm-drive 4th axis unit, the microARC 4 achieves anywhere from a 400 per cent to 600 per cent reduction in backlash.

No maintenance is required, providing a much lower cost of ownership than an oil-filled worm drive unit, which requires periodic oil changes and top-ups.

Smoother start and stop motion due to a crossed-roller bearing instead of a large oil-film hydrodynamic bearing common on most other 4th axis units.

19mm center bore pass-through for long bar stock means no need to cut stock into small pieces when doing a production run of many parts.

The motor is mounted directly in-line with the axis of rotation instead of off to the side, providing an extremely compact footprint.

tormach.com

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