Hey Brandon,
this was discussed here the other day when Onefinity Support confirmed that drag chains are not supported (they didn’t say “not recommended”, but “not supported”) because they could “introduce bug creating EMI”).
We came to the conclusion that introducing EMI problems might be the case if someone came up with the idea of dragging the unshielded power cable of a trim router into a drag chain, possibly along with the unshielded stepper cables the Onefinity comes with.
Problems may always arise when power-carrying or noise-prone conductors are laid close by and parallel to other cables. Dragging cables close by and parallel to other cables is obviously the case in drag chains. Tom @TMToronto stated:
…an opinion that I could only agree with.
I would use e.g. LAPP ÖLFLEX® CLASSIC FD 810 CY which is highly flexible, shielded, has double PVC inner and outer sheath and is specially designed for use in Power Chains. I would use
- 4 × 2,5 mm² (3+PE) for a 2.2 kW spindle
- 3 × 1,5 mm² (2+PE) for a 750 W trim router at 115 Volts (which then sucks 6.5 A) and
- 4 × xx mm² according to stepper’s rated Amperes for the steppers.
Another manucturer is IGUS chainflex® cables.