operation cnc

[kingcreaky]

Right, whilst spending all morning on the bearingstation website buying HTD timing pulleys and belts ive decided to scratch the idea of having one stepper for both ballscrews on the X axis powered by a long belt idea. Instead have one stepper per ballscrew..... This is mainly because I cant buy a belt 2.8meters long but also because it restricts the work area and also, lets face it, im bound to get my dude caught in it at some point... :D
So belts and pulleys ordered... I hope to god my calculations are right...
For a start point, ive decided to kick off with all the pulleys the same...

ive gone for 8 X HTD 5mm pitch,15mm belt width, 30 teeth. with a pilot bore
305M15PB - 5mm Pitch HTD Timing Pulley(Pilot Bore)

so; recalling my school days; 30 teeth x 5mm pitch / pi (47mm diameter)
therefore, 2 pi (r) or 47mm x 3.14 (squared) = 147mm (lets call it 150)

PHG295-5M-15	PHG295-5M-15 5M HTD Timing Belt	1	£4.46	£4.46
PHG490-5M-15	PHG490-5M-15 5M HTD Timing Belt	2	£6.30	£12.60
PHG365-5M-15	PHG365-5M-15 5M HTD Timing Belt	1	£4.90	£4.90

As my wallet is taking an absolute kicking again, I may aswell buy some of this CY cable stuff... Im contious im gonna need about 12 meters to cover all three axis's so can somebody confirm if this is the stuff I want?
Bear in mind my controllers the higher power ones...
1.5mm 4 Core SY Protected Cable Flex

[Jonathan]

The one you have linked to is SY, not CY. SY insn't shielded.

CY Cable - 4 Core 1.5mm2