Re: [CAD_CAM_EDM_DRO] Pulley Selection / Requirements for Servo System

a> I am retrofitting a bridgeport 9x42 clone and have 19lb-in servos. I
a> now need the pulleys and I want to be sure I get what I need.

a> My assumptions:
a> Belt width: greater than 3/4"
a> Pitch: Approx. 5mm.
a> 25 Teeth on Motor Pulley
a> 50 Teeth on Screw Pulley

a> What is a standard set up on a bridgeport?

Standard setup on a Bridgeport CNC is 12/24 ratio on X and Y and
13/26 on Z. All pulleys are steel and are taper lock. The belts are
"H" series trapezoidal, 1/2 inch pitch and are 1 inch wide

a> Does it matter what material the pulleys are made of? I have seen
a> Aluminum and multiple steel types.

a> Will two set screws be good enough or should I use a taper lock
a> bushing type?

--
Best regards,
Larry mailto:lvanduyn@...