Re: [CAD_CAM_EDM_DRO] Re: Timing Belt Sizing

----- Original Message -----
From: Wally K <cnc4me@...>

>You can spend about $400.00 in sprockets
> and belts for 3 axis and have a marginal system that snaps belts or
> spend $450.00 and run for 20 years without a problem.
>
> Wally K.

Most of the CNC knee mills I've looked at had 3/4" series L belts. This
size seems to give long life. However, the rotational inertia of series L
sprockets can have a substantial effect on acceleration - much more so than
table and load masses. Smaller belt/sprocket systems are preferable in
terms of performance.

If belts are easy to change, I would lean toward smaller components. Belts
are cheap.

Doug