I have a Daewoo SMV 4020 That keeps breaking the spindle belt. We purchased this machine in the fall of 2005 new, and have replaced the belt in 8/07 and 12/08. It just broke again. There is only one manufacturer for this belt, it is a Goodyear W-800. It is a 12,000 RPM spindle, and we have only ever run aluminum on this machine. No spindle loads.
It is a wide timing belt, but instead of having straight grooves, they are VEE shaped and the belt only fits in one way.
Anyone else having belt breakage problems?