Originally Posted by Joe G. (Post 1409750)

Curious -- has anyone in this thread experimented with belt pitches other than 5mm? A quick look at the gates datasheet suggests that a 22t (minimum size) 8mm pitch sprocket with a 12mm wide belt will have slightly more carrying capacity than a 15mm wide 5mm pitch belt with a similar sprocket diameter, and significantly more than the equivalent 9mm wide belt. I'm always trying to squeeze some extra width out of drive designs, but have heard just enough 9mm belt horror stories to discourage me from pursuing them.

Originally Posted by AustinSchuh (Post 1409803)

5mm is the biggest that is still really easy to source. We've never had a good enough reason to be worth the procurement challenge.

Originally Posted by asid61 (Post 1409847)

You can get 0.375" (9.52mm) from SDP-SI, although if they're out of stock you're out of luck. The decision would have to be made very early on.

Originally Posted by Travis Schuh (Post 1409872)

The .375 profile is a L profile, not GT2 or GT3. This is a trapezoidal profile, so its load rating is significantly less than even HTD for a similar size. (L stands for Light, while HTD stands for High Torque Drive). The strength of this profile is very likely less than 9mm wide 5mm HTD. The reason you would use a trapezoidal profile is if you have small loads but need minimal backlash, as it will perform better than a HTD or GT2 profile.