The old belt was marked A-40 so to be on the safe side he bought a A-40-1/2. It
was way too tight so he got an A-41.


A-belts are 1-1/2" longer than their marked length.

RMA standards cover A-belts, as these are intended for multi-sheave operations.

Light duty belts (3L, 4L) aren't.

Incredible that Hardinge Bros designed my TM and TL for 3L belts.

Naturally, these have to be specially matched.