PEP Motor has published the product catalog for linear and rotary stepper motors. It covers hybrid screw, ball screw, fixed shaft, hollow shaft and rotary series, with frame sizes from 20 to 86.
The catalog includes lead-screw selection, outline drawings and motor specifications. Download it from the products page, or contact info@pepmotor.com for a recommendation.
Additional product catalogs will be added to the website as they are released.