A new CD-ROM from Quality Transmission Components (QTC) features their 528-page metric gear catalog Q420 and eStore Interactive links to over 3,700 products. With the CD-ROM you can order online, request a quote, download 3D CAD models, check stock plus view product specifications and technical pages.

The CD-ROM, identified as Q422, contains a comprehensive technical reference section entitled "Elements of Gear Technology". The topics covered include the principles of involute gearing, gear dimension calculations, the definition of backlash, plastic gear design, elements of gear accuracy, principles of surface contact, methods of lubrication and methods for noise reduction.

The product section on the CD-ROM includes detailed specifications of the complete offering of off-the-shelf Spur gears, Helical gears, Screw gears, Ratchets & Pawls, Gear couplings, Worms & Worm Wheels (Standard & Duplex), Ring gears (Internal & External), Involute splines (Internal & External) , Racks (Straight, Helical & Flexible), Miter gears (Straight & Spiral) and Bevel gears (Straight & Spiral). These 3,700+ products are offered in sizes from module 0.5 thru module 10, in materials that include alloy steel, carbon steel, stainless steel, cast iron, aluminum bronze, brass, cast iron, nylon, and acetal.