Logan Multiple Disc Clutches and Brakes Simple, Compact, High Torque Design Logan Fluid or Air actuated clutches, brakes, and clutch-brake combinations are used ina wide variety of Machine Tool, Industrial, Marine, Municipal, Mining and Off-Highway applications. Our attention to quality and service, along with the ability to modify stan-dard units to meet specific customer needs, has lead to the success and growth of Logan Clutch Corporation. The Standard Logan product line is described in this catalog. It consists of three series of clutches and brakes with design features that are beneficial to their installation, operation and maintenance. Each series has model sizes with friction discs ranging in diameter from 2.5 inches (64 mm) to 8 inches (203 mm). All models can be furnished with standard lug or gear toothed friction discs.